Brother MW-145BT - Manual (Page 7)

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Charging
Use the AC adapter designed specifically for this printer to charge the
battery.
After purchasing this printer, be sure to charge the battery fully before
using it.
1
Plug the AC adapter cable
into the printer.
2
Plug the AC adapter plug into
a household electrical outlet
(AC 220 V
- 240 V).
Charging of the lithium ion battery
automatically begins.
→
The orange charging LED is lit.
→
When charging is finished, the charging LED
goes off.
3
After charging is finished, disconnect the AC adapter.
y It takes approximately three hours for the battery to be
recharged from completely empty to fully charged (with the
printer turned off).
y Recharge the battery in an environment with a temperature
between 5 °C and 40 °C. (The battery will not recharge if the
ambient temperature is outside of this range.)
The MW-145BT cannot be operated solely with the AC adapter.
The rechargeable battery must be installed.
The plug may differ
by country.