Lister Eclipse: How do I know the battery is charging?

The LED signals will illuminate with a continuous light at the current charge level to signal that battery pack is now charging. Once the battery pack ahs finished charging, the 3 LED signals on the charging stand will switch off. 1 Light: 0.33% 2 Lights:34-66% 3 Lights 67-100% 0 Lights: Fully charged