A portable power storage and supply system having means for AC charging, DC charging, AC discharging and DC discharging wherein any one or any combination of the AC and DC charging and discharging can be carried at one time. The system includes an inverter, one or more battery modules and control means for controlling the AC and DC charging and discharging functions for safe and efficient operation. DC charging can include energy from a renewable energy source. The battery modules are separable from the system for providing DC energy for energizing automotive battery jumper cables or for energizing DC powered devices.
