If the charger works normally:

The light on the charger should glow green when you plug it into the socket without batteries connected.

When charging:
The light should change to red when you connect a battery that is charging.

When the battery is fully charged, the light turns green.

If you suspect that something is wrong with your charger, you can test with another battery if you have this. A defective battery can cause “symptoms” of a defective charger.

Safety information:
Read the operating instructions before use.
Never charge batteries without being present.
Our chargers are not approved for outdoor use.