How to Change a Car Battery Without Losing Power


1. Make sure the car ignition is turned off. Remove the keys from the ignition to be sure.
2. Set the jump starter power switch to the "Off" position.
3. Connect the positive (red) cable of the jump starter to the positive clamp that is connected to the terminal of the battery to be removed. Connect it so as to not interfere with the loosening and removal of the battery clamp from the terminal.
4. Connect the negative (black) clamp to the car’s chassis or a solid non-moving metal component or body part.
5. Turn the jump starter power switch to "On."
6. Using the wrench, loosen the bolt that holds the positive clamp on the terminal of the battery you're replacing. Slide the cable clamp off the terminal and place it away from the battery. Make sure the clamp does not come in contact with any grounded metal parts of the vehicle. Wrap it in a towel or rag to provide insulation from surrounding parts.
7. Loosen the negative clamp and remove it from the terminal in the same manner.
8. Firmly grasp the old battery and lift it from the vehicle.
9. Position the new battery in the vehicle battery area.
10. Position the positive cable clamp on the positive terminal of the new battery. Carefully tighten the clamp hardware with the wrench.
11. Position and connect the negative clamp to its terminal in the same way.
12. Turn the jump starter power switch to "Off."
13. Disconnect the jump starter clamps from the battery terminals and clamps.