How to jump-start a 12V battery safely

1. Before you start

Confirm both owner manuals permit jump-starting and identify the marked 12V terminals or approved jump points.

• Both vehicles OFF, parking brakes on, transmissions in Park or Neutral.
• Keep vehicles close enough for the cables but never touching.
• Never jump a swollen, cracked, leaking, frozen or heavily corroded battery.

开始前

确认两辆车的手册都允许搭电，并找到明确标记的 12V 正负极或专用搭电点。

2. Connect in this exact order

Keep cables clear of fans, belts and hot exhaust parts. Never allow clamps to touch.

• 1 — RED clamp to the dead vehicle POSITIVE (+).
• 2 — RED clamp to the donor vehicle POSITIVE (+).
• 3 — BLACK clamp to the donor vehicle NEGATIVE (−).
• 4 — BLACK clamp to an unpainted metal ground point on the dead vehicle, away from its battery and fuel lines.

严格按顺序连接

让线缆远离风扇、皮带和高温部件，夹子之间绝对不能接触。

3. Start, then disconnect

Start the donor vehicle and idle for two to three minutes. Try the disabled vehicle for no more than 10 seconds.

• If it fails, wait one to two minutes and make only one more short attempt.
• Once stable, disconnect in reverse order: 4 ground, 3 donor negative, 2 donor positive, 1 revived positive.
• Keep the revived engine running and arrange a battery/charging-system test.

启动与拆线

启动救援车辆并怠速 2–3 分钟，再尝试启动亏电车辆，每次不超过 10 秒。

4. Stop immediately if

Stop for reversed polarity, smoke, cable damage, excessive sparks, heat or a burning smell. If two short attempts fail, call roadside assistance.

出现这些情况立即停止

若极性接反、出现烟雾、线缆损坏、明显火花、发热或焦味，立即停止；两次短暂尝试仍失败时联系道路救援。