The NP4.5-6 is a 6V/4.5Ah Rechargeable Battery features a lead acid technology and quick connect terminals. The GENESIS® NP-series can be operated in any position without leakage. Stop operation when voltage has reached the minimum permissible voltage. Recharge immediately. Encase battery in a well ventilated compartment. Keep within ambient temperatures of -15 to 50°C for both charging and discharging.