Today we’re going to be looking at some laptop batteries, we’re going to take them apart and attempt to salvage some lithium cells to use in other projects.
I have these two identical batteries coming from a Fujitsu Siemens laptop and they’re both dead. These batteries usually fail in one of two modes, they either have a failed electronics board and in this case they don’t communicate with the laptop motherboard anymore for correct management or they have one or more lithium cells failed and they don’t reach their nominal voltage anymore.I believe these two are in the second category where one or more cells have failed and they don’t reach their nominal voltage anymore.