EC700 Power Control System
Issue: 1
Page 10 of 17
1
st
October 2017
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.
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 could be up to
40A, however if two batteries are fitted each battery should be fused at a maximum of 20A.
B)
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.
When connecting the battery, ensure that the correct polarity is observed (black is negative [-] and red
is positive [+]) and that the terminals are securely fastened. Crocodile clips must not be used.
WARNING
Explosive gases may be present at the battery. Take care to prevent flames and sparks in the vicinity of
the battery and do not smoke.
C)
Operation / Servicing
Under normal circumstances it should not be necessary to remove the battery other than for routine
inspection of the terminals and “topping up” of the battery fluid where applicable. Please see instructions
supplied with the battery.
Note: Do not over discharge the battery. One of the most common causes of battery failure is when the
battery is discharged below the recommended level of approximately 10V. Discharging a battery below
this figure can cause permanent damage to one or more of the cells within the battery.
To prevent over discharge, the EC700 system incorporates a battery protect circuit that warns the users
and then disconnects the batteries when they fall below set values.
If a warning is active a beep will be emitted by the control panel and information will be shown on the
screen. To cancel the warning, press the ok button on the pop up window. These warnings will not be
repeated unless the power switch is turned off and on again. This is to ensure the warning does not
become a nuisance.
