Step 5: After successfully cranking the vehicle, the jump starter will automatically power off in 10 seconds without any operation. Remove the clamps from batteries and separate the clamps and jump starter. (Red) (Black) Other Functions This jump starter is able to be used as a power bank. Press the Power Button once to turn on the JUMPSURGE3000. Then you can quickly charge your phone or tablet through the USB Out port, and quickly charge your laptop through the Type-C Out port. You can also use it to supply DC power (Max 16.8V/10A) to other automotive devices, such as tire inflator or car fridge, through the DC Out port.