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The
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command places the printer in battery discharge mode. This allows the battery to be drained without actually printing.

Kill Battery (Battery Discharge Mode)

To maintain performance of the rechargeable battery in the portable printers, the battery must be fully discharged and recharged regularly.
Format:
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Comments:
While the printer is in Discharge Mode, the green power LED flashes in groups of three flashes.
Discharge Mode might be terminated by sending a printing format to the printer or by pressing either of the control panel keys.
If the battery charger is plugged into the printer, the battery is automatically recharged once the discharge process is completed.