Perfectly compatible with for 20V /18V series battery, work with for DCB206 DCB201 etc. Power adapter connector is well-made, snug fit your battery, can install and lock battery easily. Battery adapter added switch ensures you can turn on&off the battery easily. Wide voltage input: 17V-55V, output voltage: 12V, output current: 20A, power: 240W. Our voltage buck converter adopted synchronous rectification technology further improve conversion efficiency and good stability. Power conversion efficiency can reach 95% Better safety, voltage regulator equipped smart chip, provides Over-current, Over-load, Low-load, Over-voltage, Under-voltage, Over-heat and Short-circuit intelligent protection. We upgraded low voltage protection, this voltage converter built in over low voltage protection Easy to use. We combine the battery adapter and the voltage converter with 2 heat-resistant wires. more easy to use. Just install the battery to the battery adapter and then connect the voltage converter to your device. (Note: Battery NOT Included) Widely used, this power inverter suitable for 12v devices perfect for upgrade motor, ride on toys, golf carts, car trucks, speaker, monitoring equipment, power tools, led strip light, work lights or robotics DIY etc. Things to note: a. The buck does not have a reverse connection protection function. Please be sure to confirm the positive and negative poles of the adapter and the load before wiring to avoid reverse connection and burning the buck and the load; b. The input end must sufficient voltage and power to drive the output device; c. The voltage of the device driven by the output end must be the same as the voltage output by the buck converter, and the power required by the load device cannot be the maximum carrying power of the converter. Colour:Yellow & Silver Material:Plastic+Metal Package Contents: 1 * voltage regulator (battery not included) 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.