Tips on using the rechargeable li-ion battery – Brother TD-2120N User Manual
Page 119

Using the Rechargeable Li-ion Battery/Battery Base (Optional:PA-BT-4000LI/PA-BB-001)
113
14
b
Use the AC adapter and AC power cord 
to connect the printer to an AC power 
outlet.
1 Battery indicator
The battery indicator lights in orange 
during charging.
When the rechargeable Li-ion battery is 
fully charged, the battery indicator turns 
off.
NOTE
If the printer is turned on with the 
rechargeable Li-ion battery installed and 
the AC adapter is connected to an AC 
power outlet, the battery will be recharged. 
However, when the printer is turned on, 
even after the rechargeable battery has 
been charged, the battery charge will be 
used, leaving the battery with less than a 
full charge the next time the printer is 
used. We recommend leaving the printer 
turned off while charging the battery.
Stopping Rechargeable Li-ion Battery 
Charging
14
To stop the rechargeable Li-ion battery from 
charging, disconnect the AC power cord from 
the power connector of the printer.
Tips on Using the
Rechargeable Li-ion
Battery
14
Charge the rechargeable Li-ion battery as 
soon as possible after it is purchased. 
Since the battery is sold with the minimum 
charge necessary, the initial charge may 
have been depleted. To prevent 
deterioration, we recommend charging 
the battery immediately.
Charge the rechargeable Li-ion battery by 
plugging the printer into an AC power 
outlet or by using the adapter included 
with the 4 bay battery charger.
Darker prints discharge the rechargeable 
Li-ion battery faster than lighter prints. 
Adjust the print density setting in the 
printer driver’s dialog box or in the “Printer 
Setting Tool”. (See Print Density 
on page 36)
The rechargeable Li-ion battery can be 
charged in an environment between 41 
F
to 104
F (5 C to 40 C). Charge the
rechargeable Li-ion battery in an 
environment within this temperature 
range. If the surrounding temperature is 
out of this range, the rechargeable Li-ion 
battery will not be charged, and the battery 
indicator will remain lit. 
In this case, the battery indicator does not 
accurately show whether the battery is 
being charged. 
Charging restarts when the environment 
returns to within the specified temperature 
range. When 5 hours have passed since 
charging started, the battery indicator 
turns off and charging stops even if the 
rechargeable Li-ion battery has not been 
fully charged.
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