[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 ...

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 ...

Which ammo cans are best? Any responsible weapons owner knows that ammunition must be locked away in a safe place and out of reach of unauthorized people. The most effective way to do this is to place ...