# Rechargeable battery

**URL:** <https://boards.straightdope.com/t/rechargeable-battery/532730>\
**Category:** Factual Questions\
**Created:** [March 17, 2010, 4:41am UTC](https://boards.straightdope.com/t/rechargeable-battery/532730 "2010-03-17T04:41:37Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Johnny\_L.A](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/johnny_l.a/32/1084_2.png) [@Johnny\_L.A](https://boards.straightdope.com/u/Johnny_L.A)\
**Post date:** [March 17, 2010, 4:41am UTC](https://boards.straightdope.com/t/rechargeable-battery/532730/1 "2010-03-17T04:41:37Z")

</div>

I have an electric shaver I use occasionally. I tend to keep it plugged in, unless I happen to remember to unplug it. A few weeks ago I noticed it was hot. I unplugged it then! The LED was red, indicating the charge was low. It ran slowly when I tried the button. The next morning it was completely dead. I assumed a faulty battery. I found that it would run if it was plugged in, and that it no longer got hot. I left it plugged in, and now the LED happily blinks green. It’s not getting hot, and it’s holding a charge.

Something wonky with the battery? Or does the shaver (a cheap Braun) have a discharge cycle, and after five years or so I just happened to catch it this time?