Feature: 1. The charger is compatible with all for Makita LXT batteries and charger DC18RA DC18RC. 2. This battery charger has built-in overcharge, overdischarge, overcurrent and overheat protection. 3. Provide short circuit protection and constant voltage circuit, with over discharge, overload protection, safe operation, no memory effect. 4. This lithium battery charger has the same performance as the original device. 5. The lithium battery DC18RC charger is easy to operate, convenient and practical. Specification: Item Type: Charger for Makita BatteryBattery Model: BL1840 .Battery Type: Lithium ion/battery Battery Voltage: 18V Battery Capacity: 4000 mAh Charger Input: 100~240V 50/60Hz Charger Output: 14.4V~18V Charger Charging Current: 3 A Power: 73W Lithium-ion batteries can replace for Makita BL1860, BL1860B, BL1850, BL1850B, BL1840, BL1840B, BL1830, BL1830B, BL1815, BL1825, BL1835, BL1845, 194205-3, 194309-1, LXT400 How To Use: 1. Open the package and take out the charger and battery. 2. Power on the charger, and then insert the battery. After the battery is fully charged, unplug the plug and remove the battery. 3. Insert the fully charged battery into the machine to be used and it can be used.Size: Approx. 18cm / 7.1in7.5cm / 3in 15.5cm / 6.1in Package List: 1 x Charger2 x Battery2 x User Manual (1 x charger user manual, 1 x battery user manual)