Technical Description - Dometic NDS IM12-150 Installation And Operating Manual

EN
• Incorrect maintenance or use of spare parts other than original spare parts provided by the manufacturer
• Alterations to the product without express permission from the manufacturer
• Use for purposes other than those described in this manual
Dometic reserves the right to change product appearance and product specifications.
The radio equipment of the device complies with the requirements of the directive 2014/53/EU. You can find the
Declaration of Conformity of the device on http://documents.dometic.com.

6 Technical description

The battery monitor consist of a control unit and a display.
The black box measures the data from a battery and transmits the data to the display. The black box is available in
two versions. The iManager12-150 transmits the measurement data via a power cable. With the iManager12-150W
the data is transmitted wireless.
The battery monitor measures the flowing data:
• Battery state of charge (SoC)
• Battery voltage (V)
• Battery current (A)
The battery monitor can be connected simultaneously to up to one starting battery and 2 house batteries of different
types and capacities. The battery monitor constantly checks the voltage of the connected batteries and automatically
selects the battery to be used according to the charging and discharging currents.
The battery monitor is connected to a battery charger or a solar panel and charges the connected batteries. The
charger charges the house batteries evenly through the battery monitor and ensures that the house batteries have
approximately the same state of charge. The starting battery is charged when its voltage is less than 12 V and the
house batteries are fully charged.
Battery monitoring
The battery monitor controls the voltage of the connected house batteries during charging and discharging as well
as the temperature of the house batteries. The battery monitor disconnects a house battery when any of the follow-
ing occurs:
• The voltage of one or both house batteries is below 10.5 V.
• The voltage of one or both batteries is below 11 V for more than 15 min.
• The temperature of one or both house batteries exceeds 60 °C.
If a wireless display is connected to a control unit via a power cable, the display is also disconnected. When a battery
is disconnected, a sequence of beep sounds.
Automatic mode
When the automatic mode is activated, the battery monitor selects the battery to be used and charges the batteries if
a charger is connected to the battery monitor.
If the battery monitor is connected to two house batteries with different state of charge and a charger, the battery
manager charges the house battery with the smallest state of charge until a state of charge similar to the other house
battery is reached.
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