PSA: Check your battery operated devices RIGHT NOW (especially if you own a collection), they may be very well discharged right now and could very well be puffing (spicy pillows).

If they aren't puffing, charge them to around 50%. This slows down degradation.

If your battery is puffing, you might be able to find a place where they will recycle the battery.

You may also want to check to make sure the device is still working.

Boosts would be very appreciated.