For the price of a mid-range Android phone, [Kenneth Finnegan] turned a 50 caliber ammo can into a 50 amp-hour portable power supply. The battery pack uses four 3.5 V LiFePO 4 cells wired in series to ...
[Brandon Fiquett] does a lot of amateur radio communications and needed a rugged portable power supply that he could take with him on the road. He decided to make a 12V power supply out of an antique ...
It’s heavy, it’s tough to open, and it was never meant to be a lunch box. But if you want to be a badass, this ammo case is way better than any mamby-pamby Care Bears thermos. The rattle and clank of ...
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