My ipod & Laptop batteries are usually to flat for the device to turn on within a few months sitting in storage. I usually charge them up & store them. When I need them in 1-3months they are flat.
Are they getting drained just by sitting in the laptop even if it’s off?
If they were stored out of the laptop, would they retain most of their charge after months of storage? I will try this but wanted to ask.
I also think my cordless drill batteries do this too sitting in the drill. Certainly but 3-4months they are dead.
If you know you won’t be needing the device for a few months charge it to 50%, take the battery out and put it in the freezer. This maximizes battery life. Let the battery get back to room temp before re-installing.
Li-ion batteries do not like being charged to 100% for extended periods of time. Nor do they like being at 0% (even briefly). Both can cause degradation in performance/life.
But fully charging it and storing it for months shouldn’t, by itself, cause a noticeable degradation in performance/life.
If you are battery is full after being charged 100% and stored for months, and find the battery is completely flat, it’s because the device uses a tiny amount of power even when it’s turned off.
Depends on what the charger considers 100%. There is no absolute definition on what a “full charge” is on a Li-Ion battery. If you define full charge as 4.10V per cell it will have a very long life. If you define it as 4.20V (more typical) it will have a shorter life (but 10% more capacity per charge).
A Li-Ion cell charged to 4.20V and stored will show noticeable degradation within months.