Battery regulator Power Tools Adapter Voltage Regulator-
Compatible for Makita 18V Battery : Perfectly compatible for Makita 18V lithium-ion batteries, it can work with BL1820 BL1840B BL1820B BL1815B BL1835 BL1845B BL1845 BL1830B BL1850B BL1860, etc. Output Current: maximum 10A.