Regarding the longevity of the Joy-Con batteries, is it OK to leave the Joy-Cons on the charging dock once they are fully charged (green light)? OR is it better to detach them, once charged, until the next game?

Question

Accepted Answer

Normally, any device with a battery should be unplugged when it is fully charged. We therefore advise you to unplug your joy-cons after charging them, in order to preserve the battery life :)

Answer

Hello,
Personally we always leave them on since purchase in October 2018. 
Never had a problem to date.
Except for one LED (Out of 4) on the charger that has never worked.

Your data. Your choice.

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Question about PowerA Joy-Con Charging Dock

Regarding the longevity of the Joy-Con batteries, is it OK to leave the Joy-Cons on the charging dock once they are fully charged (green light)? OR is it better to detach them, once charged, until the next game?