A little more info:
This is for a phone, specifically a Galaxy S20+ 5G. It is rooted.
I have 2 sysfs files I can control.
/sys/class/power_supply/battery/batt_slate_mode <- allows for complete control over charging
/sys/class/power_supply/battery/hv_charger_set <- sets if the charger is "high voltage"
I've been using this app: GitHub - sriharshaarangi/BatteryChargeLimit to set my voltage between 75 and 80%. The purpose of this is to prolong the battery life as I use Samsung Dex all day (not good to have it plugged in all day). This means when it reaches 80% charging stops. When it hits 75% charging resumes.
If however, I set the "hv_charger_set" value to 0, it basically activates a trickle charge. Whatever percent my battery was at when I set that file value to 0 it will stay at.
So say I hit 80% charge and I set "hv_charger_set" to 0, now all day my battery will be trickle charged and stay at 80%. Watching the charging amps, it basically pulses (almost like PWM) a small current ~9-15mA.
In terms of battery longetivity - which option is better:
1.Turn off charging at 80% and charge at high current from 75% to 80%
2. Turn on a trickle charge at 80% and charge at ~9-15mA all day to maintain the 80%
I have read that trickle charging is not good for the LiOn battery. However, these statements do not fall under my context - battery at 80%. They refer to the battery being at 100%.
I have also read that small currents to the battery are healthier than larger currents.
I also think Samsung engineers are using this trickle charge when the battery is at 100%, as even monitoring sysfs files I do not see the voltage drop.
I have also noticed my phone/battery stays way cooler at the trickle charge, which the general consensus is heat ruins batteries.
As you can tell, I am very confused/torn as to what is "healthiest" for my battery. I keep my phones for about 5ish years and my previous ones have definitely suffered battery life issues. Even if I do get a new phone, I like to keep my current one in pristine condition for the next person.
All advice is greatly appreciated and may ask extra questions to better understand the advice given. Thanks all!
This is for a phone, specifically a Galaxy S20+ 5G. It is rooted.
I have 2 sysfs files I can control.
/sys/class/power_supply/battery/batt_slate_mode <- allows for complete control over charging
/sys/class/power_supply/battery/hv_charger_set <- sets if the charger is "high voltage"
I've been using this app: GitHub - sriharshaarangi/BatteryChargeLimit to set my voltage between 75 and 80%. The purpose of this is to prolong the battery life as I use Samsung Dex all day (not good to have it plugged in all day). This means when it reaches 80% charging stops. When it hits 75% charging resumes.
If however, I set the "hv_charger_set" value to 0, it basically activates a trickle charge. Whatever percent my battery was at when I set that file value to 0 it will stay at.
So say I hit 80% charge and I set "hv_charger_set" to 0, now all day my battery will be trickle charged and stay at 80%. Watching the charging amps, it basically pulses (almost like PWM) a small current ~9-15mA.
In terms of battery longetivity - which option is better:
1.Turn off charging at 80% and charge at high current from 75% to 80%
2. Turn on a trickle charge at 80% and charge at ~9-15mA all day to maintain the 80%
I have read that trickle charging is not good for the LiOn battery. However, these statements do not fall under my context - battery at 80%. They refer to the battery being at 100%.
I have also read that small currents to the battery are healthier than larger currents.
I also think Samsung engineers are using this trickle charge when the battery is at 100%, as even monitoring sysfs files I do not see the voltage drop.
I have also noticed my phone/battery stays way cooler at the trickle charge, which the general consensus is heat ruins batteries.
As you can tell, I am very confused/torn as to what is "healthiest" for my battery. I keep my phones for about 5ish years and my previous ones have definitely suffered battery life issues. Even if I do get a new phone, I like to keep my current one in pristine condition for the next person.
All advice is greatly appreciated and may ask extra questions to better understand the advice given. Thanks all!