【How to Use】When use the Car Jump Starter adapter connect with for Dewalt 20V Battery and your car: 1) First, until the LED light on the car Jump starter power adapter turns green and stays on; 2) Second, then Start the car and remove the clamps after car working. 【Compatible with Dewalt 20V Li-ion Battery】 The Jump starter adapter is perfectly compatible with Dewalt 20V Lithium Ion Battery DCB206 DCB204 DCB203 DCB200 DCB201 etc.(Note: Battery not included ). 【For Dewalt Jump Starter】The 12V car battery charger Jump Starter has a wide range of applications, making it suitable for mini cars, golf carts, camping lights, lawn mowers, preparing fishing boats for water and night fishing, and providing power for outdoor activities. Attention Please: The jump starter adapter can only start a vehicle below the 3.5L Gas or 6.5L Diesel engine. And it is just the role of emergency starting a car. 【​Easy to Use】To use Car Jump Starter, first plug jumper cable adapter into your Milwauke 18V battery tightly, then attach the red battery clamp to the vehicle’s positive terminal (+) and the black clamp to the negative terminal (-). 【NOTE 】Do not reverse the operation of the jumper starter. Be careful when using this product as it cannot be overloaded. Please check the power requirements of your equipment before use. Please note that the Jumper Starter does not convert or step down voltage. Note!!! To use Car Jump Starter, first jumper cable adapter connect with for Dewalt 20V battery tightly, then attach the red battery clamp to the vehicle’s positive terminal (+) and the black clamp to the negative terminal (-). 1) Until the LED light on the car Jump starter power adapter turns green and stays on 2) Then Start the car and then remove the clamps.