7. Electrical Installations
126
The battery circuit breaker must be
on
when using the
vehicle home and whilst driving.
When the circuit breaker is open, the electrical input
stage
*
will
not
engage automatically.
If the battery circuit breaker has been switched on for a
longer period of time, you may lose your customised radio
and/or sat nav device settings. These settings must then
be entered again.
The battery charger is directly connected to the ancillary battery
so that the ancillary battery can be charged via the 230V mains
supply even if the battery circuit breaker is switched on.
The battery sensor* (model-specific) continues to be acti
-
vated even if the battery circuit breaker has been opened.
To keep the batteries charged even when not in use, it is
mandatory that the vehicle be connected to a 230V mains
connection every 6 weeks. Recharging should be carried out
for at least 24 hours.
Charger Dometic PerfectCharge SMP 439
The charger supplies the batteries with electric power.
During this process, the existing cooling system runs passively;
the fan is not active.
If the charging currents to the two batteries are high for a re
-
latively long period of time, the charging current to the engine
battery will be reduced and limited via an electronic current
limiter. As a result, the leisure battery will be charged first.
Should the battery sensor measure a battery temperature of over
52°C, the control will pause the charging process to prevent the
battery from being overcharged.
Battery charger