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First off this isn't a guide about how to make your battery last longer between charges, at least it isn't yet. If a demand arises I will happily facilitate. *EDIT* For simplicity's sake I am including a link to V7's battery guide which addresses increasing the time between charges. ✭[GUIDE][26-07-2016]Extreme Battery Life Thread(Greenify+Amplify+Power Nap)✭This guide is about reducing wear that happens from many thing we all either knowingly do; out of a possible misunderstanding, or ignorance. All of this information is available doing a simple Google search, I am posting it here though for those who otherwise would not think to Google it. Furthermore I claim credit for absolutely none of this, but I do hope you find it helpful.
HOW TO PROLONG YOUR Li-Ion BATTERY'S LIFE
1) Keep your battery at room temperature: Heat is the worst enemy of your cell phones battery. So keeping your battery at room temperature (65-75*F) is the first step towards prolonging your battery's life. According to Battery University
each 8°C (15°F) rise in temperature cuts the life of a sealed lead acid battery in half.
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They also go on further adding
Once the battery is damaged by heat, the capacity cannot be restored.
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There are many things you can do to keep your battery cooler, such as taking it off the charger when the phone is done charging, and avoiding prolonged continuous usage. Also avoid leaving your phone in your car, it gets upwards of 140* in a car during the summer. The worst thing that can happen to a Li-Ion battery is a full charge and high heat, so avoid charging your phone until your car has cooled off if you are charging your battery in the car. Heat is by far the greatest factor when it comes to reducing the lifespan of a Li-Ion battery.
2) Use partial-discharge cycles: According to lancair.net
Using only 20% or 30% of the battery capacity before recharging will extend cycle life considerably
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Other sites I read while researching this stated that users should use up to 80% of their energy before recharging, they were all consistent with regards to a few things including: avoiding full discharges will prolong battery life, and it takes several partial charges to use one full charge cycle. Additionally Li-Ion batteries do not have "charge memory", but your digital device most likely does. Discharging the battery until cut off after every 30 charge cycles re calibrates the devices gauge.
3) Avoid keeping your battery at 100%: Every source I referenced for this guide said the same thing about keeping your battery at a full capacity, but oranageinks.com explains it most simply by stating
Permanent capacity loss is greatest at elevated temperatures with the battery voltage maintained at maximum (fully charged).
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4) If you are going to store your battery for an extended period store it at about 50% charged: This goes hand-in-hand with number 3. Also keeping the battery cool during extended storage will slow deterioration. Keeping the battery in a sealed bag or tupperware in your refrigerator is okay, but storing your battery in the freezer is not. When a battery is fully charged oxidation is occurring at its highest rate, and oxidation is essential corrosion. Oxidation occurs whether the battery is in use or not, for this reason it is better to get a high capacity battery rather than a spare. So with this said it almost should go without saying that if you can, buy batteries with a recent manufacture date.
5) Avoid completely discharging your battery: Lancair.com states:
Very deep discharges will quickly, permanently damage a Li-ion battery. Internal metal plating can occur causing a short circuit, making the battery unusable and unsafe. Most Li-ion batteries have protection circuitry within their battery packs that open the battery connection if the battery voltage is less than 2.5 V or exceeds 4.3 V, or if the battery current exceeds a predefined threshold level when charging or is charging
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If you found this helpful please don't forget to hit the "Thanks" button
now that explain why my battery drain so fast,my phone temperature is a bit high these days,thank you :good
I decrease my battry drain with installing som suitable kernal
this way realy effective in my device battry mangement
You're absolutely right, and you hit the nail on the head,
Saeedblack said:
realy[sic] effective in my device battry[sic] mangement
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But the physical battery itself needs care too. Device battery management is more related to how much power the CPU sees that the device has. Understanding how a Li-Ion battery works is kinda important at this point. So basically the positive electrode is made of Lithium cobalt oxide (cathode), or LiCoO2. The negative electrode is made of carbon (anode). When the battery is charging, ions of lithium move through the electrolyte from the positive electrode to the negative electrode and attach to the carbon. During discharge, the lithium ions move back to the LiCoO2 from the carbon. Over time the Lithium ions bond to the carbon thereby restricting the flow, creating resistance which decreases the battery's ability to deliver current. So properly caring for your battery is really the only thing that will slow the inevitable. Its kinda the same thing for a car...all cars eventually die, but if you take care of them they will last much longer than if you neglect them.
Thanks for this. It's not the usually same guide for battery improvementent.
My battery life got a little better.
Thanks mate, that's some good information.
Hi.
Just wondering:
in "5) Avoid completely discharging your battery"
Most battery calibration softwares say you SHOULD fully discharge your battery then fully charge it for a good calibration.
So, someone like me, who likes to try new roms, new nightlys all the time, are "slowly" burning the battery to ashes by calibrating it after every flash.
It looks like running the processor faster than specified (overclocking) can result in higher temperatures inside the device and faster battery wear as a result.
azraelus said:
Hi.
Just wondering:
in "5) Avoid completely discharging your battery"
Most battery calibration softwares say you SHOULD fully discharge your battery then fully charge it for a good calibration.
So, someone like me, who likes to try new roms, new nightlys all the time, are "slowly" burning the battery to ashes by calibrating it after every flash.
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Click to collapse
YES you are slowly burning the battery out, by draining it after every flash. The battery is going to die inevitably anyways though, most of the sources I found suggest doing a "full drain" every 30 charge cycles. Perhaps this is when you should go ahead and do your battery calibration. Also a full drain is not exactly self-explanatory in this case. Your device may say that a battery has 1% of its energy left and to an extent it does, but the battery is designed to cut off before it gets too hot or too low. If you have a tendency to cut your phone back on after it dies then you will deplete the battery completely, possibly resulting in permanent damage.
adrian816 said:
It looks like running the processor faster than specified (overclocking) can result in higher temperatures inside the device and faster battery wear as a result.
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Yes O/C can raise temperatures of the device. Certain kernels run a little hotter than others. My device is currently O/C'd and isn't any hotter than normal when I am not using the device due to CPU governors and what not, and its only marginally hotter than it is when at the stock clock speed. Prolonged heavy use takes a toll on the battery, due to the heat its creating. Also don't let the little bit of heat increase stop you from O/C'ing your device. Many manufacturers use the same cpu with different clock speeds, EX Snapdragon S3 chip is used in the EVO 3D @ 1.2GHz, and the HTC Rezound @ 1.5GHZ from the factory. This is done to reduce power consumption on power hungry phones or to extend the life of a cpu that has proven itself reliable(such as in the example of the Snapdragon S3)...it also helps to market devices without spending more on development.
Good adwise! :good:
This is all very good advice. A lot of it I knew, but I learned a couple new things as well. Glad to see someone making it more easily available to our community!
Sent from my SGH-I777 using xda app-developers app
Found this same information when researching my netbook battery.Turns out there is a good reason it will sleep/hybernate/power off at 3 percent, can damage a cell. On the upside this one will charge faster.
Thanks for the information.
Sent from my GT-S5360 using Tapatalk 2
Oh god, by "avoiding keep it at 100%" you mean "don't use it constantly while charging", right?
I have a seriously problem.
Wish I could do something about #1. My phone can get pretty hot when I'm using it and I like to do a lot of things like playing games or dling torrents which gets it toasty.
Will definitely unplug before 100% from now on though. Thanks
Jane Shizuka said:
Oh god, by "avoiding keep it at 100%" you mean "don't use it constantly while charging", right?
I have a seriously problem.
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Yea that's pretty much the gist of it...heavy use while charging creates even more heat than just heavy use or just charging. Since doing the research for this thread I've been doing things a little differently myself. Instead of leaving it on the charger most of the day I charge it at night and use it til about 50% then charge it up to 80%...it may be in my head but I highly doubt it. Doing as I described I have had 1 full charge (from 40% to 100%) and a top off charge (50% to 80%) and my device has been on since yesterday morning (so 36 hours+ with only a 30% top off charge). This is with moderate use, and my phone is currently at 70%...MUCH better than before though.
This guide is still meant more for longer term physical battery care, but it appears to have helped extend time between charges.
zlc1 said:
Wish I could do something about #1. My phone can get pretty hot when I'm using it and I like to do a lot of things like playing games or dling torrents which gets it toasty.
Will definitely unplug before 100% from now on though. Thanks
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Try a different kernel, or underclocking your phone, that should help with the heat.
Thanks, I'll keep this in mind!
Thanks for the advice, but i thought discharge it completely wont do any harm to the battery since the protection circuit will stop at around 3..0-3.4 mV?
ryanshady said:
Thanks for the advice, but i thought discharge it completely wont do any harm to the battery since the protection circuit will stop at around 3..0-3.4 mV?
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That is about the point the device will cut off, but if you turn it back on like I used to until the device won't turn back on that's when the battery is completely discharged. Battery University goes on to say
Each cycle wears the battery down by a small amount. A partial discharge before charge is better than a full discharge. Apply a deliberate full discharge only to calibrate a smart battery and to prevent “memory” on a nickel-based pack.
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Link to article HERE
*EDIT*
i wish there's a way to stop charging once it reaches 85-95% like my laptop...
Hi all! My Pixel 2 charges fast(~2700mA) up to first ~20%, then the current changes to 1370mA till almost to 90%, then slows a bit till the 100%. I have used Ampere to check the charging speed. I expected the phone to charge to at least 50% at a fast rate, then slow down a bit.
I recently acquired the device and it had May patch, but then after setting the device up, it prompted me for June patch and I installed it. Don't know if the new update could be the problem.
The phone will take battery temperature into account as well. Do you have a way to monitor that and correlate it with where the current switch points are?
Sent from my Pixel 2 using Tapatalk
DurhamHusker said:
The phone will take battery temperature into account as well. Do you have a way to monitor that and correlate it with where the current switch points are?
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I charge my phone early in the morning where it was not used all night. No battery drain apps at all. It just charges from almost 0 to 20 percent really fast, but then slows to a steady 1370 mA.
What I mean is ... Try charging from a different start point.
By the time it's charged at 2.7 amps to go from 0 to 20 it might be getting warm. You might try charging when it's at 20 and cool and see what happens. Or stop at 20 and let it cool down before going any further and see what happens.
Sent from my Pixel 2 using Tapatalk
DurhamHusker said:
What I mean is ... Try charging from a different start point.
By the time it's charged at 2.7 amps to go from 0 to 20 it might be getting warm. You might try charging when it's at 20 and cool and see what happens. Or stop at 20 and let it cool down before going any further and see what happens.
Sent from my Pixel 2 using Tapatalk
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Oh, I see now. Good point. Will try it!
Charkatak said:
Oh, I see now. Good point. Will try it!
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DurhamHusker said:
What I mean is ... Try charging from a different start point.
By the time it's charged at 2.7 amps to go from 0 to 20 it might be getting warm. You might try charging when it's at 20 and cool and see what happens. Or stop at 20 and let it cool down before going any further and see what happens.
Sent from my Pixel 2 using Tapatalk
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So I did some testing and here is what I see:
Phone starts to charge at a good 2700mA rate for ~ a minute, then slows down to 1370mA. It doesn't really matter if phone has 5% of battery before I start charging or 20% or 40%, the charging pattern is the same. At start the battery temperature is ~32 C and when it charges at 2700 for that first minute or so, the temp rises to ~36 C, then phone drops the charging rate to 1370. Phone is pretty much room temperature and not hot or anything like that. I have 2 Google chargers; One is from original Pixel and the other is from Pixel 2 box. Both do the same thing and charge at the same rate.
There are no abnormal app activity or any battery drain. I am using Ampere app to check mA. Did anyone come across this?
It appears you've discovered the magic battery temperature cutoff that HTC has selected for the Pixel 2 ... and that seems to be around 35 or 36 degrees.
For every 10 C rise in temperature, battery degradation doubles by almost every measurable metric. It doesn't surprise me that at around 35 C your phone appears to limit the charge current ... seemingly to avoid making the battery any hotter. Taking the temperature higher for the charge cycle (or for any other reason) will degrade the battery over time. Deep discharges toward zero also reduce the life of a battery. (Keeping it at 50% or higher is recommended for lithium-ion rechargeable batteries.)
If you can cool the phone down to 25 C before starting to charge, I'd be willing to bet that it will charge at the higher rate for longer. Maybe put a small fan on the phone or set it in front of an A/C vent while it charges and see what happens then.
DurhamHusker said:
It appears you've discovered the magic battery temperature cutoff that HTC has selected for the Pixel 2 ... and that seems to be around 35 or 36 degrees.
For every 10 C rise in temperature, battery degradation doubles by almost every measurable metric. It doesn't surprise me that at around 35 C your phone appears to limit the charge current ... seemingly to avoid making the battery any hotter. Taking the temperature higher for the charge cycle (or for any other reason) will degrade the battery over time. Deep discharges toward zero also reduce the life of a battery. (Keeping it at 50% or higher is recommended for lithium-ion rechargeable batteries.)
If you can cool the phone down to 25 C before starting to charge, I'd be willing to bet that it will charge at the higher rate for longer. Maybe put a small fan on the phone or set it in front of an A/C vent while it charges and see what happens then.
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That is interesting as I have had different phones which got even warmer than Pixel 2, but still charged at a good rate. I do know that after 80% of charge of so, the charge rate does go down, which isn't a surprise to me. I just picked up my phone, after it was sitting idle for few hours and see that battery/phone temp is 25 C. I will make sure to start charging phone at a low temperature and see if it will keep the fast charge rate longer.
What you mentioned about the "keeping battery at 50% or so). Did you mean that when battery goes down to 50 or so %, charge it? I usually run battery until about 30 or so % before charging it.
Charkatak said:
That is interesting as I have had different phones which got even warmer than Pixel 2, but still charged at a good rate. I do know that after 80% of charge of so, the charge rate does go down, which isn't a surprise to me. I just picked up my phone, after it was sitting idle for few hours and see that battery/phone temp is 25 C. I will make sure to start charging phone at a low temperature and see if it will keep the fast charge rate longer.
What you mentioned about the "keeping battery at 50% or so). Did you mean that when battery goes down to 50 or so %, charge it? I usually run battery until about 30 or so % before charging it.
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Yes, charging it when it gets to around 50%, based on a number of studies, seems to be the way to go.
Deep discharges and hot temperatures are enemies of battery life for today's lithium-ion cells.
DurhamHusker said:
Yes, charging it when it gets to around 50%, based on a number of studies, seems to be the way to go.
Deep discharges and hot temperatures are enemies of battery life for today's lithium-ion cells.
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I have tried just now to start charging the phone when it is 23 C, but still get the same result. Could it be the June security patch?
Update: So the phone charged by rate of 1370mA from 22% to 100% in 1h 25m. So going from 0 to 100% should take ~1h 45m? Can anyone confirm how long it takes to charge Pixel 2 using original charger?
DurhamHusker said:
Yes, charging it when it gets to around 50%, based on a number of studies, seems to be the way to go.
Deep discharges and hot temperatures are enemies of battery life for today's lithium-ion cells.
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Go a reference to these studies?
This app vendor has seen a lot and isn't convinced discharging to low values has much material effect on battery service life. Charging to high levels does, however. Interesting read I think... with commentry on the often quoted Battery University pages. I agree that heat isn't good whatever.
https://accubattery.zendesk.com/hc/en-us/articles/210224725-Charging-research-and-methodology
https://accubattery.zendesk.com/hc/en-us/articles/212988989-About-the-Battery-University-article
WibblyW said:
Go a reference to these studies?
This app vendor has seen a lot and isn't convinced discharging to low values has much material effect on battery service life. Charging to high levels does, however. Interesting read I think... with commentry on the often quoted Battery University pages. I agree that heat isn't good whatever.
https://accubattery.zendesk.com/hc/en-us/articles/210224725-Charging-research-and-methodology
https://accubattery.zendesk.com/hc/en-us/articles/212988989-About-the-Battery-University-article
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I can't point to anything peer reviewed or funded by the NSF ... so maybe 'studies' is the wrong word.
I've seen the Battery University articles and they've seemed believable to me. It's possible they're flawed. I've also seen articles from these guys - https://www.mpoweruk.com/life.htm ... and other tech writers who corroborate such claims. I've also seen the claims about the high level charging you're pointing to and some who suggest you should keep your battery between 50% and 85% all the time to get the most out of it.
In my S9+ I have the option to Disable fast charging.I have enough time to charge & can enable it Only When I need it.If Not Does it have adverse affect on battery?In iOS 13 Apple has further gave the option for slow charging.Also I find That in PES 2019 when I flick on screen to pass to a player,It sometimes misses.Is there a way to increase touch sensitivity like in S9+
I switched from Xs Max & touch was very sensitive
Can I use apple 5W charger to charge slow or will it have an adverse effect?
Bump
Use a different charge block if you want slower charging. Are you using an aftermarket screen protector? May i ask why you wan to disable warp?
equlizer said:
Use a different charge block if you want slower charging. Are you using an aftermarket screen protector? May i ask why you wan to disable warp?
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No I'm using it with the screen protector that came pre installed.I want to use this phone for long time & don't want any adverse affect due to warp charge
RISHI RAJ said:
In my S9+ I have the option to Disable fast charging.I have enough time to charge & can enable it Only When I need it.If Not Does it have adverse affect on battery?In iOS 13 Apple has further gave the option for slow charging.Also I find That in PES 2019 when I flick on screen to pass to a player,It sometimes misses.Is there a way to increase touch sensitivity like in S9+
I switched from Xs Max & touch was very sensitive
Can I use apple 5W charger to charge slow or will it have an adverse effect?
Click to expand...
Click to collapse
One good thing about the Warp Charger is that it converts the energy in the brick itself instead of the device (in case of huawei , which does this in the device itself). So yeah warp charge isn't harmful in long term.
https://www.youtube.com/watch?v=uHNG-UYSwSo
daniel from xda explained this here.
This is what you want for preserving battery. Lithium batteries hate overcharging and constant recharging.
https://play.google.com/store/apps/details?id=com.slash.batterychargelimit
larsdennert said:
This is what you want for preserving battery. Lithium batteries hate overcharging and constant recharging.
https://play.google.com/store/apps/details?id=com.slash.batterychargelimit
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This is an incorrect statement. Li-Ion batteries last longer the more often you charge them. Charging from 0-25% you will get 250-350 charge cycles, 25-50% you should get 500-600 charge cycles, 50-75% up to 800-900 charge cycles and charging routinely at 75% or higher you can get as many as 1000+ charge cycles. This is before you see significant reduction in battery capacity.
What Li-Ion batteries hate is a deep depth of discharge . It is harmful to let a Li-Ion battery to drain to under 10% battery. This is from BatteryUniveristy.com
The other statement is correct, the brick is where all the real circuitry is and protects the battery from over heating. It's the heat that kills batteries.
I meant continual charging while full. IE 99% to 100% continually. Over discharging and heat kill them too. Leaving them partially charged affords them the best life. Tesla's also do this not charging to 100% daily for longer battery life.
kirito05 said:
One good thing about the Warp Charger is that it converts the energy in the brick itself instead of the device (in case of huawei , which does this in the device itself). So yeah warp charge isn't harmful in long term.
https://www.youtube.com/watch?v=uHNG-UYSwSo
daniel from xda explained this here.
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Click to collapse
Charging at 1.25C is commonly accepted as "no good" for batteries.
Folks worry too much about long term battery life. I used my 3T for over 2 years with the stock Dash charger. Never seemed to lose any significant battery performance compared to when it was brand new.
After 8 years of using phones with 10 watts or less, even 5v 0.7a chargers, those phones got horrible battery life after a year or so, then my old Op5t and 6 of my wife are both holding strong after a solid year of use with 15W charger. Don't listen to Apple much, they don't care about lying their consumer to then prove themselves wrong a few year later. iP10XSM nearly 4 hours to charge, supports fast charging yet you have to buy the charger. Then next iPhone may come with fast charger included, not before some profit from chargers.
larsdennert said:
I meant continual charging while full. IE 99% to 100% continually. Over discharging and heat kill them too. Leaving them partially charged affords them the best life. Tesla's also do this not charging to 100% daily for longer battery life.
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Dude, after about 85%, the charger will trickle charger. Nowadays phone batteries are very smart, they don't overcharge. When it reaches 100%, it stops charging and keeps it at %100 by trickle charging. It's not harmful at all.
Ppl need to stop worrying and spreading false information.
What you don't want to do is to discharge to under 10% then charge to 100% and repeat. Now that's pretty bad for the Li-Ion battery.
Android has software safeguards as well as a physical charge controller by the battery that keeps the battery from overcharging. Overcharging is not a problem anymore.
No sir, it is you who does not understand battery chemistry. I have plenty of experience using Lithium batteries in high stress situations. 100% in a cell phone is 4.2v. Anything over 4.1v is technically overcharged for the chemistry and 3.9v is optimal.
Trickle charging the last bit is a balance issue even in a 1s cell to avoid even more overcharging otherwise Lithium can handle very high rates.
If someone is concerned with charging to 4.2v the app i pointed out is your solution. I don't believe warp charge itself causes any harm to a battery but at 1c or 4ah charge rate is the safe limit and warp could be delivering 6A on occasion to this battery.
larsdennert said:
I meant continual charging while full. IE 99% to 100% continually. Over discharging and heat kill them too. Leaving them partially charged affords them the best life. Tesla's also do this not charging to 100% daily for longer battery life.
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Click to collapse
None of these phones have an issue if you leave them plugged in. The have a circuit that keeps the battery from charging when full. It stops charging and every few minutes it will let charge very slowly to keep it topped off. No damage to the phone or battery will happen.
---------- Post added at 01:54 AM ---------- Previous post was at 01:46 AM ----------
larsdennert said:
No sir, it is you who does not understand battery chemistry. I have plenty of experience using Lithium batteries in high stress situations. 100% in a cell phone is 4.2v. Anything over 4.1v is technically overcharged for the chemistry and 3.9v is optimal.
Trickle charging the last bit is a balance issue even in a 1s cell to avoid even more overcharging otherwise Lithium can handle very high rates.
If someone is concerned with charging to 4.2v the app i pointed out is your solution. I don't believe warp charge itself causes any harm to a battery but at 1c or 4ah charge rate is the safe limit and warp could be delivering 6A on occasion to this battery.
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GO back and read my first post in this thread. After reading that and I generally get home with over 50-60% battery. My batteries on the OP5 and OP6 after 1 year, I upgrade every year, only lost about 4-5% total battery capacity. I see people all the time complaining they are already seeing loss of 15-20% battery capacity and it's how they charge and treat their batteries.
Leaving aside the debate of battery health. I accidentaly discovered that if you Flash the latest magisk canary zip, something gets bugged and Warp charge stops functioning. Only regular charge at 1500 mah Is possible. Flashing stable magisk again gestores Warp charge just FYI.
I use USB tethering every single day, and to get the maximum speed, I have my P40 Pro connected to the USB-C plug on my PC. However, this makes the P40 Pro FAST CHARGE as if its life depends on it.
This is horrible for the battery life, is there any way to disable fast charging?
Use a cable wich doesn't suport fast charging.
Shymmy said:
Use a cable wich doesn't suport fast charging.
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won't that also lower the data speed?
lolan11628 said:
won't that also lower the data speed?
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It shouldn't. Test it.
If you don't take the battery below 40% or above 80% when charging, fast charging should not impact battery longevity much.
The former stresses the battery a lot.
Li's love frequent midrange charging... it can extent battery life by hundreds even thousands of charge cycles.
High cell voltage and excessive temperature are Li's biggest enemies.
Try to avoid cold charging >82°F start temperature, avoid charging an Li below 72F and never charge one that's near or below freezing temperatures! Li plating can occur when charging at low temperatures, it will permanently degrade the battery if it occurs.
Charging is a electrochemical reaction that requires heat to function properly.
Never charge if above 100F though as this is near the top end cutoff for charging. Cool the phone with air and/or a damp microfiber cloth in hot ambient temperatures (>95F) when charging or using.
blackhawk said:
It shouldn't. Test it.
If you don't take the battery below 40% or above 80% when charging, fast charging should not impact battery longevity much.
The former stresses the battery a lot.
Li's love frequent midrange charging... it can extent battery life by hundreds even thousands of charge cycles.
High cell voltage and excessive temperature are Li's biggest enemies.
Try to avoid cold charging >82°F start temperature, avoid charging an Li below 72F and never charge one that's near or below freezing temperatures! Li plating can occur when charging at low temperatures, it will permanently degrade the battery if it occurs.
Charging is a electrochemical reaction that requires heat to function properly.
Never charge if above 100F though as this is near the top end cutoff for charging. Cool the phone with air and/or a damp microfiber cloth in hot ambient temperatures (>95F) when charging or using.
Click to expand...
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Well, the issue is that I use my phone for USB tethering every single day, and Huawei doesn't include any setting to limit the capacity to stop charging at for example 80%
My Samsung tablet for example has this setting natively.... Huawei for some reason refuses to add this.
lolan11628 said:
Well, the issue is that I use my phone for USB tethering every single day, and Huawei doesn't include any setting to limit the capacity to stop charging at for example 80%
My Samsung tablet for example has this setting natively.... Huawei for some reason refuses to add this.
Click to expand...
Click to collapse
My Note 10+ doesn't either
Always doing it the hard way like a bad gf
That's one way to boost OEM battery sales...
Hey, but P40 pro has the smart charging mode ... don't you have it activated ??
Shymmy said:
Hey, but P40 pro has the smart charging mode ... don't you have it activated ??
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I have, but that doesn't actually disable fast charging, nor does it actually stop charging before the battery is completely full. It only in theory does some things when 'it' guesses is appropriate, so it's useless. I haven't really noticed anything.
I looked at the phone exactly when it displayed the message that the phone stopped charging at 80% and that it will be resumed at a certain time (I don't know exactly, about 3 hours).
Since you already know that Pixel 4a supports 18W charging through USB C-C using USB-PD. Is it possible to charge the device a bit more slowly to keep the battery cool and possibly increase its life span?
A simple Google search showed that by using USB A-C cable, it won't be doing USB-PD quick charging instead it will charge using USB-BC (Battery Charging, a legacy standard) which will limit the power at around 7W.
By attaching USB-C end of the quick switch adapter(OTG) that came with the device to power adapter and connecting its other end (USB-A) to the device itself by running a USB A-C cable in between. Will this make the device charge slowly? Can anyone test this?
To find out for sure how much current is being used to charge your phone, you should install an app like this:
Ampere - Apps on Google Play
Measure the charging and discharging current of your battery.
play.google.com
JohnC said:
To find out for sure how much current is being used to charge your phone, you should install an app like this:
Ampere - Apps on Google Play
Measure the charging and discharging current of your battery.
play.google.com
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question is on how to slow charge the device
Well, just get a 1amp charger or use a non-quick charge cable.
The problem is that you won't know if an amazon description for a cable is accurate or not.
So, the way to make sure it is charging slow, is to use the app I mentioned.
I charge my pixel 4a with a 350 mah charger (it is an old Motorola charger in micro usb, i just put à micro usb to usb c little gizmo).
It is around 1,5 w and charge my pixel 4a in around 10 hours , if the pixel is completly empty. You can also use a 5w charger with a usb a usb c câble, it will be faster but warmer
Any brick or cable that doesn't support that protocol or can't supply enough amps will cause the power controller to default to slow charging.
Most fast charging capable phones also have a software option to disable fast charging regardless of the brick/cable's rating.
The real trick is getting it to fast charge when you want it to
My goal was to charge my pixel 4a during the night with the slowest method to keep my battery as Healthy as possible. The 350mah just give me that. ( i keep my phone four to five years so i Try to take care of my battery)
lop1 said:
My goal was to charge my pixel 4a during the night with the slowest method to keep my battery as Healthy as possible. The 350mah just give me that. ( i keep my phone four to five years so i Try to take care of my battery)
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Don't let it drop below 40% or charge beyond 72% in that case.
At some point it's just easier to replace the battery though
blackhawk said:
Don't let it drop below 40% or charge beyond 72% in that case.
At some point it's just easier to replace the battery though
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This seems more an urban legend this 40 72%, the charging processor take care of that For you.
lop1 said:
This seems more an urban legend this 40 72%, the charging processor take care of that For you.
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Li's prefer midrange usage with frequent partial charges. Cuts down the heat and the high cell voltage that degrades them faster. Degrades them only a fraction of a full charge cycle. Longer lifespan and less time charging for the same amount of mAh. Win-win.
Even today many confuse their requirements with NiCads Thinking they should fully charge/discharge them. Trying to convince some them otherwise is like talking an alcoholic out of drinking booze. "I've always done it that way..."
@blackhawk
but if someone who follows this 40-80 rule, how to reset battery stats?
Can it be done using ADB command?
ashutoshmn said:
@blackhawk
but if someone who follows this 40-80 rule, how to reset battery stats?
Can it be done using ADB command?
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I really don't use those stats at all. More Google hype that never proved all that useful for me.
I use Galaxy Labs Battery Tracker, the history log* of Accubattery as well as karma Firewall logs to track usage.
Occasionally you may want to do a calibration too as the % accuracy will drift over time.
*as long as my usage stays at >10%@ hour SOT, I'm not very concerned
blackhawk said:
I really don't use those stats at all. More Google hype that never proved all that useful for me.
I use Galaxy Labs Battery Tracker, the history log* of Accubattery as well as karma Firewall logs to track usage.
Occasionally you may want to do a calibration too as the % accuracy will drift over time.
*as long as my usage stays at >10%@ hour SOT, I'm not very concerned
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and by calibration, do you mean drain to 0 and charge to 100 every once in a while?
ashutoshmn said:
and by calibration, do you mean drain to 0 and charge to 100 every once in a while?
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Yeah, which I don't like doing. If falls way out of calibration you'll think you're at 20% when in fact you're at 7% for example.
Many say to repeat the calibration cycle 2 or 3 times for it to take.
If the battery has failed this can be a dangerous procedure. How do I know? Just had a battery failure but because of the case didn't see the back cover bulging. All the while I was happily torturing the bad cell for over a month begging it to do its worse
I was fortunate it didn't damage the display of my Note 10+ or worse.
If you encounter erratic fast charging, reduced battery capacity always suspect a battery failure and look for the telltale back cover bulge. These bag Li's can fail at any time especially as they get older.
BTW, people who are reading this, you can charge your 4a at 7.5W (5V*1.5A) using OTG adapter plugged into the charger and a USB A-C cable. The temp. increase of battery is way less than full fast charge of 18W.
ashutoshmn said:
BTW, people who are reading this, you can charge your 4a at 7.5W (5V*1.5A) using OTG adapter plugged into the charger and a USB A-C cable. The temp. increase of battery is way less than full fast charge of 18W.
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Also bare in mind that even when slow charging you never want the Li cell temp below 72°F, but 82F is a better bottom threshold temperature.
Li plating* can result from cold or hot (>100F) charging regardless of charging rate.
NEVER EVER attempt to charge an Li in near freezing temperatures*
*this can lead to a thermal runaway event
blackhawk said:
Also bare in mind that even when slow charging you never want the Li cell temp below 72°F, but 82F is a better bottom threshold temperature.
Li plating* can result from cold or hot (>100F) charging regardless of charging rate.
NEVER EVER attempt to charge an Li in near freezing temperatures*
*this can lead to a thermal runaway event
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Billions of Li devices in service around the globe. If this was a 'thing' manufactures would prevent charging at low temps. Not debating the wisdom or detremental effects on longevity of charging at low/high temps. No need to season the spew with faux drama.
DB126 said:
Billions of Li devices in service around the globe. If this was a 'thing' manufactures would prevent charging at low temps. Not debating the wisdom or detremental effects on longevity of charging at low/high temps. No need to season the spew with faux drama.
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Do what you want... and you're own research*.
You offer zero good advice and a half mass flame attempt.
Lead me, follow me or get the hell out of my way.
*https://www.sciencedirect.com/scien...of the internal,also affect the battery power.
Temperatures I suggested are for optimum performance/longevity with minimum chance of Li plating from multiple sources. They are very conservative.
I just had a battery failure on my Note 10+ that started by slow charging it to 100% at about 45-50°F. Boom, just like that. Took over a month to realize what had happened but that's what started the whole mess. I was fortunate the swollen battery didn't damage my display.
Oy vey - self-designated expert in a box with a short fuse. Happy Mother's day, champ.
DB126 said:
Oy vey - self-designated expert in a box with a short fuse. Happy Mother's day, champ.
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WYSIWYU... call it like I see it.
Mum's been dead for decades.
Hope your's is not... spend some time with her.
You only get one.