5 AH uses a state of the art, heavy-duty, calcium-alloy grid that provides exceptional performance and service life in both float and cyclic applications.5AH SLA Battery Replacement for ExpertPower EXP645 Delivering power when you need it, the Mighty Max ML4-6 6-Volt 4. SLA / AGM spill proof battery has a characteristic of high discharge rate, wide operating temperatures, long service life and deep discharge recover. Long lasting high performance in high and low temperatures.