Canon BJ-10sx - Manual (Page 91)

2. Turn on the battery switch.
3. Turn on the printer.
If you are using the battery pack and the printer does not receive
any data for 15 minutes, the printer automatically turns off to
save battery power.
NOTE: When you are not using battery power, turn off the
battery switch.
Printing with a low battery
When you are using the battery pack and the POWER light
blinks, the battery is low. If you are in the process of printing,
follow these steps:
1. Connect the AC adapter to the printer and the wall outlet.
2. Press
ON LINE to continue printing.
3. When you are through printing, recharge the battery as
described in the previous section Charging a Battery Pack.