Quote:
Originally Posted by sirmaru
I have a Garmin GPS unit which has discharged to zero percent many times and the battery still works fine after 2 years.
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Many Lithium based battery devices misreport the charge level intentionally, so the unit's 0% reading / automatic shutdown is really 10-15% of actual battery left.
I'd be surprised if any name-brand device let you actually discharge to literal zero.
People are much more likely to shorten the battery life by keeping it pinned at 100% all the time than by fully discharging.