Taiwan King Strong TP01-S Owner's Manual page 13

* Battery gauge & Diagnostics indicators:
When the indicators turn on, it's in the Battery gauge situation:
Green lights: the battery has full capacity.
Orange lights: do not drive power-chair for long trip is suggested.
Red lights: the power-chair should be charged as soon as possible.
When the indicators become flashing, the number of flashing bar indicates the
possible fault. Description below:
P12