PVX-2580L is built to withstand shock and environmental conditions. Substantial inner lead plates with massive welds provides longer life, thick shockproof outer container walls and interior polyethylene walls eliminate bulge and keep plates stationary through years of service. New handle design for easy positioning. With non-corrosive copper alloy terminals for low impedance, high power output, there is no exposed lead. No electrolyte leakage - the valve regulated sealed design is non spillable so this battery can sit upright, on its side or end. Maintenance free recombinant gas design for clean, reliable operation.