Feature:1. Versatile: The lithium battery charger is a combination of charging, discharging and inverting. It can charge two batteries at the same time and also convert 18V to 110V 220V AC power. The voltage input is 100V to 240V, the voltage output is 14.4V to 18V, and the output current is 3.5A.2. USB Interface: Lithium battery charger can provide you with a convenient and fast way to use electricity while camping. Equipped with USB 5V 2.1A and type C 18W power connector, it can power your phone and other devices more conveniently. The cable length of our charger is 4 feet.3. Compatible Models: The battery charger is compatible for BL1830B 2 BL1850 2 BL1850B 2 BL1840B BL1820B BL1860B 2 BL1830 BL1840 BL1850 BL1860 BL1815 BL1430 BL1450 BL1440, etc. It is also compatible with for Teenpower , for Amityke, for Aoasur, for Ibanti's replacement battery.4. LED Light: The LED light of 14.4V 18V lithium battery charger clearly shows you the charging status, and the built in air cooling system makes the charger and battery work in reliable and safe conditions.5. Save Time: The 14.4V 18V battery charger allows you to charge two batteries at once, saving time. Charge two batteries in 120 minutes for 6000mAh, 105 minutes for 5000mAh, 85 minutes for 4000mAh, 65 minutes for 3000mAh, 45 minutes for 2000mAh and 35 minutes for 1500mAh.Specification:Item Type: Lithium Battery ChargerMaterial: ABSInverter Output: 110V or 220WType C: For PD3.0 18WUSB: 5V 2.1A.Package List:1 x Lithium Battery Charger1 x Charger Power Cord Have a great time shopping!