Airstream Rangeline 2023, Owner'S Manual

Page: 45 / 118

Interior
2023 Rangeline
5-15
Low-Voltage Disconnect
If an individual cell falls below a prescribed threshold
during discharge (approx� 10�6V), the BMS will prevent
further discharge� Although the battery is in “low-
voltage disconnect” mode, it may still allow a charging
current if there is enough voltage� However, it may not
accept a charge if the charger cannot detect voltage or
if there is insufficient amperage to start the generator.
If the battery does not accept a charge due to a low-
voltage disconnect, you may need to apply an 11V DC
(or greater) jump across the terminals to “wake up” the
battery� There are three methods of accomplishing this:
1� Start and run the vehicle engine to provide an
alternator voltage of approximately 14�5 VDC
across the battery terminals and a charge current
through the DC-DC converter� The amount of time
required will vary depending on the state of charge�
2� Plug the touring coach into external AC power
using the shoreline power cord�
3� Jump the house battery with an external charger�
When using the first method above, the engine will
need to run long enough for the alternator to charge
the battery to a point where the charger detects voltage
or enough current exists to start the generator� The
amount of time will vary depending on the state of
charge�
Also, bringing the battery out of low-voltage disconnect
only “wakes up” the battery and allows it to accept a
charge� Without shore or generator power, the battery
may go back into low-voltage disconnect as soon as
you shut the engine off�
CAUTION
The manufacturer states you should jump your
battery within 24 hours of entering the low-voltage
disconnect; otherwise, you risk damaging your
battery and voiding the warranty.
NOTE
If the battery is in low-voltage disconnect mode
and the battery temperature is below 35°F, the heat
function will need some time to warm the battery
before performing the wake-up procedure.
Temperature Limits
• The battery has an operating temperature range of
-4°F (-20°C) to 135°F (57�2°C)�
• The BMS will not allow a charging current under
25°F (-3�9°C) but will continue to discharge down
to -4°F (-20°C)�
• The BMS will not allow a charging or discharging
current if the internal temperature of the battery
has reached 135°F (57�2°C)
Cold Weather Usage
The house battery has internal heaters that will engage
when the battery temperature drops below 35°F (when
the battery disconnect switch is ON)� Depending on
the temperature, the heating element will automatically
engage and disengage and does not require any user
input�
NOTE
The BMS will not allow a charging current if the
internal temperature is below 25°F, and it will not
allow charging or discharging current above 135°F.