1. Compatible with Milwaukee 18V for M18 Batteries: Jumper cables compatible with Milwaukee M18 battery 18V lithium ion battery 48 11 1820 48 11 1822 48 11 1840 48 11 11850 48 11 1852 48 11 1852 48 11 11860 48 11 11862, etc. When your car battery drains, you can use the jumper cables to power from the cordless tool battery to start your car (Notice: Battery not included). 2. How to Use: 1. Connect the red clip of the jumper cable to the positive terminal '' of the car, connect the black clip to the negative terminal '' of the car; 2. Connect for M18 18V battery (at least 5ah) and charge, the LED light will blink; 3. Wait for approximately 3 10 minutes until the green light is often on, try to start the vehicle, with the ignition time not exceeding 2 seconds; 4. If ignition is successful, remove the cables within 30 seconds to prevent potential security incidents. 3. Important Safety Notes: 1. Do not connect the positive and negative terminals of the car jump starter and do not place it in water or fire, as this may cause a short circuit; 2. The jumper cable has an insulated handle to prevent electric shock and protect user ; 3. Car ignition is successful, remove the cables within 30 seconds to prevent potential security incidents. 4. Car Jump Starter Note: This jumper cable does not convert or step down the voltage, it simply provides an additional option for starting your car in an emergency. When enough current has been transferred, your car should start, unless there is something more seriously wrong. It's important to note that some car batteries may be too depleted to be jump started, in which case you'll need to call a tow truck.