A mobile charger for a game controller includes a printed circuit board supporting a universal serial bus plug at one end of the board and a charging plug at the opposing end, the board further supporting a rechargeable battery, a housing body including a base form having an internal volume and a top plate, the housing body including opposing openings for the USB plug and the charging plug, the top plate including a mounting location for mounting the PCB, the top plate aligned over and mountable to the base form. The USB male plug may be inserted into a female USP port to receive a and whereby the male charging plug may be plugged into a female charge port on the wireless game controller to offload the charge in the rechargeable battery to the wireless game controller rechargeable battery while the controller is use during game play.