Electric vehicles run into many problems while charging, and a charger light that will not switch over is a common one. Below, Xupai explains the reasons this happens.

1. The charger current is too small and the charging time is long, so the battery cannot be fully charged within the expected time, and the charger light does not switch over.

2. The charging environment temperature is too high (45°C or higher), so the charging voltage at the battery cannot reach the set limit, the charging current stays at a high value and cannot fall to the turning-point current, which prevents the charger light from switching over.

3. The charger settings do not match the battery, so the battery is over-charged or under-charged for a long time and eventually loses water, and the charger light does not switch over (over-charging causes direct water loss; under-charging causes water loss through thermal runaway after sulfation).

4. Too much acid inside the battery disrupts the internal oxygen cycle, causing thermal runaway and preventing the charger light from switching over.

5. Too little acid inside the battery leads to water loss in the later stage of use, and the charger light does not switch over.

6. A micro short circuit inside the battery keeps the charging voltage at the battery below the set limit while the charging current stays high and cannot fall to the turning-point current, preventing the charger light from switching over.

We hope you now understand this fault better. Next time you meet it, you can deal with the charger- or temperature-related causes yourself, and for problems inside the battery, consider switching to a Xupai battery, which offers good quality and strong after-sales service.