hymer BMC 550, Инструкция по эксплуатации

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8 Electrical system
116
B-MC - 12/18-2 - EHG-0016-01EN

Depending on the model and the equipment, up to two auxiliary batteries
may be connected to the lead battery.

Lead batteries are maintenance-free. Maintenance-free means:
It is not necessary to check the acid level.
It is not necessary to lubricate the battery poles.
It is not necessary to refill the distilled water.
Even a maintenance-free battery must be recharged.
Recommendation: Perform a full charging cycle every 6 to 8 weeks. De-
pending on the battery capacity and the charger, the charging cycle will
last 24 to 48 hours.
When the vehicle is not connected to the 230 V power supply or the 230 V
power supply is switched off, the living area battery supplies the living area
with 12 V DC. The living area battery has a limited power supply only. For
this reason, electrical appliances such as the radio and the lights should not
be operated for a long time without using the 230 V power supply.
The living area battery is installed in the double floor and is accessible via a
floor trap in the living area.
The living area battery is discharged by the closed circuit current which
some electrical appliances continuously require.

Total discharge damages the battery. The consequence may be defor-
mation, heat development, and damage due to scorching.

Recharge battery in good time.
Note that even a fully charged living area battery can be fully discharged by
closed circuit currents (inactive appliances).
Low temperatures outside reduce the capacity available.
The self-discharge rate of the battery is also dependant on temperature. At
20 to 25 °C the self-discharge rate is approx. 3 % of the capacity per month.
The self-discharge rate will increase with rising temperatures: At 35 °C the
self-discharge rate is approx. 20 % of the capacity per month.
An older battery no longer has the complete capacity available.
The higher the number of active electrical appliances, the faster the energy
of the living area battery is consumed.
Only use the transformer/rectifier to charge the living area battery. There-
fore, connect the vehicle to a 230 V power supply system as often as possi-
ble. As a principle, only use the 230 V connection on the vehicle (CEE
socket outlet) for connecting.

Charge the battery for at least 48 hours after a total discharge.

At temperatures below 0 °C, a living area battery consumes less power.
At approx. -15 °C, there will be no more power. The living area battery
can no longer be charged.

Always connect the load and charging lines cross-wise. This is neces-
sary to ensure the batteries always have the same line resistance to one
another. This allows the charging/discharging current to be distributed
equally.
Position
Discharging
Charging