How to Use a Jump Starter Safely: A 60-Second Checklist

Dead battery? Follow this quick checklist to start your car safely and protect your electronics.

Before you start

• Read the jump starter’s manual and check charge level (≥ 75%).
• Switch off ignition, lights, and accessories.
• Confirm your vehicle is 12V (passenger cars and most SUVs).

Hook-up (10 seconds)

1. Open the hood and locate the battery (or remote jump posts).
2. Connect red clamp to the positive (+) terminal.
3. Connect black clamp to a clean, unpainted chassis ground or the negative (-) terminal away from the battery.
4. Make sure clamps are tight and cables clear of belts/fans.

Start (15 seconds)

5. Power ON the jump starter.
6. Wait for “ready”/correct-polarity indicator or a ~12.6V reading.
7. Crank the engine for up to 3 seconds. If it doesn’t start, wait 30–60 seconds and try again (max 3 attempts).

After start

8. Switch OFF the jump starter.
9. Remove black clamp first, then red.
10. Let the engine run 15–30 minutes to recharge.

Safety tips

• Never cross-connect clamps. Red never goes to (-).
• Keep away from flames/sparks; wear eye protection.
• Do not jump-start a cracked, swollen, or leaking battery.
• In freezing weather, pre-warm the battery area if possible.

Troubleshooting

• No crank: Check clamp contact, safety switch, and charge level.
• Sparking: Remove clamps; re-check polarity and ground point.
• Starts then stalls: Battery may be failing—get it tested.

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