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 ...

D.C. Officers say they recovered a semi-automatic firearm with 50 rounds of ammo, leading to the arrest of three people. The identities and ages of the arrested individuals have not been released.