Do cellphones use battery power when powered off?
If I left my cellphone powered off overnight or for a week would the battery still have the same charge when I turned it back on?
There is an auto power off/on function or a full power off, does it make a difference to battery charge?
- spacemissingLv 71 month ago
Everything makes a difference.
Shut it off completely to increase the charge holding time.
All batteries self-discharge,
so it will go down at least a little bit over time no matter what.
- Memelord PrimeLv 71 month ago
Lithium-ion batteries drain a very small amount even when they're sitting unused, which is why that old phone or whatever that's in your junk drawer doesn't turn on when you take it out a year later.
They average about 2-3% of self-discharge a month. So a phone with a healthy battery would maybe be a percent or two lower than when it was last turned on after week without use.
- Donnie PorkoLv 71 month ago
It should have the same charge if you power it off completely.
If it’s on standby, you might lose all power after about a week.