61Wh battery became spicy in less than a year

[Charlie_6]

@Jorg_Mertin

I would rather check on the usage.
Batteries tend to expand when maxed charge in a warm environment, and then stored in a cold environment.
The battery chemistry can’t hold the same charge on lower temperatures. The excess energy has to go somewhere in that case.

Best is to make sure the battery is not charge above 85% when going out and exposing it to cold temperatures.

EDIT: outdated

@PSA: 61Wh battery pillowed 1y 3mo from purchase

101.1%

@Chris_Xiong

last full capacity 3581 mAh = 91%

If the battery swollen despite low wear(low % capacity loss). It may be useful to use mechanical restraints to physically prevent the battery from swelling.

Here’s an example of an RC hobbyist 11.1V lithium polymer battery.

Notice the thin layers on the top and bottom of the battery pack, they are metal plates to prevent the battery cells from swelling.
This might also explain that why cylindrical cells like 18650 and 21700 outlast pouch cells

Note: the above is a generic advice to battery manufacturers, DO NOT attempt DIY battery/cell structure as doing so might damage it further, causing injury.