puffy joycon batteries?

[ave1989]

after not using my joycons for months and them not being charged at all for months i did a shell swap on my joycons today and i noticed this:




anyone knows if its normal for joycon batteries to be this fluffy? i can also wiggle them when i put them flat on my table

 

[ROGsamurai]

its a sign of overcharging to be honest. If not then they may have come from factory like this

 

[hippy dave]

I've never noticed it on mine, and in general puffy batteries are bad. I'd replace them to be safe.

 

[linuxares]

Oh Spicy Pillows!
Please put them for recycling. They expand to avoid a fire, so something is damaged in them.