Lithium Ion Battery 12 Volt 12 Ah and Charger
Lithium ion battery in a lead acid case. Includes dedicated lithium ion charger. Fits all M4 models. Provides 50% more power than the standard 8 ah lead acid at 35% the weight. (Weighs only 1.75 lbs versus 5 lbs for the lead acid. Energy density 82 watt hours per pound versus 19.2 watt hours per pound lead acid. 430% improved energy density.)
Built in battery saver circuit protects against full discharge and overcharging.
*****Use only the charger provided to prevent permanent damage******