SECTION 5 –
ELECTRICAL
5-8
with correct voltage levels. Once the charge
current is removed, battery voltage will slowly
lower to resting level, typically 13.6V. If your
charging source has a “float” mode, it should be
set to 13.6V.
Temperature Based Cutoff
When the internal battery temperature goes
below or above the preset safe limits the BMS
will disable charge or discharge current to
prevent further use of the battery until the
temperature returns to safe operating limits.
Different temperature limits are enforced for
charging and discharging due to the nature of
Lithium chemistry. Discharge safe range is -4°F
to 131°F, charge safe range to 32°F to 113°F.
Over Current Protection
The BMS will disable discharge or charge
current if the current/amperage value exceeds the
preset thresholds. To restore normal operation,
remove/address the source of the overload, then
short-press the Power button.
Short Circuit Protection
The BMS will immediately disable discharge
current if the current value exceeds 1000A. To
restore normal operation, remove/address the
source of the short circuit, then short-press the
Power button.
NOTE: The lithium battery is capable of
significant power output and may
maintain the voltage level during a short
circuit event, producing a very large
current, capable of melting or welding
connection points and damaging cables
and connectors. Even when the BMS
detects the short circuit and tries to open
it, the BMS switch itself might weld
under such large current. Make sure the
battery connection is always properly
fused and does not rely on the BMS alone
for short circuit protection.
LITHIUM BATTERY HEATER
There is a heating blanket covering the lithium
battery in your coach. The heating blanket has
thermostatic controller that turns on at 35
°F
and
off at 45
°
F.
The lithium batteries must be at 32°F
and above in order to charge.
The lithium battery heating blanket system is
controlled by an On/Off control switch.
The switch must be turned on for thermostatic
control to operate. The switch can be turned off if
conserving battery power is preferred over the
ability to charge if the batteries get too cold. It is
recommended that the lithium battery heater
switch is left in the ON position in cold climates.
CIRCUIT BREAKERS AND
FUSES – HOUSE 12-VOLT DC
All 12-volt circuits and equipment in the
coach area of the motorhome are protected by
either a fuse panel or breaker panel. When a
circuit is overloaded or a short develops in any
part of the system, a fuse or breaker will shut
down that circuit. If this happens, turn off all
affected lights or appliances and reset the breaker
or replace the fuse with a new one of equal
amperage rating.
House 12-Volt Fuses
A label on the panel states the amperage rating
and circuit protected for each fuse.
Lithium Battery Heater (Located in driver’s
side rear battery access panel)
-Typical View
