4.0Ah 18V Replacement for Makita 18V Battery Item Specification: Voltage: 18 Volts Capacity: 4000mAh Why Choose Us: Installed with LED indicator can check the battery level, so you can charge the batteries in time. It makes battery for Makita 18v tools more efficient Replacement for Makita 4.0Ah 18 Volt battery BL1860B BL1820 BL1830B BL1840B BL1850B BL1825, Compatible with Makita 18V chargers DC18RA, DC18RC, DC18SD, DC18SE, DC18SF,DC24SC etc Our batteries have multiple protection systems such as overheat, overcharge, overcurrent, overvoltage and short-circuit protection.You can use it with confidence on the tool Cordless tool batteries care tips: 1. Please keep the battery away from small metal objects. 2. Please store the battery in a dry place 3.Please charge once every one to two weeks