things
New Member
Hi guys. I recently bought a new laptop battery, since my old one had 3 mins life after being disconnected from the power. So I decided to rip the old one apart. They seem to still have a 4V charge under no load. They look like a oversized AA, and seem to have built in protection circuitry. Anyone know how I could build a charger that would safely charge these things? I know they are slightly dead, but they re still holding a charge pretty well. Here is a pic of it next to a normal AA
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