House Battery; Battery Management System (Bms); High Voltage Disconnect - Airstream Rangeline 2023 Owner's Manual

Interior

House Battery

The Battle Born 270Ah 12V LiFePO4 Deep Cycle
Gamechanger 3�0 House Battery with built in Battery
Management System is the onboard power source for
your touring coach� It is housed under the roadside bed
base�
The battery outperforms traditional lead acid batteries
and offers more usable energy� Lithium batteries have
a life span of approximately 3000-5000 cycles� A
discharge and a charge determine a cycle� The number
of cycles a lithium battery can sustain varies by use�
A battery that is only ever discharged to 50% SOC will
have more cycles than a battery repeatedly discharged
to 0%�
Lithium batteries provide longer life and faster charging
than lead acid batteries while still providing 80% of
the rated capacity after thousands of cycles� Unlike
lead-acid batteries, which require water replacement,
lithium batteries require no active maintenance� The
use of lithium batteries in Airstream's Touring Coach
also provides the benefit of delivering more energy at
typically half the weight of a traditional battery�
For information on the various methods of charging the
battery see Battery Charging on page 5-18�
NOTE
An owner's manual for the lithium battery is
provided in the Airstream Owner's Packet.
Make sure to read, understand, and follow
all information, such as Notes, Cautions, and
Warnings, before operating.
5-14

Battery Management System (BMS)

The BMS is an internal component of the house
battery and is crucial in ensuring the safe operation of
the lithium battery� The BMS monitors cell voltages,
currents, and temperatures to ensure they operate in
a safe range and will shut the battery down should any
faults occur� The following are features of the BMS:
• Over/under voltage protection
• High current protection/short circuit
• High-temperature protection
• Low-temperature charging protection
• Cell balancing

High Voltage Disconnect

If an individual cell voltage exceeds a prescribed
threshold during charging (approx� 14�7V), the BMS will
prevent a charge current from continuing� Discharge is
always allowed under this condition�
CAUTION
Even though the BMS will protect against issues
from overcharging, it should be avoided. The
recommended specs are 14.2-14.6 bulk/absorb and
below 13.8 float.
NOTE
If the battery has not been balanced for a long
period, a high voltage disconnect could occur at
a lower voltage. The battery will rebalance after
several full charges.
2023 Rangeline