Revive your tired Dremel battery pack

battery-pack-replacement

It turns out there's nothing more than six Nickel Cadmium AA rechargeable batteries inside of that cordless Dremel battery pack. Yep, standard rechargeable AA's that you can buy most anywhere, and now you can revive that aging battery pack by following [Stuuf's] guide. Since you're already at it, a few more bucks will yield a real upgrade by using the superior Nickel Metal Hydride batteries which … [Read more...]

Zap new life into Ni-Cads

nicad_zap

Apparently you can revive dead Ni-Cad batteries by zapping them with high voltage. Some people have used welders in the past, but many of us just don't have access to one. This project shows you how to hack a disposable camera into a battery revival device. This could be very cost effective. A single regular AA battery could revive many Ni-Cads. Remember, this doesn't charge them, just makes them … [Read more...]