[Sohcahtoa82]

>> Do aged lithium batteries lose charge efficiency, discharge efficiency or capacity?

> I believe they experience all of those.

Hmm...would that explain the CPU performance loss of an aging cell phone battery? Lower discharge efficiency = less power available for the CPU = CPU throttles itself to lower power usage?

[geon]

That is exactly what happened, yes. Without the throttling, the battery can't deliver peak power, and the device crashes.