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2 INSTALLATION GUIDE
2.5 Batteries
Working in the vicinity of a Lead-Acid battery is dangerous. Batteries generate
explosive gases during normal operation. For this reason, it is of utmost importance
that you follow the instructions each time you use the charger.
When charging a battery, make sure the settings at the Battery Setup menu on the
Display are correct for the type of battery under charge. Charging a battery with the
wrong profile may cause The Manager30 to indicate a fault or give misleading results
and could result in damage to the battery. Noticeable oscillations between Boost and
Absorption stages indicate the wrong choice of battery type. Check and adjust battery
type. If you are unsure of the battery type or settings to use, set The Manager30 to
the Gel setting.
Figure 2.5.1 and 2.5.2 show standard wiring for batteries in series and parallel respectively.
12V 12V 12V
To 12V
system
Battery Sensor
Figure 2.5.1 - Batteries in Series. Figure 2.5.2 - Batteries in Parallel.
Ground
6V
To 12V
system
Battery
Sensor
6V
To ensure that all batteries are equally charged, loads and The Manager30 should be
connected with ground and 12V power connected diagonally opposite across all batteries
as shown in Figure 2.5.2.
The Ah rating needs to be setup when prompted on first start up, these settings can
also be modified in the “BMS Settings” menu (Refer Section 3.5). To calculate Ah rating
of batteries in parallel simply add the rating of each battery in the bank together. For
example, 3 batteries with an Ah rating of 100Ah each will yield a total of 3 x 100Ah or
300Ah. Batteries connected in series will assume the lowest Ah rating of the batteries
in the bank. For example, 2 batteries in the bank, one is 50Ah the other 100Ah. When
connected in series the Ah rating is 50Ah.
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