The six volt lantern battery on the left has four cells inside of it. ... I’ve soldered the terminal end removed from a dead 9 volt battery to the output of a 9 volt wall wart.

Of course, you could probably use a lantern battery if you wanted something that would last longer. ... Posted in Tool Hacks Tagged 9V battery, cutter, foam cutter. Post navigation.

Building a portable lamp with a 9V battery and LED bulb is a simple, creative DIY project that anyone can try. This video provides clear, step-by-step instructions for assembling a functional lamp ...

Sean Michael Ragan at Make wanted an easy way to turn off his own projects without having to disconnect the whole battery. He couldn’t find a 9V power switch to buy, so he made one himself. To ...