11
Battery selection and
management
This section refers exclusively to 12 V rechargeable batteries.
The batteries you select will depend on whether your
installation is a solar or a battery-only installation. For both
types of installation, the selector switch position you use
most frequently will be a factor. Refer to
Operation
on page
7 for an explanation of the function of the selector switch.
Battery selection for a battery-only
installation
As a guide, the amp hour (Ah) rating of the 12 V
rechargeable batteries required is shown below. This table is
based on a seven day operating period between battery
charging. Although operating time can exceed seven days,
this is likely to cause battery damage and will necessitate
frequent replacement of the battery. For best system
reliability and long term battery life, the preferred battery and
charging regime is to use a 12 V rechargeable battery and to
recharge it when it is half discharged. For more information
on checking the battery voltage, see
Testing the battery
voltage
on page 9.
Selector switch
position
Recommended batteries
250 Ah
350 Ah
350 Ah
200 Ah
400 Ah
WARNING!
12 V rechargeable batteries must be used.
Battery selection for a solar
installation
The battery and solar panels must be selected carefully to
suit the energizer's electrical current consumption. As well as
the position of the selector switch position, the battery and
solar panels you choose will depend on the amount of
sunshine at the location of the installation.
As a guide, the minimum amp hour (Ah) rating of the 12 V
rechargeable battery required is shown below. This table
shows the battery requirements for up to seven days of
operation with little or no sunlight. It takes into account the
variety of solar panel and regulator types that could be used
in a solar installation.
Selector
switch
position
Current required
(approximately)
Minimum
battery
capacity
750 mA
250 Ah
750 mA (day)
1250 mA (night)
1000 mA (24 hour average)
350 Ah
1250 mA (day)
750 mA (night)
1000 mA (24 hour average)
350 Ah
630 mA
200 Ah
1250 mA
400 Ah
WARNING!
12 V rechargeable batteries must be used.
