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CONNECTION OF SERVICES
3.3 Battery Charger
The EC500 system incorporates an intelligent three-stage battery charger / power converter.
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 Smart Charging
The EC500 system incorporates a smart charge feature, which monitors both leisure and vehicle
batteries and automatically adjusts and directs the charger power (and solar power if a solar
panel is installed) to maintain the leisure and vehicle batteries at an optimal level.
3.5 Leisure Battery
3.5.1 Type / Selection
For optimum performance and safety it is essential that only a proprietary brand LEISURE
battery is used with a typical capacity of 75 to 120 Ah (Ampere / hours). A normal vehicle 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. 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.
Some vehicle installations can cater for two leisure batteries connected in parallel. In these
cases it is recommended that two identical batteries are used.
The battery feed is fitted with an inline fuse between the battery and the electrical harness, and
is usually located immediately outside the battery compartment or within 500mm of the battery.
The maximum rating of this fuse is 20A per battery. If a single battery is fitted to a motorhome,
this fuse may be increased to 30A, however if two batteries are fitted each battery should be
fused at a maximum of 20A.
3.5.2 Installation & Removal
Always disconnect the 230v mains supply and turn the PSU green charger switch to the off
position (button out) before removing or installing the battery.