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My tylt Qi charger heats my battery to 110F (updated). Ive been told that for some reason all Qi wireless chargers heat the battery this much in this particular device.
Please tell us your charger and max battery temp during charge. There are a lot of apps that will tell you max battery temp and here is the one I use
https://play.google.com/store/apps/details?id=com.fsinib.batterymonitorpro
Please charge from at least 50% down and give us the max temp during charge as opposed to the final temp at the end.
111F, 44C nokia dt 9000
110F, 43C tylt vu
106F, 41C koolpad
102F, 39C choe
102F, 39C google LG stock
102F, 39C DT-910
093F, 34C generic (need longer test)
090F, 32C ravpower (need longer test)
Thanks to everyone reporting so far!
NCguy said:
My tylt Qi charger heats my battery to 108F. Ive been told that for some reason all Qi wireless chargers heat the battery this much in this particular device.
Please tell us your charger and max battery temp during charge. There are a lot of apps that will tell you max battery temp and here is the one I use
https://play.google.com/store/apps/details?id=com.fsinib.batterymonitorpro
tylt vu max 108F
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Click to collapse
ive heard complaints about overheating nexuses but mine only get up to around 34degree C which is something like 90deg F. that's with a case on the phone as well. i read a little about the Qi standard and the phone is supposed to command charging current so external interference or losses in the reciever coil don't cause the charge current to be lower than the the transmitter is regulating. so maybe some batteries are subject to inductive heating, maybe some phones have a short in the reciever coil. but mine charges to 100% and never gets hot....
I was charging with a Nokia DT 9000. Threw it on at 30 percent. A few hours later I felt it with my hand and it was rather warm so I checked the temp and it was 44C so I pulled it off.
Edit: in a Ringke slim case
Sent from my Nexus 5 using Tapatalk
Dani897 said:
ive heard complaints about overheating nexuses but mine only get up to around 34degree C which is something like 90deg F. that's with a case on the phone as well. i read a little about the Qi standard and the phone is supposed to command charging current so external interference or losses in the reciever coil don't cause the charge current to be lower than the the transmitter is regulating. so maybe some batteries are subject to inductive heating, maybe some phones have a short in the reciever coil. but mine charges to 100% and never gets hot....
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34C is actually a bit over 93F, but much cooler than I have seen reported so far. Which charger and what temp reporting app?
ravPower charger. Went from 80% to 100% in 40 minutes. So half as fast as the stock USB wall charger but still better than I thought it would do. Temp never exceeded 90 degrees.
ok, seems the battery actually cooled while i was installing the app. i installed smart battery monitor. since i posted that, it went up to just under 96 degrees F.still no 108 degrees. but it has been on the charger for over 30 min strait and wasn't off the charger for long before that.
either way i have no problems with heat on my phone, it never feels much warmer than other phones ive had on usb chargers. the charger i'm using is a generic chinese charger. the box has no name brand. i also have a samsung charger but haven't checked the temperature with it. it doens't seem any different.
http://www.amazon.com/Lerway-Wirele...TF8&qid=1385521087&sr=8-2&keywords=qi+charger
Dani897 said:
ok, seems the battery actually cooled while i was installing the app. i installed smart battery monitor. since i posted that, it went up to just under 96 degrees F.still no 108 degrees. but it has been on the charger for over 30 min strait and wasn't off the charger for long before that.
either way i have no problems with heat on my phone, it never feels much warmer than other phones ive had on usb chargers. the charger i'm using is a generic chinese charger. the box has no name brand. i also have a samsung charger but haven't checked the temperature with it. it doens't seem any different.
http://www.amazon.com/Lerway-Wirele...TF8&qid=1385521087&sr=8-2&keywords=qi+charger
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30 mins is not long enough to test it. You need to let it go from about 50% or less to full. The battery temp will vary a lot depending on the full capacity. My software captures the highest temp achieved during the charge because as it reaches full it will already start cooling down. You need to look at a temp graph of the entire charge cycle.
I just received my Nexus wireless charger and installed the free version of the app the OP linked, will charge overnight and see what the app says.
NCguy said:
30 mins is not long enough to test it. You need to let it go from about 50% or less to full. The battery temp will vary a lot depending on the full capacity.
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Sure it's enough. If you plan on charging from 50% or less to full then your battery will get hotter. Wireless or wired. It's just how charging works. More time=more heat. Your still well within the safe zone at 110 though.
http://www.mpoweruk.com/lithium_failures.htm
theesotericone said:
Sure it's enough. If you plan on charging from 50% or less to full then your battery will get hotter. Wireless or wired. It's just how charging works. More time=more heat. Your still well within the safe zone at 110 though.
http://www.mpoweruk.com/lithium_failures.htm
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Then why not charge it for 10 seconds? I'm just trying to get in a full charge cycle to see the max temp. And actually at the end of the cycle your temp should go down due to the way lithium chargers scale down at the end of the cycle. So charging a 95% full battery wouldn't tell us much.
Your linked article says damage starts to occur at 120F. Well, that depends entirely on the particular battery formulation. It's not something you can generalize. Lithium batteries are definitely not all the same. What you can generalize is that more heat means more wear even when below the damage threshold for the specific battery.
37-39°C from ~10% to 100% :good:
NCguy said:
30 mins is not long enough to test it. You need to let it go from about 50% or less to full. The battery temp will vary a lot depending on the full capacity. My software captures the highest temp achieved during the charge because as it reaches full it will already start cooling down. You need to look at a temp graph of the entire charge cycle.
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Click to collapse
the phone was charging for an hour before that and it wasn't off the charger for "that" long. i'm not paying for an app i plan to use once and delete. sorry. i found a free app that will log it. i'll post results in the afternoon but the phone has never ever been warm enough for concern or even a second thought.
roli006 said:
37-39°C from ~10% to 100% :good:
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Which charger are you using?
Dani897 said:
the phone was charging for an hour before that and it wasn't off the charger for "that" long. i'm not paying for an app i plan to use once and delete. sorry. i found a free app that will log it. i'll post results in the afternoon but the phone has never ever been warm enough for concern or even a second thought.
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Click to collapse
Thanks for your help. There's a free version of the app I linked and I also mentioned that there were many apps available that measure battery temp. I certainly wasn't try to get anyone to purchase that app. I simply made the link available because that was what I personally was using. If someone comes up with one that has better graphics please link it as I didn't have time to evaluate all the apps in this group.
NCguy said:
Which charger are you using?
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Click to collapse
I bought this for 30€ (~40$)!
http://www.amazon.de/induktive-Lade...TF8&qid=1385559057&sr=8-4&keywords=B00E5D70ME
It is small and has a rubberized ring and the phone stays in position! I can also lay a small bag between the charger and the phone (http://www.amazon.de/fitBAG-Handyta...qid=1385559718&sr=8-2&keywords=nexus+5+fitbag). The only disadvantage is that you need your own power supply unit for this!
I think the product is identical with this on amazon.comhttp://www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias=aps&field-keywords=qi t-200
Official Google/LG wireless charger, phone was on it all night last night and highest temp reported was 101.5F and today while on subway and or roaming my battery temp hit 102.6F. This is with the bumper case on and phone in my shirt pocket under a jacket. I am inclined to think that if the phone gets that warm when roaming or searching then the charge temp is just fine.
Raistlin1 said:
Official Google/LG wireless charger, phone was on it all night last night and highest temp reported was 101.5F and today while on subway and or roaming my battery temp hit 102.6F. This is with the bumper case on and phone in my shirt pocket under a jacket. I am inclined to think that if the phone gets that warm when roaming or searching then the charge temp is just fine.
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That charging temp doesn't seem too bad to me as compared to the data from the other chargers reported so far. Keep in mind that high battery temp as a result of charging is much worse than rise due to ambient or discharge.
I think the jury is out as to how much affect high charge temp will have on the Nexus 5 battery. No one seems to have any specs and I think experience is going to be the only way to really know. I think we can safely say the temp rises significantly more than with the usb charger.
from what i've read about Qi i dont thnk the problems are with chargers unless they are just ignoring the charge controllers requests to lower current. the 5w charge power is supposed to be regulated by requests from the receiver (phone). so if the phone is heating it may be a phone defect like a short in the coil causing eddies and heating the coil. but i guess there can be factors with the charger...
ok second (this time proper) test with my generic chinese $18 charger.
30-37deg C, graphed out with Battery Info app. 27%-100% screen on the whole time with the phone in a case. thats almost a worst case scenario.
I get around 40 °C (104 °F) with either the TYLT VU or the Koolpad. I usually start at around 50% SOC and it peaks at around 90% SOC. After that the temperature drops a few degrees. I attached a typical profile with the Koolpad.
stbxxl said:
I get around 40 °C (104 °F) with either the TYLT VU or the Koolpad. I usually start at around 50% SOC and it peaks at around 90% SOC. After that the temperature drops a few degrees. I attached a typical profile with the Koolpad.
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Looks like 41C on the chart. Do you have a chart you can post for the tylt?
My Samsung S8+ gets how while wirelesscharging. Is anyone experiencing the same issues?
Mine gets warm but not exactly hot. There will be extra heat due to the tech involved but it's okay unless it's uncomfortably hot.
biffwitch said:
Mine gets warm but not exactly hot. There will be extra heat due to the tech involved but it's okay unless it's uncomfortably hot.
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Did some measuring: The device is at 50°C on the back.
if thats warm but not hot I wouldn't worry. So does mine.
Using the genuine S7 style fast charger I leave mine on the charger when at my desk well beyond full charge at most it's gets slightly warm
Sent from my SM-G955F using XDA-Developers Legacy app
Mine gets warm but not too hot with the new convertible wireless charger.
Sent from my SM-G955F using Tapatalk
Mine gets a lil warm, only time it does actually.
It's because some of the electricity that's transferred wirelessly turns to heat, it's a problem on every wireless charging device. Heat is poison to the battery, the best way to charge the battery taking in mind durability in the future is cable charging with fast charging disabled, no matter what fast charging technologies are invented, slower charge speeds are always better for the battery's health
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
Click to expand...
Click to collapse
Oh, I see now. Good point. Will try it!
Charkatak said:
Oh, I see now. Good point. Will try it!
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Click to collapse
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
Click to expand...
Click to collapse
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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Click to collapse
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.
Click to expand...
Click to collapse
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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Click to collapse
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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Click to collapse
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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Click to collapse
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.
Click to expand...
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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Click to collapse
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.
Click to expand...
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.
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
Click to expand...
Click to collapse
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.