Power-Sonic 12V 139Ah AGM Deep Cycle Battery, 18 Months Warranty Power-Sonic deep cycle PDC range is purpose built for those applications which require regular and consistent cycling (charge and dis-charge) Commonly called deep cycling the oversized negative plates and a specialised paste formulation of the PDC can provide constant power for longer periods of time without shortening the life of the battery Features: Absorbent Glass Mat (AGM) technology for superior performance Valve regulated, spill proof construction for safe operation in any position Oversize negative plates and a specialized paste formulation for true deep cycle performance Special additives in the paste ensure superior performance in deep discharge situations Power/volume ratio yielding unrivalled energy density Rugged impact resistant ABS case and cover Approved for transport by air DOT, IATA, FAA and CAB certified L certified Applications: Mobility Scooters Electric Bikes Caravans Marine Camping