this post was submitted on 16 Feb 2024
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[–] [email protected] 49 points 8 months ago (8 children)

Any way to tell? I just got a monster phone with a 22K mAh battery.

[–] [email protected] 68 points 8 months ago (2 children)

For Android, there are a multitude of apps, such as Wattz that will tell you the actual voltage of the battery. Full may be 4.2V or 4.35V depending on the chemistry used. ACCA (root required) will let you limit charge rates and stop charging at a certain percentage.

Staying under 4 volts (around 60% for most phone batteries) will vastly extend battery service life. 80% is a bit less extension, but still far better than charging to 100%.

[–] [email protected] 16 points 8 months ago* (last edited 8 months ago) (1 children)

i was looking for something like acca since forever

foss discoverability needs some mad work

[–] [email protected] 5 points 8 months ago (1 children)

that doesn't answer the question of whether there's a way to tell that their battery is limited to 80% on hardware level, though.

[–] [email protected] 2 points 8 months ago

Unless it's lying about the voltage itself, you can be pretty sure it's not limited if it charges to 4.35V. 4.2 is a little more tricky if you don't know for sure whether 4.2 is the full voltage for the cell.

[–] [email protected] 19 points 8 months ago (5 children)

That's one hell of a battery

What phone is that‽

[–] [email protected] 12 points 8 months ago

I don't know, it says "Heavy duty" on the side.

[–] [email protected] 7 points 8 months ago* (last edited 8 months ago)

Apparently the name is Doogee V Max EDIT: or Unihertz Tank

[–] [email protected] 3 points 8 months ago

Late reply:

https://oukitel.com/pages/oukitel-wp33-pro

This replaces my old phone, Bluetooth speakers, battery banks, all that. Hella heavy, but so is all that other crap. I can drop it 5' deep in the swamp, go down and get it. Still testing!

[–] [email protected] 10 points 8 months ago

Jesus Christ that's a car battery

[–] [email protected] 9 points 8 months ago (1 children)
[–] [email protected] 2 points 8 months ago

k = 10^3 and m = 10^-3 so they will cancel out. It’s just Ah without any prefixes at that point.

[–] [email protected] 5 points 8 months ago (1 children)

Charge it from a smart power supply from battery at 1 to 100% then it can show you the number of mah/h it took to charge it.

I have this power supply which also has USB-C https://a.aliexpress.com/_mrChiQ6

[–] [email protected] 6 points 8 months ago

Not sure how accurate this would be as charging is not 100% efficient. Also the amount of power the phone uses while charging would have to be taken into account as well.

[–] [email protected] 5 points 8 months ago

My phone has a 10.8Ah battery and it's huge, no idea how big that must be.

[–] [email protected] 2 points 8 months ago

22Ah at 4.35V would be 96Wh, which iirc is just under the limit of 100Wh you can take on flights in the us, and thus the limit for basically all laptops.

[–] [email protected] 1 points 8 months ago

mAh are a terrible way to measure capacity, look for watt-hours instead. You need to know the voltage for it to be a relevant measurement