Electrical systems
60
3.2 Battery Charger
During stage 1 the battery voltage is increased
gradually while the current is limited to start
the charging process and protect the battery.
At stage 2 the voltage rises to 14.4V to deliver
the bulk charge to the battery. When the battery
is charged, the voltage is decreased at stage
3 to 13.6V to deliver a float charge to maintain
the battery in the fully charged state. The
charger can be left switched on continuously as
required.
The battery charger / power converter also
provides power to the leisure equipment when
the mains supply is connected. This module
supplies DC to the leisure equipment up to a
maximum of 25 Amps (300 Watts), therefore
the available power is distributed between
the leisure load and the battery, with the
leisure load taking priority as per the following
example:
Leisure load Available power for
battery charging
5A 20A
10A 15A
15A 10A
20A 5A
The following table shows the rating and circuit allocation for the three MCB’s
MCB Rating Output Wire Colour Description
1 10 Amps White 230v Sockets
2 10 Amps White (Yellow for Heater) Extra 230v Sockets/Space Heater
3 10 Amps Black (Blue for water heater) Fridge/Water Heater/12v Charger
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