Auto-Sleepers Symbol Plus 2018, Manual

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CONNECTION OF SERVICES
3.3 Battery Charger
The system incorporates an intelligent three-stage 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
WARNING: Under heavy loads the charger case may become hot. ALWAYS ensure any
ventilation slots have a clear flow of air. Do not place combustible materials against/
adjacent to the charger.
3.4 Leisure Battery
A) Type / Selection
For optimum performance and safety it is essential that only a proprietary brand LEISURE
battery is used and it is suggested to select a battery from the NCC Verified Battery Scheme
with a typical capacity of 75 to 120 Ah (Ampere / hours). Depending on the prospective use
of the vehicle the correct type should be selected (A, B or C). A normal car battery is NOT
suitable. This battery should always be connected when the system is in use.
The PSU is configured to work with standard lead acid leisure batteries and in most cases is
also compatible with the latest range of Absorbed Glass Matt (AGM) batteries. The system
is also suitable for Lithium batteries with built-in Battery Management Systems BMS).
Before fitting non-standard batteries please check that the charging profile described in 3.3
is suitable for the type of battery by referring to the battery documentation or battery
manufacturer.