Q: Are you supposed to let them drain all the way down before you recharge, or top them off every night? What works best?
A: The batteries are lithium-ion. They do not suffer from charge memory, and should not be allowed to fully discharge if you can help it. I usually charge mine when I get down to about 20-30%, or right before I know I’m going to out and about and using it heavily.
When the battery gets down to about 15%, it is too low to power the radio, and the device will disable all wireless data communications until the battery is recharged. (I do not remember if this also disables the phone function; I would think it would.)
