Better security: The adapter is equipped with a fuse and high-quality cable to prevent excessive transient current from damaging the battery and equipment. This battery adapter/cover has been tested to work with 20V Max Li-ion batteries. Perfectly compatible : work with for 20V /18V DCB206 Li-ion batteries. Safety design: The adapter is equipped with 200mm 12AWG wire (with insurance base and boat-type switch). The nickel-plated contacts can improve conductivity and safety, suitable for high-power applications; working voltage: 5V-150V; working current: 1- 6A; Power: 5-120W; Working principle: Connect this product to the 20V lithium-ion battery, and draw out the battery power through two wires for use by other devices with the same voltage. It is a good helper for DIY players, such as electric toy modification, etc... Usage scenarios: Small, , and easy to carry, it can be used indoors or outdoors, and can also be well fixed on walls, machines, and DIY products with screws; Note: This product is only used as an output and cannot be used as an input to charge the battery. Remember, remember, remember! ! ! Tips: The red wire is connected to the positive terminal, and the 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. If you don' use it for a long time, please be sure to remove the battery form the adapter. Colour:yellow Material:ABS Package Contents: 1 x Battery Adapter (no battery) 3 x 30A fuse Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.