Perfect Compatible?Our Battery Charger Replacement For Makita 18V Charger Dc18Rc Dc18Ra Dc18Sf, Works With Makita 18V Lxt Lithium Battery Bl1830B-2 Bl1850-2 Bl1850B-2 Bl1840B Bl1820B Bl1860B-2 Bl1830 Bl1840 Bl1850 Bl1860 Bl1815 And Makita 14.4V Lithium Battery Bl1430 Bl1450 Bl1440 Etc. | | Twin Ports Battery Charger: This Lithium-Ion Twin Ports Battery Charger Could Charge 2 Makita Batteries At The Same Time, As Fast As Dc18Rc Charges One Battery. | | Fast Charging: It Outputs High Current Up To 4A That Can Save Your Charging Time. It Charges Two 2.0Ah Batteries In Only 25 Minutes, Two 3.0Ah Batteries In Only 30 Minutes, Two 4.0Ah Batteries In Only 40 Minutes, Two 5.0Ah Batteries In Only 45 Minutes, Two 18V 6.0Ah Batteries In Only 60 Minutes | | Protect Batteries: This Charger Communicates With The Battery'S Built-In Chip Throughout The Charging Process To Optimize Battery Life By Actively Controlling Current, Voltage And Temperature | | Led Indicator And Music .