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It's mostly all about heat. If less heat is produced and more the heat is spread out, the battery doesn't suffer as much from charging and doesn't wear as much. I don't know what is the exact sweet temperature to achieve 80+ watt charging at, with the least possible wear, but it is hard to maintain as the battery wants to warm up as it charges.Good to also mention that the battery degradation isn't linear to the charge cycles, but it starts off with a large wear amount per charge when it's new, heading to a more mild wear amount. For example, the first 150 charge cycles (lets say degradation from 100% to 97%) could degrade your battery as much as the next 300 cycles would (from 97% degradation to only 94%, instead of 91%).
@NihaL NaiK That's not true. I remember when my phone came out they were saying the same thing well here I am with the same phone 3 years later and nothing. My HUAWEI P30 pro has 45w charging iv had it for 3 years and have not noticed the slightest of degradation. What I also like about the P30 pro is that in battery setting you have options to reduce harm to the battery like "smart charge" which learns charging routine and delay from charging past 80% untill i need it. It also has "smart battery capacity" option when enabled the battery will finish charging just short of its actual peak capacity which will reduce how long single charges last but will extend the batteries life span.
@Dikshit pratim Mahanta Ironically Whatsapp has huge battery drain, or has had battery drain issues 🤣
@Dikshit pratim Mahanta Using phone a lot means you drain the battery a lot lol. I mean, how do you think battery mostly drains? When your phone is in use.
@Michael Skelton well it's not the case in all phones!!!
@NihaL NaiK charging to 100% and then staying at 100% for long periods (regardless of if the charger is still connected) does cause extra wear on the battery. It's the main reason a new phone has somewhere around 40-60% battery when you first take it out of the box and also the reason why allot of phones are now coming with delayed charging software (they may charge to 80% and then just before your alarm goes off they switch back on to get to the full 100%)
I really just want a smart phone with a replaceable battery. Like a panel on the back I can pop off and pull the batter out rather than having to fully disassemble the phone.
@Alfred M that is fine. I don't put my phone in water
@CaptainMisery86 you can not have waterproof phones if it can be taken apart
but then it will not be waterproof
So you want an antique phone?
Fairphone allows you to do this easily, as well as easily change out other components that might break, such as camera, charge port, microphone etc. The trade off is a more expensive phone for lower specs, but it's the most ethical phone on the market today. Samsung's Xcover series also has a swappable battery, with the most recent one having better specifications than Fairphones.
Okay, I understand the point of reducing the charging time from to 2 hours to like 20 minutes. But is it really reasonable to minimize it even farther? Seems like there is not much difference for the average user whether it charges in 7 or 15 minutes. It could be useful for big batteries, like in electric vehicles, where charging time is still a big factor, but in phones it looks like it becomes just a marketing tool, just like megapixels in phone cameras back in the day.
@Dislike might as well say, I want infinite battery life 😊
I'd like my phone charged within 1 sec.
@Hetzerogeneous I agree with you. They need to strike a balance on safety, efficiency, reliability and of course cost.
@Theodore Crunchz Assuming car charging technology can become much faster, it is theoretically possible to charge a phone in seconds, but personally as a consumer, a charger that makes charging much easier is a much more compelling option than a charger that is ultra fast. like magSafe.
Agree charging time not so critical for a phone, once it’s pretty quick - but for a car, charging time is really important and in principle it’s identical (just a lot bigger)
Nice break downs. You explain tech quite well. Glad I found your channel.
You just now found his channel?!!
@Man of war You have heard of Camouflage? I know I’m silly.
Obama in Alabama lol 😂
Lik seriously I watch this channel all day now never knew I was into tech
I'd certainly take a thicker phone if it meant improved durability, sd card slot, and room for a larger, and/or user swapable battery.
@Pavel Peřina triied lol 😂
@Theodore Crunchz good old days
@Stephen Snell which sucks, as consumers we should keep pushing for change
And a headphone jack.
The Samsung XCover says hi! Easily removable 4000mAh battery packs but with modern features :>
You're becoming more of a truth seeker and journalist than before, you're adding a lot of value as you evolve beyond just reviewing tech to actually help us understand how it works. Thank you Marques.
In 240w with gallium nitride it should give a max of 5w so that's not too much heat is like some gaming only the people don't should touch the cellphone when is charging.
@Tamron you’re missing the point he is talking about the chargers that are advertised by the companies and come in the box with the phone
This has surpassed journalism, it's kind of engineering research paper level, good job Marques
agreed 100%. I never watched marques when he focused on reviewing tech. I'm the kind of person that will keep my phone until it becomes unbearable to use. I find myself watching just about all his videos now that he's getting into investigative tech journalism. He has a way of asking every question that I would ask and answers them succinctly and definitively.
This is something all people need to strive for.
You're just upgrading in every single video. Keep rocking ❤️.
I do wonder if wireless charging is hurting the battery as it does get very warm.
I would guess it does. I don't use wireless charging partly for that reason and prefer a cord to charge. I also don't know if my Otterbox Defender case but either way I don't use wireless charging
When your phone indicates 100% charged, is it physically at 100%? To prolong the battery life, electric vehicle batteries-while displaying 100%-are actually at 80% or so. Similarly, if the battery indicates 0%, it is actually at 20% or so. This is done because (as you stated) Li-Ion batteries do not like being fully charged or fully empty. Is this true with smartphones?
Not really. There is a small buffer, mostly at the bottom towards 0, because real zero is a dead battery that can't be charged again plus there's self discharge over time.But: Adding this buffer costs extra physical battery. Thus also - more importantly - space and weight. So the buffer will be used sparsely.Phones are quickly sold an reviewed mostly new, not after 5 years. So there are too little incentives to keep the battery healthy for long.
There is no such thing as physically 100% charged battery. The cells degrade the slowest around their nominal voltage (~3.7V), _anything_ bellow or above that will make them degrade faster. Now, the relationship between voltage and degradation rate is non-linear, that is to say, going from, say 4V to 4.3V will accelerate degradation more than going from from 3.7V to 4V will, even though the difference is 0.3V in both cases (and pushing it all the way to 4.6V would pretty much be murder for the cell). The industry standard* of 4.2V=100% sits right before the degradation really starts taking off, so it was chosen as a reasonable compromise between capacity and cell lifetime, but if you need higher capacity and don't care about cell life, there's nothing stopping you from deciding that 100%=4.3V. Or if you have enough capacity, but want to extend the lifetime of the product, you can say that 100%=4V. Same goes for 0%. *I say standard, but while _most_ devices use 4.2V charge termination, I've seen everything from 4.1V to 4.35V over the years. And the range for “0%” is even wider - I've seen everything from 2.3V to 3V.
Man I miss the days of user swappable batteries. You never had to worry about running out of juice. You just carried extra batteries with you and in just a few seconds you were back to 100%.
@L Gray Power Banks aren't the same as you need to charge them independently and also you actually need to charge your phone through the PB and at a slower rate than connected to the wall. Swapping batteries is a whole another story you pass from 0% to 100% in seconds.
@Screaming roomba it should exist, just not as a primary method of charging until it gets better
@Yamaha Rider JNo they didn’t - you’re obviously quite young and never owned one of those before. They’d barely get through an 8 hour work day if you did anything but let them sit with wifi and bluetooth turned off and lived where there was exceptional cellular signal.Removable batteries have less capacity than built in batteries, which is one of the reasons they quit using them. They also made the phones SIGNIFICANTLY more fragile, and the cases would break in 1-2 years so even if you wanted to keep your phone and not upgrade every year or two, you’d still have to replace it because the back would constantly fall off and the battery would fall out. And forget about dropping them - they’d always explode into 3+ pieces with phone, case back, and battery (and sometimes SIM card) going flying across the ground in different directions. And there was no such thing as waterproof, so if you even splashed your phone or used it in the rain, if you ever had problems with it and took it in to be fixed or replaced, they’d point to the moisture detecting stickers inside and tell you “sorry, it’s got water damage, you’re going to have to buy a new one - the warranty won’t cover that.”So yeah, people look back on those days with nostalgia, but they’re forgetting about the actual reality of having those batteries in phones back then. I’ve owned them and used them, and _no thank you!_
@Alex Christensen yeah but wireless charging shouldn't exist, its not as efficient as wired charging and it's not even that good, it's the same as just having a power bank conectet to it and it's more efficient and can have more capacitive and a faster charge time
And I remember first time hearing the concept of portable charging for those phones like nokia hahaha you plug into something and the way it power up is by you spinning the small wheel in it to generate power
Looking at the charging curve at 5:57, I think you just lit that battery on fire. Slowly tapering down from 10 watts only after the battery has already hit 100%? Oof, hardcore.
I had Xperia Z1 compact. Battery has down after exactly 3 years. Battery was replaced but I have bought XZ1 compact. So, in spring'23 it will be 5 years old. Still standing, feels good. I sure because smart mode holds 90% battery all night long and takes last 10% just before my awakening. Great technology!
If phone batteries could last a whole day (meaning people stop complaining about phones being thicker so companies can install bigger batteries) we wouldn't need fast charging
@Simon Marcu imagine the potential of an S22 ultra with a 10,000mah of bigger battery
I have a 6000 mAh battery and it lasts a least half a day at the biggest power consumption on an fps game. By just watching videos or scrolling through social media, it lasts more than enough, about 12 hours or more. The procesor is not that power full and with that big of a battery, it's hard to drain it.
@danullb the Oukitel WP19 is even better, same durability, same CPU as the Ulefone, but the battery is even bigger than the Ulefone, I have both, and the Oukitel WP19 is amazing, 3 days of battery life (when I had an S22 ultra, the battery would need to be charged twice a day on average)
@MWB Gaming exactly. I've never used one, but it seems that would be a phone I'd LOVE. Durable build + battery
@danullb compare the battery life and durability of a Ulefone power armor 13 and a Samsung S22The Ulefone is the better phone, the battery lasts 2 days on a single charge, and the phone won't break if you drop it
This is interesting and very important info to me since I usually keep the same phone for 5 - 7 years, but I don't see the usefulness of this information for the rest of the audience who probably buy a new phone every year or so. If I lived in a developed country, I too would probably never worry about that sort of thing.
@Karak Dalík People can also upgrade once every 2-3 years, meaning the drop in battery health doesn't affect them as much since they should still have around about 80% battery capacity by the time they trade in their old phone.
@Karak Dalík Don't forget the whatever-android-smartphone fanboys kid.
That's a pretty wide asumption. Phones are not cheap, especially the good ones, even in "developed countries".Only sort of people I can imagine buing a new phone each year are phone rewiewers, spoiled brats and Apple fanboys (there migth be a large overlap between the last two).
I hope the battery will be changeable as in the old times! I really hope US and EU will force the phone companies to implement a battery which is easy to change for a normal human! I am stoked that this isn't here yet !
Removable/user-replaceable batteries have several problems that are why they aren’t used anymore.1. phones are more fragile2. batteries have less capacity or are larger and heavier3. larger/heavier batteries build up more heat and don’t last as long4. you can’t have waterproof phones with those batteries5. if you’re carrying an extra battery with you, you’re carrying a battery that’s usually charged to 100% and then sits there not being used for extended periods of time which is bad for them and causes them to die prematurely6. they’re more expensive7. phones have to be biggerThose are just the reasons off the top of my head, but I know there are a few others too.
If enough people agreed with you, the companies would do so. Perhaps having the government force the market to take arguably bad and unpopular steps is not a great idea.
@Alex Clipper yeah, it’s better sells the insulin like gold 😂
You hope the governments will force stuff on people/businesses? Way to go man.
Thank you Sir, super informative!!
As a retired engineer who specialized in battery technology, I'm here to say you've done a perfect job explaining battery charging.
Personally I wish they didn't focus on this so much. I am fine with charging overnight as long as the phone lasts a full day. So 6 hour charge is perfect
Very interesting. Galaxy fond 3 has divided battery indeed, and heat disipation. I was wondering why.
Very educational video thanks man!! 🤙
Regular charging is enough for me, I have 8 hours every night to change it
Thanks for the unbiased info,great !
I used my 66-watt charger only once, and my battery dropped 3% in just one day. Now I know that the heat generated by too much current made my phone's battery health drop.
Maybe wrong cable?
Nokia brick is better than your phone
Lmao shitty phone. I've had 67w fast charging on a phone for 22 months and the battery health is still at 87% with heavy ass usage and 550+ apps with 40+ pages of widgets lmao
i use a samsung galaxy s4, still using the original battery it came with over 9 years ago. i never go below 10% charge, and i rarely charge past 90%, i use a custom made 2w slow charger. i regularly get 2-3 days out of a single charge. ive also been keeping track of how many W-hr go into the battery, when new it was aprox 10wh, as of last week its aprox 7wh. so this means my battery still has 70% of it original capacity after 10 years.my wife bought the same S4 phone as me 9 years ago, her battery only lasted 3 years, cuz she fast charged and charged to full, and drain below 10% all the time. shes had 3 phones in 10 years,ive had 1.
I believe this more than the manufacturer claim
Insane that you had a phone for 9 years and still using it. I had a malfunction galaxy S4. Only lasted for 5 years. :P
Haha you win, get a new phone my gawd.. I suggest a refurbished s20 ultra or note 10 or 20 ultra/plus.
@Piero Its called accubattery android only I`m afraid.
@Matthew N what app is that?
We need megawatts charger. So we can charge mobile in negetive minutes 🤔 😏 time travel charger 🙄
Am i right if i plug the charger whenever between 20-80% ? No need to go to 0% every months or some stuff like that?
Lithium rechargables are not susceptible to the "memory effect" of NiCd cells, and do not respond well to being completely drained.
I wanna know your opinion about the protect battery feature in samsung phones , is it useful ?
software can also help with that. Maybe lower performance while charging or stop some background tasks that aren’t needed all the time.
@Someone who takes everything too literally ■ wait i forgot to read your last sentence haha.
@Someone who takes everything too literally ■ im talking about while charging. Energy safer is something you turn on to keep the battery alive longer.
That's what the battery saver feature is for. You can turn it on while charging
*thanks for watching and commenting on my video**you have been selected among my lucky shortlisted winners message me now on TG to claim your prize* 🎁 🤝.
Only a new technology battery would be supporting fast charging without damage the battery, its a shame that they can't build capacitors with the wattage stored like a battery, they can handle fast charge good, without be damaged.
they can, and they are called super capacitors, but they are currently made in such low numbers that they are uneconomical at the moment. think of it like solar cells or superconductors. they start off pricing themselves out of the market, but a few applications use them, so they get better at making more of them cheaper, which brings the cost down and increases the places where it makes sense to use them, and repeat until they become mainstream (or not).
Those phones charging at 240 watts will be getting VERY hot!
Linus did some experimenting on this a while back, IIRC he found that it's less about how fast the battery is charged, and more about the range. Fully charging and discharging battery puts a lot of stress on it. Doing so repeatedly degrades the battery. Doing so repeatedly while also at high temperature, _really_ degrades the battery.
@Jan Klas you know what? Of all the dumb Clip-Share comment arguments I've read, at the very least this back and forth is smart and while I've learnt absolutely nothing due to not knowing who's right, now I'm interested in reading up on battery science
@Sang Lê Tấn I’m going to continue it!
This thread has been going on for way longer than it should been.
@r p No they do not, where did you get this nonsense from.Lithium batties do NOT significantly heat up during charging. It's simply not in its chemistry. What you feel heating up in your phone, is the charge circuit. NOT the battery.
@Jan Klas weird how every lithium battery is ever charged always gets hot when charging.
Lithium creates whisper thin hairs that grounds the two sides. That's what the degradation of your batter is. Lithium crystals growing in the electrolyte. Eventually reaching the other side and shorting the battery. Fact is you waste 40-60% of the energy used to charge by fast charging and wireless charging.
Most people get a new phone every other year. Fast charging at 45 watts won't be an issue at all. It's 2022 I've been charging my s20 ultra on a 45 watt and i go to bed with 25 percent every night. Two years and my capacity is still way more than I need. I stream music off Clip-Share 10 hours a day.
"Most people" Do not get a new phone every other year. If you really believe that you'd be the most delusional person I've ever met or you just know nothing of people outside your economic class. Most people either can't afford that or aren't stupid enough to waste their money like that.
@Filbao I use a Moto g60 with a 6000 mAh battery, I am a Power user, even use my phone daily for hotspot internet and high power demanding games. Capacity is at 5984/ 6000 after a year, and I always turbo charge with 45 watts. The phone has a smart protection and it drastically slows down the charge after 80% and it has smart over night charging. The phone is smart enough to keep the battery healthy even at high power demand and repeated daily charges.
Maybe u ain't a power user
Fast charging does more harm to the batteries. Especially when they say it’s good to charge right after you use it(power tool batteries).
"One of these incredibly nerdy cables" ... "I'll put a link for it in the description below"... props for knowing your audience. I think I might buy one.. 🤔
is wireless charging the best way to charge our phones?
No it is not the best way as that way of charging produces quite a large amountof heat and Smartphone batteries get harmed by too much heat⚠️
A lot of information here. Thanks. My takeaway from this is that the charger is part of the package, so using other chargers are probably not going to be as efficient. This video is pretty much in direct opposition to the charger ads claiming that the phone vendors are out to kill your phone.
What if you’re not supplied with a charger with your new phone purchase?
This video, which is basically journalism, is REALLY high quality. Please do more, you have the credibility and authority to seek information and explain it as divulgation. In my opinion, that's a great step up from your more common review videos, and a very strong competitive advantage for your channel. Keep up the excellent work, and quote some scientific publication too if you can: it really adds value to the technical parts and professionalism of your search. Very well done!
@Stranger Happened then make a video about it, I'll wait
*BAD journalism, POOR research.*Did not Google far beyond marketing pages of the companies that advertise those fast chargers. While in reality, there are actual scientific articles on the degradation of batteries and how they depend on the speed of charging. This is the reason why neither Apple nor Samsung nor Google are introducing 250 Watt chargers.
For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life. For God did not send his Son into the world to condemn the world, but to save the world through him. John 3:16 and 17.
I mean he just read what the manufacturer says themselves. It's not really that in depth he just has some good narration.
Hi Marq I just want to ask can I use a 25w type-C Adapter to charge my IPhone 11 up to 14 Pro Max with no hesitation or no problems
Very informative video, I learned somthing new today. Thanks MKBHD
🔝🔝🔝🔝 Thanks for the feedback,Expect more videos very soonSend a directly messageI have something for you....
This may be suprise or not, but I have a Nokia bluetooth dongle, it is at least 12 years old, I have been using it 5 days a week and recharging it every night for 12 years+ it has a Lithium ion battery, I firmly believe the batteries can be and some were designed to last much longer than what the companys are producing now, fast or slow charge either way.
@danullb I will get back to you, it's in a box atm.
Very interesting. I've noticed the same sort of thing with certain batteries. Only tangentially related... Regardless of what Apple or various tech Clip-Sharers say on the subject, I've switched to slow charging. It all started when I used a MacBook Air 35W charger for my MBPro (which ships with a 120). I couldn't find the Pro charger for a couple weeks. Well, that was a happy thing that happened as it turns out... Not only has this helped immensely with battery health, the quality of each individual charge is noticeably better (lasts roughly 10-12% longer on a single charge). It was the latter of these two effects that I noticed first, and had prompted me to make a switch in how I juice up my gadgets. Batteries are less like a sponge (the analogy used in this video) and more like a game of Tetris. The slower the gameplay (slow charge), the more efficiently those charged particles can puzzle themselves and stack. There are journal papers on the subject, and my own experience now has me using LOW wattage chargers on all my devices, whenever I can get away with it. I'm rambling, sorry. Your comment REALLY got my attention. Interesting. I'm curious, what's the voltage & amperage that the dongle charges at? Should be marked in small script on the block.Cheers
Great discussion (as always), Marques, but the question I still have is, if I charge my OnePlus that came with an 80W charger, using an older, lower wattage charger, will that theoretically extend the battery's life (slow its decline)?
Fast charging does not shorten the battery life, heat is your enemy. FIY phone with high wattage charging example 25W wil reduce charge to about 10W as soon as you activated the screen, this is to reduce heat, notice your phone wil charge much longer if u use it while it charges.
Your channel is quickly becoming one of my most trusted and on-point resources. Masterclass in presentation too.
What I would like to see is a smart charger that knows how to charge your battery to the optimal level to ensure maximum longevity regardless of your charging habits.
What I’ve noticed when I use a 5w vs a larger charger is the battery seems to last longer on a slow charge. It feels like a slow charge packs more into the battery.
i didnt even bother unpacking the 10w one and i still using the previous phone 5w charger, even for the tablet with 7000mha battery
Hmm interesting 🤔
Yup! Have also noticed this and I was wondering the same 🤔
I noticed this too! I wonder how that actually works and if it makes sense
If they know this about batteries they should not be gluing them into chassis. They do this so that most phones will go to the shredder once the battery is dead.
Depends, excess glue is bad. No glue? Your phones about to turn into a flaming brick when it gets dropped and your battery bumps into a daughterboard and get's pierced. You certainly could get way with out gluing a battery if you had enough room to wall off & isolate the battery, but that's not feasible without physically stripping the phone of features or making them significantly larger.
Always did appreciate time and dedication your put into these tech videos. You’ve always been a very reliable source for all things tech related
What a fantastic presentation of electron flow, battery composition, and charging tech. Bravo Sir
Pixels can use a set alarm as a target for 100% charge. until the. the charge is slow and keep 80% until shortly before waking up.
I prefer battery health over fast charging. To me fast charging is a convenience but in the long run the battery health is what matters. It’s just rare for me to need a quick charge, I’ve only needed it a few times in my life
Solution. No heating plate, no glue, no pry tool, no risky disassembly of 1/2 phone's internals. A user removable battery. You easily replace it when it wears down. What an innovative idea - its like looking into the future - oh wait.
@Stephen Snell pfff. Yeah, freedom dangerous too. Better no education and monitor the peeps. I disagree. User replaceable battery is the pro consumer way. The current is of the corps. Planned obsolescence.
You realise sealed batteries are way better as it stops users from using uncertified batteries as uncertified batteries can be risky
Hey Marques! I worked in the battery industry for 7 1/2 years. I can tell you that if you are very worried about battery health, long term, use the slowest charger you can and don’t use your phone while charging. Charging solutions are improving but lithium batteries have not changed much. I use the 5 watt charger still on a timed plug overnight. My iPhone 13 Pro’s battery health is at 99% still, I have had it since launch. I actually tested this theory with my iPhone 12, I used the 20 watt charger instead and sometimes wireless charging, both of which cause more heat. I saw much more battery degradation in the same time period. I am super interested in what some of these companies have done the last several years and ultimately I think some developing technologies that are on the horizon will solve this issue entirely.Update: I think a lot of you missed that I prefaced my comment with “if you are very worried about battery health”. One more tip, if you have a device you plan on keeping for years and don’t always need the full battery life then you don’t need to charge it to 100%. For example, I have an iPad I use mostly at home. I will often charge it to 70% or 80% then stop. I usually only charge it 100% when I am taking it on the road with me. Follow these steps and you can expect your device to have 95-100% battery health for a much longer time since much of heat and battery degradation occurs at the end of the charge in that 90-100% range.
I also prefer the slow 5w original charger. And my phone battery health on my 13 Mini is still 100%
If you plan to keep a device for +3 years you should just replace the battery with a new one, it's not that expensive. No need to baby your phone when after 2 years the battery will start to degrade regardless due to charge cycles
@Aquarius caesar : I prefer slow charging (which I mentioned at the end of my previous comment). So I paid no attention to the fast charging feature when I shopped for magnetic tip cables. I don't recall whether the cables I chose support fast charging. The cables I chose support data transfer. But I normally use wifi for data transfer between my phone and my pc, using a free open source android file browser app that includes a Samba client, and a ”shared folder” on the Windows pc. The app also lets me open files stored in the pc's shared folder using apps on the phone, for example to stream video files stored on the pc to play on the phone using an android player app (for example VLC for Android). If you normally use an ordinary cable, wifi transfer will reduce the wear on the phone's charging port.
@Brother Mine In my history of using smart phones, I never get the issue of failed charging port so far. It's interesting to me.
@Brother Mine Magnetic charging is good but the problem is you need to use high quality products which support fast charging and data transfer at the same time. Cheap magnetic charging things are bad basically. I've used it before. It's convenient but cheap ones charge very slowly and inconsistently. Magnetic tips get hot easily while charging which may damage the battery? What I've known so far is all of the cheap magnetic charging cables in my country are from China and they don't support fast charging and data transfer. If you live in developed countries where better quality of magnetic charging cables are available, you should use it. Otherwise I don't recommend it. You can get only convenience for one handed use to disconnect the cable but you have to give up fast charging and data transfer.
Another issue with high wattage charging is any bottlenecks along the way. Things like the connector, solder joints, traces, etc. My first fast charging compatible phone was a Cat S61, which has developed a reputation for failing charge circuitry. When charged at high wattage, after usually less than six months they stop charging. This is especially bad because there is no Qi receiver so you only have the plug in charging. After my first one died, I only used a low watt charger and didn't have any more issues with that.
Well I have an S22 Ultra and always have the Protect Battery option activated, which does not allow it to charge over 85%. I'm also mindful to never let it hit 0% either. About 2 months in with it now. So far, so good.
Love how informative this channel is. I learn a lot from all videos. 😊
Why would a company want to ruin your phone's battery? Hmmm.... 🥲
I just came to see some stats on how fast a phone can be charged, but this was really interesting and I loved every second of all the science behind it all 👍
Love your channel. I mostly watch it when I'm about to buy some new tech, then I wind up going down a rabbit hole of related videos, just cause I like watching them... Btw, just traded in my 2-yr old 12 Pro Max which said its battery was at 88%. However, shortly before trading it in, I began getting a lot more overheating warnings, which I never used to get. This was usually when on its wireless charger (Quadlock) on my dash (which I know isn't a good place). I need to relocate out of the sun. Question/myth you might want to do an episode on: Do phone cases allow phones to get hotter, but acting as an insulator, rather than a bare phone being able to dissipate its heat?
Very interesting video, absolutely applicable current topic. It'd be cool to know what actual industry certifications for battery health exist though. Additionally, while its awesome the fast charging doesn't really damage phones, I would have loved to know if charging slower has a parallel to battery life, or if its nonlinear/doesn't.
its pretty self explanatory. I used a 10w apple charger on my 11pro for a year. my battery stayed at 99% that entire time. By the second full year I was at 97%. 5w and 10w uses less heat while charging because our phones are capable of taking in higher watts amount. It's pretty cool actually to think of it.
I really appreciate this in- depth review regarding charging 😊 I generally use super fast charging on my S22 Ultra for short periods at home or when I need a quick charge before heading to an event. Regular fast charging is fine for me when I'm just at home. When I've been using my phone a lot watching or making videos, etc and it starts to run hot, I just shut the phone down and let it recuperate before I use it again.
Another thing I've heard is that when you recharge, you're having to apply energy to the ions to move them back across the electrolyte (which, as he mentioned, does degrade with each pass of the ions). Higher power basically puts more energy into this process, causing then to degrade the electrolyte more. This is jist what I understood, I could be wrong or misled
Why do people care so much about fast charging? If it lasts a day it doesn't matter anyway.
Letting your dog phone go to 0% is just as bad
80% is the iPhone standard. It seems you have been talking to the iPhone people.
my Leaf needs 24 hours, my phone needs 30 mins...
A much needed breakdown. Thanks for busting some of the misconceptions about fast charging...
I just had a phone with super fast charging feature and I noticed that the charger gets super hot and it concerns me so I changed the cable and it changed to only warm to touch but still charge quite fast but not as fast as the stock cable, I am fine with it and stick with that setup
I am confused about one thing. Based on the calculation standard if you were to find out the maximum capacity of a four year old phone originally rated at 4000mah for example, would it be 4000-40% = 2400mah or would it be 4000-20% = 3200mah-20% = 2560mah grand total? 🤔 A little off topic but does anyone know how long it will take for the battery on a device that's never been outside the box to start to degrade? Not sure if I worded it correctly but I hope so
An actual test of this would be fun. Charge a few different phones at different wattages over 100 cycles, measure heat during charge, and measure capacity at the end.
@layzy24 can you give me an example of a Clip-Sharer to watch??
Cycle mean full charging _all discharge 100_0....most of all batteries have protection circuit to interrupt current when go below voltage(because creat dentritis mean surface of positive and negative gap became too small and drain battery or short circuits inside battery)....so it's save battery life most of batteries varies 500 2000 cycle....
that would be pretty difficult because no battery are exactly alike. example: batteries rated at 4000mah, some might have 4000 some 4100, some 4200. that's why some iPhone stay at 100% capacity even after months of use because their battery have higher true capacity.
GSMArena did that actual test
Then you do it since it's "fun".
Another solution is, use "slow" chargers and keep the battery charge levels between 20 and 80%. Only use (super) fast charging when you really need it. I use my fast charger for travelling only, which is when I normally need fast charging and the rest of the time, just use the 20-80 rule :)
the ideal thing would be to long run test 2 identical phones in a controlled enviroment for charging/discharging, one with fast charge and the other one with a slow one, and see what come out as a result...
I've noticed that the newer phones and tablets don't get as not as those back ten years ago. An Android 4.1 tablet got almost hot enough to give a first degree burn especially right over the battery. The newer phones and tablets heat up a lot less.
Nice breakdown of what I understood intuitively. I never thought fast charging is a problem because indeed it's always only the first minutes when it's real fast and it doesn't do that long enough to heat up much
Your videos are always so interesting. You are at the top of your game sir, keep it up, we are loving it.
I have a lot of older devices with slow charging (even a 12 yo laptop and a10 yo smartphone), in which you hardly notice any significant battery degradation.However after 1-2 years, my more recent devices (not only smartphones) with faster charging have a significant loss of battery capacity.I now have a pixel 6a, ad use a charger with a capacity of 15W (it takes some time, but it never gets warm, I also try to avoid charging percentages above 90-95%).
It would be amazing if you could do a follow up on wireless charging and if it's bad for the battery! Thanks for the amazing work!
Wow dude your content is really amazing. This video was so well thought out and informative, I always look for your videos first on anything tech related.
I've got to find the paper, but i remember tests being done that looked at the relationship between battery health/capacity and charging speeds. The sweet spot was 30-35 watts where your battery doesn't degrade your battery more than 15w. Anymore than that, you're not just damaging your battery, you're damaging everything with that run away thermal energy if you use the phone while charging.
Very well researched. One of the most trustworthy YT channels ❤️
Mil gracias Marques. Esta informacion me ayudo mucho porque no tenia la menor idea como trabajan las baterias y porque siguen cambiando la technologia. Saludos!
What I do with my Mac and IPhone to preserve battery health is to only charge up to 80% and try not to let it get under 20%. The battery life and efficiency on devices now is pretty great, especially since I'm not much of a power user so I can easily end my day on 40%. I feel completely comfortable leaving for work with only 80% and doing that every day longer preserves the life of the battery. Like mentioned in the video, batteries don't like being at 0% or 100%. So the closer you keep the battery to 50% the better.
I charge to 100% each night and it takes a good 4 years for me to notice a lot of degradation
same. my pixel 3a has had 1800 charges and is still at 76% health because of this rule
I can’t even begin to tell you how much I appreciate everything you bring to the table, Marques. I’ve been a subscriber and follower since your early college days and you really are one of the true greats in the space. Theres no doubt about it. Thank you for these wonderfully made, informational videos. Never a disappointment.
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Very useful video, helping to answer questions that many of us have, but don't know where to go for the answers. Thank you! 😄
Very interesting video!! One thing I have noticed when charging my S20 Ultra via the super fast wire charger is that the charge diminishes quicker than if I charged wirelessly (at a slower rate of course.) So idk what it is and why it does that, but if I charge wirelessly to full the battery will last longer than if I charged to 100% using the super fast wired charger (I think the Samsung standard is 45W?)
S20 ultra is 25w
Engineer with professional battery experience here: High cell voltage damages cells. Fast charging below 4.2V does hardly any damage at all, if the battery stays cool. That does not really depend on the power. If your battery has low resistance, you can pump a lot of current through there. Go over a certain voltage threshold 4.3V, 4.35V... and you can kill it very quickly... Many fast chargers go closer to that limit than what would be good in my opinion. But marketing calls for it...
So here's a question I have @MKBHD - Does turning on the 85% max charging on an Android actually worth it?
Great video. I charge my phone on an old 5V 1A charger overnight to increase cycle life. There is probably some app that does it or something built in to the OS on some phones now but if you limit the current your phone can take whilst charging it can't fast charge. Fast charge when you really beed it and don't do it often and you won't lose too much capacity over time. Even if you upgrade your phone every year its a noticeable drop in capacity toward the end of the year.
In my experience, I got longer battery life per day if I charge overnight with a slower (0.8A) charger. Charging slow overnight is the only smart thing to do if you charge that way. If I need the phone charged quickly I use the original charger which is I think 60W, but that is rare. My 6.6-year-old phone still have battery in good shape after 4.5 year everyday use, now is used only as backup phone for driving drone, traveling etc... My suggestion is to charge phone overnight always with slow charger except when you really need it full in short time, and you will sleep much longer than 1.5hours of fast charging time.
Overall I think this was a great video! One critique though:Splitting the cell into two pieces does not decrease the heat you get from charging the cells. It reduces the heat created in the charging circuitry.Think about what would happen if you, say, split a Tesla battery pack into two pieces, and charged each half with 100kw instead of charging the whole pack with 200kw. Each individual cell is still getting the same amount of power, and so is the whole pack, all you did was take up more space.The reason they have started doing this in phones is to reduce the complexity and heat output of the phones internal charging circuitry. By splitting the pack into two pieces and adding a few MOSFETs, you are able to change the two cells configuration between series (8.4v nominal) and parallel (4.2v nominal), where the series configuration is used to reduce the difference in voltage between the charger (20v) and the battery (conventionally 4.2v nominal, with the new configuration 8.4v nominal). The greater the difference between the charger and the battery, the more heat the conversion circuitry generates to maintain the difference, and heat is bad.Hopefully my explanation makes sense and helps, I am not always great at explaining things : P
i always feel like am watching a high production movie at 4k everytime marques uploads. The spatial sounds, detail to color scheme just amazing! And yes i don't think there's another youtube channel that feels this way. No idea what you do behind the scenes but keep it up!
@Shahan 484 lol how do they do it? I know Indians are famous for steam account botting and selling. I'd love to chat with you on this.
@Xavier Bro we all know you have more than one. We like it. Don't hide it.
@Shahan 484 makes sense.
If you really want your phone to last charge to 95% instead of 100.. fast charge till your hearts content
Wasting 5% is stupidSmartphones are made to be 100% charged
I would say for modern devices like smartphones, laptops, cameras, etc, you're OK to fast charge them. However, I still think there may be a valid concern for things like rechargable batteries (like rechargable AA/AAA batteries, etc) as the batteries themselves maybe have less components to control the rate of charge and I think those will suffer more over time from consistent fast charging, but devices with built-in Li-Ion batteries I don't think it matters as much. But as with all batteries, they do start to lose their ability to hold a charge after a while and have a finite number of charge cycles (regardless of how its charged) before the battery simply won't hold a charge.
I really really appreciate this kind of content from you! Thank you!Now I feel good about my iPhone 11's battery health at 82% after 3 years time!
My iPhone SE2 is 83% battery health after 2 years .
This is surely one of the best explanatory videos regarding battery health! Thank you for your research.Upwards and Onwards 🎉
It would be interesting to make wireless charging more effective by have a charging pad that measures the temp of your phone and can cool both itself and the phone to reduce the heat created by the coils
@I M wireless charging coil will wear before the charging port. Plus charging ports are easily repaired
@ritwik tiwary it can be useful if the charging port stops working, which has happened to me on multiple devices if you keep them long enough.
@ritwik tiwary I agree. People can be stupid and eat anything what is offered to them. But I studied engineering. And I learned that any innovations and alternatives, whether it may be stupid or not is still plausible.And at the end, I can see why people wanted that wireless charging. Hell I wanted that air charging so bad even if it's inefficient in terms of energy consumption. We just can't make it work as a thesis since it requires a lot of previous research and demands money for it to be tested whether it will be cost/effective (which technically speaking is impossible). But it is still fun to poke things at innovations like that, even if it's just for a bit.What I'm saying is if people don't want it then there's a lot of phone alternatives that doesn't offer that. There's too many smartphone companies that you can literally choose anything.
@SpaceGI if lot’s of people want wireless charging, I say all of them are stupid. I believe wireless charging was created by phone manufacturers to be portrayed as a super premium feature to stand out. I don’t think this was due to the demand of customers
Solid state is the solution
Mines at 98% had my 13pro max iPhone for 8 months
I can only tell my experience on my S6 Edge. 2A charging. Bought used almost 5 years ago battery is still going strong. I've read long ago that modern lithium ions should be charged when it drops to 40% and top up until 99%. Solution: download a simple battery alarm on android. It alerts you when battery reaches set threshold.