On Tuesday, March 3, 2015 at 11:49:06 AM UTC-5, Lord Bergamot wrote:

I always had to let the battery get down below 20% before plugging
in the charger, to keep it working good, and if I unplugged it before it
was fully charged it started having problems.

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:-)
Don't let the Zombies get you!!!!

How old is this thing? "Memory" issues on rechargeable batteries, to whatever extent they existed, were solved decades ago.