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 ...
The Portable Power Box from Makinex is an emission-free power solution that provides 6 kw of continuous output power combined with up to 15 kWh of battery capacity. The Power Box charges in seven ...