Charge Limiting to Extend Battery Life

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MyronAz

Senior Member
Sep 28, 2013
59
13
Limiting the battery charge to a fraction (70%-80%) of it's full capacity is a well known way to greatly extend the battery's charge capacity lifetime. There are several (root) apps created to automate this, that stop the phone from charging once a selected charge level is reached. Battery Charge Limit is one (https://forum.xda-developers.com/android/apps-games/root-battery-charge-limit-t3557002), ACCA is another (https://github.com/MatteCarra/AccA/). So far I have not been successful getting either of those to work with the ROG2. I was wondering if anybody has had any success with those apps or any other way to limit the battery charge on the ROG2?
 
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Jake.S

Senior Member
Oct 9, 2017
295
41
Stockholm
The Rog phone 2 has its own function that lets you automatically stop charging.

But keep in mind this function is only useful if you are planing to keep the phone connected to a charger 24/7 then it's useful. Otherwise it's worthless if you disconnect your phone once it's 100% charged.

Battery also needs to discharge and recharge to keep it's capacity and function going. If you don't do this it can wear the battery out even if you stop charging at 70-80%.
 
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MyronAz

Senior Member
Sep 28, 2013
59
13
The Rog phone 2 has its own function that lets you automatically stop charging.

But keep in mind this function is only useful if you are planing to keep the phone connected to a charger 24/7 then it's useful. Otherwise it's worthless if you disconnect your phone once it's 100% charged.

Battery also needs to discharge and recharge to keep it's capacity and function going. If you don't do this it can wear the battery out even if you stop charging at 70-80%.

Most of what you said is wrong.

The ASUS Power Master Battery Care feature slows and delays the charging but still charges to 100%. The feature is only useful if you have a regular charge schedule (which I don't, and DO mostly leave the phone on the charger) and even then, it's still charging to 100%. Repeatably charging a LiPo battery to 100% WILL decrease it's capacity significantly faster than if only partially charged. All phones already slow charging at high charge levels. There is no advantage to discharging the battery.

Read and learn: https://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries

If you can reference any authority to support your position, I'd love to see it.
 

Jake.S

Senior Member
Oct 9, 2017
295
41
Stockholm
Most of what you said is wrong.

The ASUS Power Master Battery Care feature slows and delays the charging but still charges to 100%. The feature is only useful if you have a regular charge schedule (which I don't, and DO mostly leave the phone on the charger) and even then, it's still charging to 100%. Repeatably charging a LiPo battery to 100% WILL decrease it's capacity significantly faster than if only partially charged. All phones already slow charging at high charge levels. There is no advantage to discharging the battery.

Read and learn: https://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries

If you can reference any authority to support your position, I'd love to see it.
Did you ever know that even authority can be wrong in facts as well? I can confirm that battery feels alot better with discharge and charge than what it is with 100% all time or 70-80%.

How I can confirm is that I have a Microsoft surface Pro 4 and when I kept it on charger at 100% for a day or two the wear level jumped from 0% to 3% but when I discharged it and recharged it after some time then tear level on battery went back to 0% and capacity was back to its full capacity again. So discharge and recharge does not always wear the battery out. It actually makes battery feel better too.

So please don't always believe what internet and what authority States. Since on internet there is alot of false facts and authority gives alot of nonsense facts alot of times too.
 
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willhemmens

Senior Member
Nov 17, 2010
323
131
Is it really wise to basically degrade your battery by 20% out of the box just so you can have 95% in 2 years? If anything, heat is the greatest factor for degradation. If you're that worried, just use a 2 Amp charger.

Wise? Absolutely. Is it the perfect solution for everyone? No
 

MyronAz

Senior Member
Sep 28, 2013
59
13
Is it really wise to basically degrade your battery by 20% out of the box just so you can have 95% in 2 years? If anything, heat is the greatest factor for degradation. If you're that worried, just use a 2 Amp charger.

Yes, heat is a factor, but keeping the battery at 100% will degrade the battery faster regardless. If you simply do not need the additional 20% than there is no advantage to charging to 100%. My usage scenario is that the phone is plugged in a lot of the time and I very rarely need the full battery capacity. I've had several phone batteries bloat up under this scenario (and not using any fast charging).

When batteries degrade they don't stop at 80%. They generally keep degrading fairly rapidly. And you don't just lose capacity, as the battery degrades the internal resistance increases, which results in throttling and/or crashing.

BTW on some phones, ACCA will stop charging the battery when it reaches the desired charge level and run the phone entirely from external power.
 
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Mr_Mooncatt

Senior Member
Sep 13, 2019
151
31
Wise? Absolutely. Is it the perfect solution for everyone? No

Agreed. If manufacturers still offered replaceable batteries in their flagships, this would be somewhat of a moot point. When dealing with a sealed battery that is expensive and time consuming to replace, it's wise to do everything reasonable to protect the overall lifespan of it.

As for keeping it charged at 100%, I did that once and killed a battery in about 6 months. Not doing that one again.
 

asdor

Member
Mar 9, 2007
13
4
Guys, it's so nice you are debating over the battery charging metaphysics but it does not help us solve the issue: our rooted phone can not be charged in a smart way using magisk+acc, ACCA or Battery Charge Limit.
Any ideas?
 

Himan99

Senior Member
Aug 29, 2017
203
10
I'm facing issue with my Rog 2, my phone is not charging fast
1. I'm using 18w charger come with the phone to charge
2. I have used Xiaomi 2i power bank with 18w output to charge my phone (still not working)
3. I restart the phone on charging it goes down 36% to 29%
4. On charging when i restart the phone it goes 8% to 13%
5. I'm facing this problem from the yesterday
6. Double plus sign on battery icon as well as fast charging text on home screen is also not showing while charging

What is the issue please help anyone
 

Einheit-101

Senior Member
Jul 4, 2013
350
48
Submit a bug report to acca and maybe at least someone starts caring for the ROG Phone. The reason why it doesnt work is simply because ASUS does its own stupid thing while charging (thats what happens when 100 OEMs cook their own soup, a mess).
About the battery health:
A battery keeps its best health when its charged between 25-75%, is kept below 30°C and charged as slow as possible. Thats why its wise to stop charging at 80% with a slow charger, especially when you have a big battery anyway that lasts for a day with 80% charge.
 

apollo3x

Senior Member
Dec 6, 2014
861
224
New Delhi
I'm facing issue with my Rog 2, my phone is not charging fast
1. I'm using 18w charger come with the phone to charge
2. I have used Xiaomi 2i power bank with 18w output to charge my phone (still not working)
3. I restart the phone on charging it goes down 36% to 29%
4. On charging when i restart the phone it goes 8% to 13%
5. I'm facing this problem from the yesterday
6. Double plus sign on battery icon as well as fast charging text on home screen is also not showing while charging

What is the issue please help anyone

currently facing the same issue and this is the first time in 2 week time. though on the lock screen, it shows fast charging.. but it isnt working smh
 
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Himan99

Senior Member
Aug 29, 2017
203
10
currently facing the same issue and this is the first time in 2 week time. though on the lock screen, it shows fast charging.. but it isnt working smh

Change the cable and try also try with different fast charging adapters or fast charging powerbank(mi power bank)

My problem solve by changing the cable

---------- Post added at 03:55 AM ---------- Previous post was at 03:54 AM ----------

Limiting the battery charge to a fraction (70%-80%) of it's full capacity is a well known way to greatly extend the battery's charge capacity lifetime. There are several (root) apps created to automate this, that stop the phone from charging once a selected charge level is reached. Battery Charge Limit is one (https://forum.xda-developers.com/android/apps-games/root-battery-charge-limit-t3557002), ACCA is another (https://github.com/MatteCarra/AccA/). So far I have not been successful getting either of those to work with the ROG2. I was wondering if anybody has had any success with those apps or any other way to limit the battery charge on the ROG2?


Without root any chances

Because i don't want to root my phone
 

MyronAz

Senior Member
Sep 28, 2013
59
13
Without root any chances

Because i don't want to root my phone

There is no programmatic way to internally control the charging process without root, however there are some (not as good) alternatives.

First there is an app Accubattery that will give you a notification when the battery reaches a given level, you have to then disconnect the charger manually.

A second way to do this would be to use a smart plug and control it with Tasker. Don't know if anyone has done this but it should be possible.

Another possibility that is not vailable yet would be a kickstarter project called BatteryPal. This is a charging cable that had a bluetooth interface built in to it that would control charging using an app on the phone.They arr saying it will be available March 2020, but who knows.
 
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Mike845

Member
Nov 30, 2019
21
1
I'm facing the same situation here. I'm next to a charger most of the time, so I like to use slow charging and not going above 80%. I was used to have battery charge limit installed in all my devices, but found this is not working with the rog phone.
 

gabi.ailincai

Senior Member
Mar 30, 2018
116
24
Iasi
I've also just tried ACC and Battery Charge Limit, but neither worked. It looks like there is something that keeps overwriting the charge control file all the time and allows the battery to charge anyway. Battery Care was disabled while doing this.

I am rooted, so I am able to test any potential solution.
 

Kianush

Senior Member
Jan 4, 2014
690
97
Does anyone know of a legit charging adapter that isnt fastcharge and doesnt damage the phone or gets damaged itself after a while? I want to charge my phone without fastcharge but cant find a good charger

My old htc m8 charger got damaged after just a few times of using! Seems like the phone drained it dry
 

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    Limiting the battery charge to a fraction (70%-80%) of it's full capacity is a well known way to greatly extend the battery's charge capacity lifetime. There are several (root) apps created to automate this, that stop the phone from charging once a selected charge level is reached. Battery Charge Limit is one (https://forum.xda-developers.com/android/apps-games/root-battery-charge-limit-t3557002), ACCA is another (https://github.com/MatteCarra/AccA/). So far I have not been successful getting either of those to work with the ROG2. I was wondering if anybody has had any success with those apps or any other way to limit the battery charge on the ROG2?
    1
    I'm facing issue with my Rog 2, my phone is not charging fast
    1. I'm using 18w charger come with the phone to charge
    2. I have used Xiaomi 2i power bank with 18w output to charge my phone (still not working)
    3. I restart the phone on charging it goes down 36% to 29%
    4. On charging when i restart the phone it goes 8% to 13%
    5. I'm facing this problem from the yesterday
    6. Double plus sign on battery icon as well as fast charging text on home screen is also not showing while charging

    What is the issue please help anyone

    currently facing the same issue and this is the first time in 2 week time. though on the lock screen, it shows fast charging.. but it isnt working smh
    1
    Without root any chances

    Because i don't want to root my phone

    There is no programmatic way to internally control the charging process without root, however there are some (not as good) alternatives.

    First there is an app Accubattery that will give you a notification when the battery reaches a given level, you have to then disconnect the charger manually.

    A second way to do this would be to use a smart plug and control it with Tasker. Don't know if anyone has done this but it should be possible.

    Another possibility that is not vailable yet would be a kickstarter project called BatteryPal. This is a charging cable that had a bluetooth interface built in to it that would control charging using an app on the phone.They arr saying it will be available March 2020, but who knows.