How to Attach Jumper Cables with Battery Pack Jumper
Expert Reviewed Article by our Certified Editor, Christopher Bouchard, C.E.M.
Read the Manual: Before starting, read the battery pack’s manual for specific instructions and safety information.
Turn Off the Car: Ensure the car’s ignition is turned off. This prevents any electrical surges that might occur during the connection process.
Locate the Battery: Open the car hood and locate the battery. Identify the positive (+) and negative (-) terminals.
Prepare the Battery Pack: Make sure the battery pack is fully charged. Most packs have an indicator light to show their charge level.
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Attach the Red Cable (Positive) First:
Connect the red (positive) clamp to the positive terminal of the car battery.
Ensure the clamp is securely attached and makes good contact with the terminal.
Attach the Black Cable (Negative):
Connect the black (negative) clamp to a clean, unpainted metal surface on the car’s engine block or chassis. This acts as a ground and reduces the risk of sparks near the battery.
Some battery packs allow you to attach the negative clamp directly to the battery’s negative terminal. Check your pack’s manual for the preferred method.
Turn on the Battery Pack
Switch on the battery pack according to the manufacturer’s instructions. Some packs have an on/off switch, while others activate automatically when connected.
Start the Car:
Attempt to start the car. If it doesn’t start immediately, wait a few moments and try again.
Do not crank the engine for more than 5-10 seconds at a time. If the car doesn’t start after a few attempts, wait a couple of minutes before trying again.
Disconnect the Cables
Once the car starts, carefully remove the clamps in reverse order: first the black (negative) clamp, then the red (positive) clamp.
Be cautious to avoid the clamps touching each other or any metal surfaces.
Recharge the Battery Pack: After use, recharge your battery pack as soon as possible so it’s ready for future use.
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