Compatibility: Designed to work with for Makita 18V Lithium-Ion batteries. Compatible with for Makita BL1815N, BL1820, BL1830, BL1840, BL1850 and more High Quality:Our adapter is made of robust plastic with a convenient, slip-resistant design. It features high-quality tinned copper wire cores for excellent conductivity and flexibility. The cables are covered with fire-resistant silicone rubber insulation Application:This female socket is suitable for 12v car, truck, marine boat, motorcycle, etc, and fits for all 12v accessory plugs. Can be used with car charger to charge cell phones, , car audio, car MP3 player, car cleaners, etc. Important Tips: This converter is not a charger, it only outputs the voltage and power directly from your battery. The red wire is connected to the positive terminal, black wire is connected to the negative terminal. When using, make sure that the positive and negative wires of the device correspond to the positive and negative wires of the adapter NOTE: This product does not come with a battery. Please carefully confirm if you have the same battery as described below, otherwise do not place an order! If the product cannot function properly due to battery mismatch after placing the order, the buyer is responsible for it themselves! [ Buck converter ]: Output Voltage: DC 12V, DC 5V-13V Output Current: maximum 10A Efficiency: ≥ 95%. [ 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. Our battery adapter connector is exquisitely designed to tightly fit your battery, making it easy to install and remove. The battery adapter has overload, no-load power-off, overcurrent, and low voltage protection. Very suitable for golf carts, electric wheels, DIY t