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[INFO] *UPDATED -17 June 09* Battery life problems? Stop here!

This is a "Quick guide" to your battery - APPLIES TO Li-ion BATTERIES ONLY! (simplified version of an older thread http://forum.xda-developers.com/showthread.php?p=3834773#post3834773 )
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This info doesn't come from me but from 2 (I believe trustful) sources:
Isidor Buchmann,CEO of Cadex Electronics Inc., in Vancouver BC, award winning author of many articles and books on batteries,has studied about rechargeable batteries for 2 decades
Fran Hoffart, Applications Engineer, Linear Technology, Milpitas, California
Original web sites:
http://www.batteryuniversity.com/partone.htm
http://www.buchmann.ca/faq.asp
http://powerelectronics.com/portabl..._ics/proper_care_extends-li-ion-battery-0425/
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Charging tips
partial-discharge cycles can greatly increase cycle life, and charging to less than 100% capacity can increase battery life even further
after a full charge, a Li-ion battery will typically lose about 5% capacity in the first 24 hours, then approximately 3% per month because of self-discharge and an additional 3% per month if the battery pack has pack-protection circuitry
no need to charge for 5+ hours for the first time (priming), this doesn't work for li-ion chemistry
use ONLY ORIGINAL or HTC CERTIFIED chargers and batteries (they have extremely important function of cutting off
the current when charging is at 100% * )
battery cannot be reconditioned by over-charging - avoid higher than 4,2V current (which might boost capacity but shorten cycle life)
no need to worry about memory effect with "unscheduled" charging
avoid soft reseting your phone while charging
allow several full charges after doing hard reset to get accurate reading
try to keep battery stress as low as possible when charging (sure shot is to charge the phone when turned off)
a deliberate full discharge and recharge every 30 charges corrects "wrong reading" phenomena in most cases, if ignored, the battery gauge will become increasingly less accurate
using battery chargers that feature a reduced float voltage (4-4.1V) can increase battery life when used to charge a 4.2V Li-ion battery
Discharging tips
full discharge cycles (down to 2.5 V or 3 V, depending on chemistry) should be avoided if possible (except for above mentioned case of recalibrating device)
using only 20% or 30% of the battery capacity before recharging will extend cycle life considerably. As a general rule, 5 to 10 shallow discharge cycles are equal to one full discharge cycle
avoid frequent full discharges, very deep discharges will quickly, permanently damage a Li-ion battery
avoid high-stress discharging, slower discharge=better battery life
discharge level doubles with every 10°C (18°F) of increased enviromental temperature
Usage tips
avoid extreme load conditions (applications using a lot of energy)
avoid keeping a fully charged battery at high temperatures
battery stored for a year or more will start "aging" - irreversible
capacity lowering
maintaining a Li-ion battery in a fully charged condition will shorten its lifetime
store batteries charged at 40%
replace battery if original level drops bellow 80%, battery will lose about 10% of useful capacity each year (whether used or not)
* Selecting a charger that uses minimum charge-current termination (C/10 or C/x) can also extend battery life by not charging to 100% capacity. For example, ending a charge cycle when the current drops to C/5 is similar to reducing the float voltage to 4.1 V (see fig.3 bellow). In both instances, the battery is only charged to approximately 85% of capacity, which is an important factor in battery life. The letter “C” is a battery term used to indicate the battery manufacturers stated battery discharge capacity, measured in milliamp-hours. For example, a 2000-mAhr rated battery can supply a 2000-mA load for one hour before the cell voltage drops to its zero-capacity voltage.
Types of Li-ion batteries:
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Charging dependencies:

Thank you for a very informative post. Very good info here.

How can I full discharge my battery? Simply left my TP on until it dies? I am wondering that if it is wrong reading battery level, maybe it switch itself off when it reads 0% but maybe the real battery level is..10% or 15%, how can I be sure that the battery is full discharge? My TP is 3 month old, so, or my battery is damaged, or my TP is not accurate reading battery level; I was forgotting that sometimes I have done some soft reset while charging (but not in the past two weeks)

avoid soft reseting your phone while charging
Click to expand...
Click to collapse
Noticed something interesting the other day, here are the series of events that occurred:
- Battery died - phone turned off (is that considered a full discharge?)
- plugged it in, and it started to charge. The lights on the pad began to pulsate.
- Sometime later I realized that the phone was off so I turned it on. Mind you the lights were still pulsating indicating that it was charging. After the Version # screen came up and just before the Windows Mobile screen comes up. The lights which was in the middle of a pulse, stopped, and began again from the start. Is that considered an interruption in charging?

This should be a sticky!
The main problem I've come across is an inaccurate battery meter. Quite a few people using RRE WM6.5 have reported battery issues, but I've noticed its the meter, not the actual battery.
I RARELY did a full discharge (and I've had my phone since it came out in November). So after flashing the ROM, I did a full discharge. It stayed on 20% for a long time, then it stayed at 7% for a long time, then it seemed like it was at 1% forever. The phone finally shut off. I did a full charge while the phone was off. Now the battery meter is MUCH more accurate.

I'm using RRE's and noticed the "meter" issue. Think I'll give your suggestion a try and let it die over the weekend and juice it back up.
mindfrost82 said:
This should be a sticky!
The main problem I've come across is an inaccurate battery meter. Quite a few people using RRE WM6.5 have reported battery issues, but I've noticed its the meter, not the actual battery.
I RARELY did a full discharge (and I've had my phone since it came out in November). So after flashing the ROM, I did a full discharge. It stayed on 20% for a long time, then it stayed at 7% for a long time, then it seemed like it was at 1% forever. The phone finally shut off. I did a full charge while the phone was off. Now the battery meter is MUCH more accurate.
Click to expand...
Click to collapse

p51d007 said:
I'm using RRE's and noticed the "meter" issue. Think I'll give your suggestion a try and let it die over the weekend and juice it back up.
Click to expand...
Click to collapse
My phone has been off the charger for about 8.5 hours now. I sent/received about 10 texts, and I've had about 10 emails pushed through Windows Live and my battery is at 92% now. All on Edge with a good signal. Not too bad for me.

Feedback
I just would like to ecourage people to leave their feedback, if they tried some of the tips from this thred. Just to see if they are relevant in "real" life.
THANK YOU ALL!!!!

Battery Life
While the Fuze doesn't get the greatest battery life, one thing I immediately noticed was the extension of life when I switched my email from checking every five minutes to once every hour.
Just saying.

mxgoldman said:
While the Fuze doesn't get the greatest battery life, one thing I immediately noticed was the extension of life when I switched my email from checking every five minutes to once every hour.
Just saying.
Click to expand...
Click to collapse
Every 5 minutes would cause a huge drain in battery. You would be better off pushing email to your phone than checking every 5 minutes. Once per hour isn't too bad unless you're getting lots of emails every hour.

This is great information...thanks for the tips...and yes, getting emails every five minutes SERIOUSLY drains the battery...i learned that the hard way

thesilentnight said:
This is great information...thanks for the tips...and yes, getting emails every five minutes SERIOUSLY drains the battery...i learned that the hard way
Click to expand...
Click to collapse
I noticed when I could watch my battery drain and the phone was burning hot.
It was also shocking when it had 100% charge when I went to bed and was dead when I woke up.

Same here
MX, I thought I was going mad (going m-m-m-m-mad, I say). Last night, I turned off S2U2 (a notable battery drainer) and my Pro was at 100% battery at around 11pm, woke at 7am to find that the battery was @ 5%! To my knowledge, nothing else was running - certainly no phonecalls or texts and no other actions. Only thing I noticed (because I had forgotten) was that the Bluetooth headset was still connected and switched on - surely this couldn't have killed the battery in 8 hours?

i get horrible battery life and i follow all of the "rules" is it really possible that active sync is the battery killer ?

I heve recently bought a new HTC Touch Pro. After just few weeks, battery's gone crazy. It doesn't want to recharge, even connected to charger for 16 hrs. I got the icon of charging, I can still do anything as usual despite the battery doesn't save any energy. Could it be some energy drain? I'd be grateful for help.
gmanfuzing: I think it depends on how much operational memory does the ActiveSync use. Try shutting it down.
edit: problem solved, gentlemen. It's a failure of my ac adapter. Sorry for making trouble.

There seems to be a bunch of battery questions around again so........bump.

my battery has gone to hell
im on sheps 6.5 with the newest att radio
i had my phone at 100 pct an hour and half ago and it has since dropped to 85 and ive sent literally one text

Battery Drain Problem - Day 1
I got my Raphael 5 days back and immediately installed few apps and did some tweaks (energy and performance) using PHM Reg, Diamond Config tools and suddenly the battery started draining like crazy. ( 45% ) in 4 hrs.
I did a hard reset, disabled TF3D, did some energy saving tweaks using Advanced Config.
Here are my readings...
8.30 am - 100%
9.30 am - 98% - 2% Just Standby ( No push mails or Data Connections )
10.30 am - 95% - 20 mins MP3 and 2 SMS
11.30 am - 90% - Did Absolutely Nothing except 4 checking the battery
12.30 pm - 90% - Did Absolutely Nothing except 4 checking the battery
1.30 pm - 86% - Disabled Battery Icon ( Soft Reset ) Installed Ariel Battery
and continuing I'll keep updating...
BTW is this reading normal??? Personally im not too pleased.
P.S.: Just want to know how can I know what version of ROM and Radio is currently there in my device

1st post updated
Just to let you know that 1st post was updated with some more info

rajith said:
I got my Raphael 5 days back and immediately installed few apps and did some tweaks (energy and performance) using PHM Reg, Diamond Config tools and suddenly the battery started draining like crazy. ( 45% ) in 4 hrs.
I did a hard reset, disabled TF3D, did some energy saving tweaks using Advanced Config.
Here are my readings...
8.30 am - 100%
9.30 am - 98% - 2% Just Standby ( No push mails or Data Connections )
10.30 am - 95% - 20 mins MP3 and 2 SMS
11.30 am - 90% - Did Absolutely Nothing except 4 checking the battery
12.30 pm - 90% - Did Absolutely Nothing except 4 checking the battery
1.30 pm - 86% - Disabled Battery Icon ( Soft Reset ) Installed Ariel Battery
and continuing I'll keep updating...
BTW is this reading normal??? Personally im not too pleased.
P.S.: Just want to know how can I know what version of ROM and Radio is currently there in my device
Click to expand...
Click to collapse
Settings-System-Device Info

NEXUS i9023 battery max at 93?

Hi,
anyone has the same problem as mine?
my battery max at 93. fully charged it will still display 93.
when ur batt is charging, it will display charging. but when it's full it will display charged.
yeah. my charged will display 93%. LOL?

I thinks its normal for the nexus s that it doesnt max out at 100%.
Mine usually is fully "charged" when its at 96% Battery.

i can confirm this, mine stops usually at 98%

Mine varies between 94 and 99, but most of the time it stops at 95.

From what I've heard, it's performance thing. Full discharges reduce li-ion life span, and 100% charges might also, to a lesser degree.
D720 is the same.

Yup mine gets to 95 and is done, I don't realty mind that but what I do mind is battery life I want it to last longer right now I barely make it a work day and I have to charged on my way home I'm tuning some services cause I need them just like I do in my iPhone but the battery dies too fast sometimes hopefully us cause I have for like 3 days
Sent from my Nexus S 4G using Tapatalk

Normally mine stops charging at 95% but I've gotten to 100%.
Here's how I did it:
1) Charge the phone until it stops charging
2) Turn off the phone and continue to charge until the battery meter stops blinking
3) Turn on phone and enable "stay awake" while charging
4) Run an app that drains the battery (I used Angry Birds) and leave it on, don't turn off the screen
5) After about an hour it reached 100%
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ps. It may be bad for the battery to constantly charge to 100%.

This is a known case to some Samsung devices, unfortunately
Thus, actually i would advice people to actually use it as it is, and dont let it bother you. after all, nexus s still have some pretty good battery life in general.

94% then as soon as I un-plug it drops to 89% but still lasts a day.

What's good for battery life? I have this device for over a week and I feel like it doesn't last the long, how much does it last you guys?
Sent from my Nexus S 4G using Tapatalk

Download from the market ''Battery Calibration''. I almost forgot, i think u need a rooted phone because it deletes the battery.bin file.

samsung actually added this feature into the batt to protect it from overheat.
I think its weird and un-necessary anyway
but cos I have this phone i just need to live with it until I buy some new toy

Mine's roof is @ 95% :/

I have max on 97%
Sent from my Nexus S I9020T

Q: I unplugged my phone, and my battery dropped from 100% to 95% immediately, or it won't/takes along time to charge past 99%, what gives?
This is by design. Your phone will slow down and eventually stop pulling charge at or slightly greater than ~95% regardless of what your battery indicator says. This is to extend the overall life of the battery, as constant 100% to 0% charge/discharge cycles will cause it to fail prematurely. If you're interested in really pushing it to 100%, you can use a technique that is called "bump charging" and is better detailed here: http://bit.ly/f6xiZ0
Click to expand...
Click to collapse
The answer is found in here. I suggest you look for the answer b4 posting the question next time.

Charging speed

To power up, you consume Red Bull. But your phone just needs its adaptive fast charger. Rate this thread to express how quickly the Huawei Nexus 6P can charge. A higher rating indicates that it charges extremely fast.
Then, drop a comment if you have anything to add!

Charges about 2% per minute from 0-50%, then does about 1% every 2 minutes from 50-100%.

Fastest charging phone I've ever had.

59% to full charge in about an hour, not bad IMO

svetius said:
Charges about 2% per minute from 0-50%, then does about 1% every 2 minutes from 50-100%.
Click to expand...
Click to collapse
not making sense. total of 150min (2h30) for charging it?

I had a charge from 7% to 100% in hour and a half. (Having had the phone for a week, and this round had 50 and a half hours unplugged with around 5+ hours SOT, first day mostly LTE and commute to work, 2nd day home on wifi).

warplane95 said:
not making sense. total of 150min (2h30) for charging it?
Click to expand...
Click to collapse
75 mins with his math. 25 mins to get to 50% then another 50 mins to get to 100%

King_MSD said:
75 mins with his math. 25 mins to get to 50% then another 50 mins to get to 100%
Click to expand...
Click to collapse
I was wrong. but you're also wrong.
125min=2h05min
25min for the first 50% and 100min for the rest

I think the OP means 1% every minute from 50 to 100. No way in hell is the phone doing .5% a minute charging on the fast charger.

I've went from 0 to 100 in about 1hr 20 mins.....fastest charging I have ever experienced.

I've seen 2740mah on ampere while charging. It charges fast, haven't timed it.

bsg411 said:
I've went from 0 to 100 in about 1hr 20 mins.....fastest charging I have ever experienced.
Click to expand...
Click to collapse
Too bad it's only fast charging with the Original stock charger, I hope third party accessories will come out soon!

nrfitchett4 said:
I've seen 2740mah on ampere while charging. It charges fast, haven't timed it.
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I actually have some concerns about fast charging and battery degradation. I'm not a battery expert but I have had a lot of Li-Ion IMR batteries for other electronic devices. I noticed that rapidly charging those batteries reduces battery life and charge capacity. Now I know the Nexus 6P has a Li-Poly or Li-Po battery and it has a sightly different composition than an IMR (Magnesium vs. Polymer) but does anyone know how Li-Po batteries handle repeated fast charging?

Charges faster than I expected... Even in my car.

tele_jas said:
Charges faster than I expected... Even in my car.
Click to expand...
Click to collapse
What do you use in your car? I can't find a car charger from anywhere but China and it'll take a month to get here.

I was personally blown away at how fast it charges. I didn't time it but I was at 12%, plugged in, did some Web browsing and watched a bunch of you tube videos and I checked and I was at 68%. Call it a half hour 45 MINS. Crazy fast, makes me not miss my extended batteries bc I know if I'm low I just gotta plug in for an hour and I'll be 100% again

Tb0n3 said:
What do you use in your car? I can't find a car charger from anywhere but China and it'll take a month to get here.
Click to expand...
Click to collapse
I'm using the same cig-lighter, double USB Plug I've had for a couple years... But I just found a cable on Amazon that fit and that's what I'm using..... Nothing fancy.
When I knew I'd eventually get a USB-C phone, I started stocking up on the cables...I'd pick up about one a month. I have about 5 or 6 now, so I'm good at home, on the road, at work, in the wife's car, and have a spare in my laptop bag and an extra one I haven't opened... Plus the stock Nexus 6P charger, so I'm good.

I am also amazed with how fast this phone charges. Fastest charging I have ever seen.
I am also amazed by how little it will consume over night when you forget to plug in. I forgot to plug it in when it was at 70% and when I woke up 8 hours later it was at 67%.

Anyone else notice it gets hot while fast charging??

Sony Battery (doesn't) Care (at all) (not) working after Pie Update :edited

Howdy...
Today I finally took the OTA to Pie.
And when I plugged my phone this evening I got a Notification about Sony Battery Care, which told me it'll charge my phone slowly.
Whyever it wants to charge until 03:40 in the morning, when my alarm clock is clearly set to 6:30 is a mystery to me.... But whatever Sony.
As it seems it was bugged on Oreo for quite a few people. Did it work for you guys?
I'll do a little testing and check how the charging progress is working now. Next time I'll try to discharge to 1% and charge fully over night. While measuring current and voltage externally. So we can compare to normal charging.
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Edit:
Well.... seems like it breaks really really easily.
After i got this Notification on the Lockscreen i got a call from a friend and unplugged the Phone.
When i was done, about 5 minutes Later i've replugged the phone but BatteryCare didn't want to start again.
Not only didn't it come back that time, i haven't seen the notification since then! Not even once. It simply vanished for good.
So does anyone of you ever use Battery Care? Even on a regular schedule?

Nice wallpaper

Edit:
Well.... seems like it breaks really really easily.
After i got this Notification on the Lockscreen i got a call from a friend and unplugged the Phone.
When i was done, about 5 minutes Later i've replugged the phone but BatteryCare didn't want to start again.
Not only didn't it come back that time, i haven't seen the notification since then! Not even once. It simply vanished for good.
So does anyone of you ever use Battery Care? Even on a regular schedule?

I never saw it.
Even on Oreo.
(I use it since May).
But I only charge it at day until 80% with accubattery.

Yeah battery care doesn't kick in again if you remove it from charge before it's finished. Although I had this with oreo also so I'm kind of used to it.

Who cares about that ? Not me

I don't use Sony battery care, I don't trust it.
But my charger is connected to a programmable wifi plug. It switches on at 5 a.m. Thus, when I wake up, my device is fully charged.
Of course, the aim is to keep the battery level above 90% as short as possible...

So we don't even have a single positive response of it working as advertised?^^
That's pretty sad for Sony.

If you plug and unplugged your device a few times each day or at different hours once a day it won't work.
For example, plug your device between 22h and 23h everyday, after a few days, battery care will turn on.
Envoyé de mon H8266 en utilisant Tapatalk

Well yeah.... sorry i plug my device between 21:00 and 02:00 every 2nd day but i always unplug at 6:50 so AI is too stupid to recognize this scheeme?

Haldi4803 said:
Well yeah.... sorry i plug my device between 21:00 and 02:00 every 2nd day but i always unplug at 6:50 so AI is too stupid to recognize this scheeme?
Click to expand...
Click to collapse
AI are generally somewhat stupid!

Battery care works flawlessly for my xz2.
Each and every night as soon as I connect the charger i get an annoying notification/message sound.
The notification is battery care, I would never get a notification sound before pie. I hope in the next update the sound is again muted.

Should I make my Battery Care learn my habit?
Hershchel Clogs said:
Any time you reverse the charge current is one cycle. How far down you discharge is your depth of discharge. So even if you drain the phone from 80% to 70% and plug it in and only charge it back up to 80%, that's one cycle. What you are saying would be true if you don't discharge the battery at all, similar to what Sony does with their battery care. You can charge lithium in short bursts but if you discharge between those charges then you are cycling your battery. So no, short incomplete charges aren't absolutely detrimental to your battery but will be considered in regards to your overall cycle life. For every 70 millivolt (roughly 10%) drop in voltage during a cycle, your overall cycle life is cut in half. Meaning you'll get twice as many cycles if you only drain your phone to 60% instead of 50%. To take full advantage of the chemistry, it is best to fully charge before discharging. You could expect 2500-3000 cycles at 10% depth of discharge, but only 500-700 or so at 50% depth of discharge before capacity is 70% of what it's rated. This is information I got from Cadex Labratories and deal with on a daily basis at work.
Click to expand...
Click to collapse
Should I follow this suggestion? Or keep small cycle of charges by using accubattery suggestion to plug off when I reach 80%?
Or should I just teach my Battery Care to learn my overnight charging habit and then make use of it when I can? (ie turning it off when I make small charge on the afternoon)
Xperia1 has the revamped battery care settings in which people can input their desired time for the feature to work.. I hope they update ours to work the same way....

Sp12er said:
Should I follow this suggestion? Or keep small cycle of charges by using accubattery suggestion to plug off when I reach 80%?
Or should I just teach my Battery Care to learn my overnight charging habit and then make use of it when I can? (ie turning it off when I make small charge on the afternoon)
Xperia1 has the revamped battery care settings in which people can input their desired time for the feature to work.. I hope they update ours to work the same way....
Click to expand...
Click to collapse
You can use the app "battery charge limit"
It just deactivates the charging at the desired hysteresis.
Keep in mind that the discharge is slightly higher with a connected USB device, because only the charging is deactivated, not the USB port.
(Needs root)
I charge every of the devices I maintain since years to 80% and the battery is still fine.

For me battery care works fine, i plug muy Xz2 at the same hour every night, so i dont have complains

I don't know when they added it, but you can finally set a custom Time
Fkn AI Learning didn't work at all...
And it seems to work pretty fine

Battery care not detected time in xperia xz1 G8342
My Xperia xz1 battery care not detected time. many times I am trying but it not working.

Question Battery protection experience

To those that have use the phone for a year what is your battery health percentage without battery protection and with battery protection, im just trying to see if using the battery protection is worth it or not

There is no question concerning battery protection, if you use a device with a lithium ion battery and only use it between 30 and 80 % this will greatly extend the useful life of the battery. Using a smartplug and software to control the charger plugged into it, I have a five year old Pixel phone with a battery health percengage above 85% that’s still working fine.
I only wish that Samsung’s battery protection option was 80% instead of 85%, which would better enhance battery life.

Almost a year with the phone (10 months), always used the battery protection. Stock One UI 5.1, Snapdragon version.
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1. Never used battery protection feature because I always charge my phone to 100% and keep it connected for another 5 minutes or so.
2. I don't use Adaptive Battery feature either because I haven't seen any benefits from it.
3. Lots of theories on keeping the phone battery between some range. I don't follow it because benefits from such practices are insignificant during the expected ownership life of the phone (about 5 years on average).

I turned off battery protection 1 year ago and never looked back. Today, at 100% charge it says I have 1d19h of charge remaining. I charge my phone to 100% every night while I sleep. I see no difference in my battery performance at all.

evertroy said:
I turned off battery protection 1 year ago and never looked back. Today, at 100% charge it says I have 1d19h of charge remaining. I charge my phone to 100% every night while I sleep. I see no difference in my battery performance at all.
Click to expand...
Click to collapse
As I previously stated, self implemented battery protection on several phones I have owned made a huge difference for me. Charging to 100% every night left me with a very noticeable decrease in battery capacity within a year and a half or so. Maintaining the battery between 30 - 80% produces a night and day difference in battery endurance. I still own a Pixel 2XL that has never been charged to 100% and the battery capacity is around 85% and the phone still works great.

According to Accu Battery my S22U was at 99% after 1 year of charging to 85%. I never used wireless fast charging and kept the charge between 35 - 85%.
Everyone has an opinion on this. I have no problem getting 2 days of use charging to 85% so why charge to 100%.

neilth said:
There is no question concerning battery protection, if you use a device with a lithium ion battery and only use it between 30 and 80 % this will greatly extend the useful life of the battery. Using a smartplug and software to control the charger plugged into it, I have a five year old Pixel phone with a battery health percengage above 85% that’s still working fine.
I only wish that Samsung’s battery protection option was 80% instead of 85%, which would better enhance battery life.
Click to expand...
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You can set battery protect to turn on at whatever battery percentage utilizing Samsung Routine. I did this for a while at 90%, but have since turned it off as I will most likely upgrade my phone by next year.

I use battery protection overnight and whenever I need my phone connected. Ex: Android Auto.

neilth said:
As I previously stated, self implemented battery protection on several phones I have owned made a huge difference for me. Charging to 100% every night left me with a very noticeable decrease in battery capacity within a year and a half or so. Maintaining the battery between 30 - 80% produces a night and day difference in battery endurance. I still own a Pixel 2XL that has never been charged to 100% and the battery capacity is around 85% and the phone still works great.
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How big of a difference are we talking here, before i use my S22U i have an Oppo F9 which still have good battery despite charging it too 100% every day for 3 years but that's probably because the SoC isn't very strong to begin with so it doesnt use that much power, while my phone before that which is an iphone 6 that is a hand me down and collectively used for 4 years have really bad battery where i have to charge 2-3 times despite only using it for messaging and youtube
the reason i really care about the battery health on this phone is because of how expensive this phone is compared to the other phone i have in the past and i do plan to use it for a long time

chris2412 said:
How big of a difference are we talking here, before i use my S22U i have an Oppo F9 which still have good battery despite charging it too 100% every day for 3 years but that's probably because the SoC isn't very strong to begin with so it doesnt use that much power, while my phone before that which is an iphone 6 that is a hand me down and collectively used for 4 years have really bad battery where i have to charge 2-3 times despite only using it for messaging and youtube
the reason i really care about the battery health on this phone is because of how expensive this phone is compared to the other phone i have in the past and i do plan to use it for a long time
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In the past I have had a Sony Z2 and a Nexus 6P both suffer drastic battery degradation in under two years by fully charging them every night. With my next phone, a Pixel 2XL, I started using a smart plug which I configured to be controlled by software monitoring the battery charge and turning off the battery charger when charging reached 80%. After five years, this phone is still operational and its battery health is above 80%. I am now using similar technology on my S23U.

TheMystic said:
1. Never used battery protection feature because I always charge my phone to 100% and keep it connected for another 5 minutes or so.
2. I don't use Adaptive Battery feature either because I haven't seen any benefits from it.
3. Lots of theories on keeping the phone battery between some range. I don't follow it because benefits from such practices are insignificant during the expected ownership life of the phone (about 5 years on average).
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Been Warp Charging my OnePlus 8T at full speed for 2.5 years now, often charging it twice a day. Battery life is fantastic and so is it's health. Practical experience taught me that some of the theories may be true, but have little practical application. One must NOT bother too much with these things as they ruin user experience.

neilth said:
In the past I have had a Sony Z2 and a Nexus 6P both suffer drastic battery degradation in under two years by fully charging them every night. With my next phone, a Pixel 2XL, I started using a smart plug which I configured to be controlled by software monitoring the battery charge and turning off the battery charger when charging reached 80%. After five years, this phone is still operational and its battery health is above 80%. I am now using similar technology on my S23U.
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Could you share a link of the smart plug you're using?

I've never used Battery Protect. I charge my phone over night to 100%. I use wireless charging almost exclusively. By the time I leave work, it is at around 78%. I have it set to best performance.
I've taken it on the road several times and always had enough juice to make it to my hotel after 10 hours of traveling.
I haven't noticed any battery degradation.