The BL1850B 5.0 Ah Li-ion Battery has LED battery fuel gauge indicator, works with current Li-ion chargers and has a 45 minute charge time. It is lightweight, weighing no more than a 3.0 Ah Li-ion battery, has a longer run time and battery life.
The 193101-2 from Makita is a 14.4 V battery suitable for Makita 14.4 V power tools. This battery is compatible with both Ni-Cad and Ni-MH chargers.