[matt-p]

I am surprised a serious facility would be happy having 100 old LiPo batteries in a rack. That is a (nasty) fire waiting to happen IMO. These are old batteries that may even have minor physical damage from being dropped and will be in maybe a ~25-30c environment.

[qmr]

Laptop batteries are lithium ion not lithium polymer.

[matt-p]

Sometimes, but usually polymer these days. e.g the most popular laptop is probably a macbook https://www.apple.com/uk/macbook-pro/specs/ https://www.apple.com/uk/macbook-air/specs/