The AK 30 is the most powerful battery in the homeowner AK System. With an updated design plus increased power and run time over the previous model, the AK 30 operates at full power until battery depletion with no gradual drop-off in power. Ideal for select AK System tools, the AK 30 battery provides optimal run times for the MSA 140 C-B, RMA 460, and RMA 460 V. Compact and lightweight, this battery is an option for homeowners., Available at your Dealer