Before charging the jetboard battery, it’s important to make sure that the battery has had time to cool off after use.
Once you ensure it’s cooled, you can connect the battery to the charging cable. It may take some time to initiate, but eventually red and green LED lights will appear.
A few moments later you will hear 2-3 clicking sounds and the LED lights will both turn red, indicating that the battery is properly charging.
When the battery is fully charged, the LED lights will revert back to red and green.
If the battery is in need of optimization, charging may not initiate (see article What is the Battery Optimizer feature?).