Maintenance-free Absorbed Glass Mat (AGM) technology - no water required, no spills, no leaks, and no maintenance Leak-proof pressurized valve system is engineered for safety and long life. Helps prevent dry-out and acid damage to the terminals High density plate oxide provides for maximum power-per-pound and dependable high cycling service Additional Features BCI Group Number:47 Cold Crank Amp:660 68 Reserve Capacity:105 MJ Volts:12 2H