Brother MPRINT MW-145BT Guide De Référence Rapide page 6

Getting Started
Installing the battery
Only use the rechargeable battery (BT-100) that is designed for this
printer. Otherwise there will be a risk for fire or serious damage.
1
Press the area indicated 1 on
the battery cover 2 and slide
it off the MW-145BT.
2
Insert the connector 1 of the
battery 2 in the direction
shown right.
1-4
DO NOT take off the black plastic that covers the battery.
The battery connector should not be frequently unplugged and
reconnected, otherwise it may become damaged or the battery
cord may break.
The battery should only be removed when replacing it at the
end of its service life, or when the printer will not be used for a
long period of time.
Insert the connector fully, without using excessive force.
Be sure you insert the connector in the correct orientation,
otherwise it may be damaged.
Danger
Black
Red