3.2 Battery Charger - Swift Motorhome Owners Service Manual

The following table shows the rating and circuit
allocation for the three MCB's
MCB Rating
1 10 amps
2 10 amps
2 16 amps
3 10 amps

3.2 Battery Charger

The EC400 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:
Lesiure Load
5A
10A
15A
20A
Output wire colour
White
White (Yellow for heater
Yellow
Black (Blue for water
heater)
Available power
for battery
charging
20A
15A
10A
5A
Description
230v Sockets
Extra 230v Sockets /
Space Heater
Alde heating (EC470 PSU Only)
Fridge / Water Heater / 12v
Charger (internally connected)
!
WARNING: Under heavy loads the
Charger case may become hot. ALWAYS
ensure the ventilation slots have a clear flow
of air. Do not place combustible materials
against / adjacent to the Charger.
3.3 Smart Charging
On EC468 and EC469 PSU's, the 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.
3.4 Leisure Battery
a. 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 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. Before fitting
non-standard batteries please check that the
charging profile described in 3.2 is suitable for
the type of battery by referring to the battery
documentation or battery manufacturer.
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