Connecting the printer’s external power supply to the battery will wake up the battery. The battery determines if charging is needed.
The battery will not start charging until the battery’s charge level is below 90% charge. This extends your battery’s life.
Once charging has begun, the battery will charge to 100% capacity and then go into Sleep Mode.
The printer is receiving the external power passed through by the battery circuitry into the printer. The battery does not charge while printing or moving media.
The battery uses a very small amount of power during Sleep Mode to maximize the available charge stored in the battery.
It takes about 2 hours to charge a fully discharged battery.