Sometimes you need a power supply that can be thrown into the back of a car and taken into the field. [BadWolf] didn’t want to take his bench supply, so he whipped up this very portable power ...

Power tool batteries are a convenient portable power supply for all manner of different ... The design also features a lithium-ion battery protection circuit of [Zachary]’s own design, to ...

Powering the BOSS Katana Air EX is a wall power supply or batteries you must provide yourself. I like that it is portable and that you can use batteries. But I would have liked to see the battery ...