Here’s the reason why: Li-Ion batteries spend most of a charge cycle in an almost flat region. Simple battery gauges just read the voltage, so “Battery Low” happens shortly before it dies.
The limits of the curve are a high stress situation for the chemistry inside, I’m not exactly sure about the mechanism, so take it with a few grains of salt.
Essentially there’s some growths (I think they’re called dendrites) forming slowly, all the time the battery is flowing charge. But it happens more quickly under adverse conditions, like the extreme ends of the voltage/charge spectrum…
Here’s the reason why: Li-Ion batteries spend most of a charge cycle in an almost flat region. Simple battery gauges just read the voltage, so “Battery Low” happens shortly before it dies.
Neat, I didn’t know there was an actual reason for it!
Is this also why people say that keeping your charge levels between 20 and 80% extends your battery life?
The limits of the curve are a high stress situation for the chemistry inside, I’m not exactly sure about the mechanism, so take it with a few grains of salt.
Essentially there’s some growths (I think they’re called dendrites) forming slowly, all the time the battery is flowing charge. But it happens more quickly under adverse conditions, like the extreme ends of the voltage/charge spectrum…