Re: Keeping batteries charged no more than 80%

On 2024-03-12 01:23, micky wrote:

If it's considered proper to charge a cellphone only to 80%, what about
other devices that use batteries.  Today I got a rechargeable bluetooth
speaker to use with my cellpphone, and the instructions say to charge
it, until the red light turns blue.  Isn't that 100%, not 80%.  Am i
damaging the speaker battery by charging it until the liught turns blue?

On most devices, you have no control.

For that matter, what about people who leave their phone plugged into
the charger or sitting on the wireless charger all night?   Doesn't it
go to 100% and sit there, still charging even after it's reached 100%.

Most devices will limit the charge, probably stopping it.
My Motorola G52 detects that it is an overnight charge, and calculates an strategy to have it fully charged by the time the alarm goes off. Initially, it charges up to 80% and holds there, then charges the remaining 20% just in time. And it knows the capacity of the USB charger you are using. It knows I am using an 1U, thus it will charge slowly always.
If I try to charge it at a different time of day, it will charge as fast as it can to 100%.
So, it will depend on what the makers of your phone decided for you.
--
Cheers, Carlos.