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 Rapid Optimum charger monitors battery and actively controls the current, voltage and temperature for faster charging and longer battery life.
The 197406-2 (BL1041B) Li-ion battery can be used in both Makita 10.8V or 12V CXT cordless tool range. The 197406-2 is equipped with a 4 stage LED battery fuel gauge, battery protection circuit and low temperature performance.