Incorrect Battery Polarity

What does 29 mean?

The connected battery has been connected with reverse polarity to the charger. This is a critical fault that can cause severe and immediate damage to both the battery and the charger's power electronics if current is allowed to flow.

• The battery cables have been physically connected to the charger terminals in reverse (positive to negative, negative to positive).
• Incorrect wiring of the battery pack itself or its external connections.

Click steps to track your progress.

1. 1

   IMMEDIATELY disconnect the battery from the charger to prevent further damage.

2. 2

   Visually inspect and verify that the positive (+) terminal of the battery is connected to the positive (+) terminal of the charger, and the negative (-) terminal of the battery is connected to the negative (-) terminal of the charger.

3. 3

   After correcting the polarity, inspect both the charger and the battery terminals for any signs of damage (e.g., burning, melting) that may have occurred.