Easy to install:
All electrical connections are made to the quick-connect PCB of the current shunt. The shunt is connected to the monitor via a standard RJ12 telephone cable.
Included: RJ12 cable (10 m) and battery cable with fuse (2 m); nothing else is needed.
Also included is a front decorative plate for the screen, square or round; a rear fixing ring, and screws for front mounting.
Midpoint voltage control:
This function is generally used to monitor large battery banks at a high cost. With the Victron BMV-712 Smart Battery Monitor, we can control this parameter at a much lower cost. A battery bank consists of a chain of cells connected in series. The midpoint voltage is the voltage obtained at the halfway point of this chain. Ideally, the midpoint voltage would be exactly half of the total voltage. However, in practice, deviations may occur depending on various factors, such as the different state of charge of new batteries or cells, their different temperatures, internal leakage currents, capacities, and much more.
Significant deviations from the midpoint voltage, or those that are increasing, indicate improper maintenance or a failure in a battery or cell. Corrective measures taken after a midpoint voltage alarm can prevent potential damage to a battery.
Low battery current drain:
Current consumption: 0.7 Ah per month (1 mA) @ 12V and 0.6 Ah per month (0.8 mA) @ 24V.
In particular, Li-Ion batteries have virtually no capacity when discharged to the low-voltage disconnect level.
After disconnecting the cells due to low voltage, the reserve capacity of a Li-ion battery is approximately 1 Ah for every 100 Ah of capacity. The battery will be damaged if the remaining capacity reserve in the battery is drawn out. A residual current of 10 mA, for example, can damage a 200 Ah battery if the system is left in a discharge state for more than 8 days.
Bistable alarm relay:
Prevents an increase in current drain in case of an alarm.
Other functions of the BMV-712 Smart Battery Monitor Victron:
Voltage, current, power, consumed ampere-hours, and battery state of charge.
Remaining autonomy at the current discharge rate.
Programmable visual and audible alarm.
Programmable relay, to disconnect non-critical loads or to start a generator if necessary.
Quick-connect shunt of 500 amperes and connection kit.
Shunt capacity selection up to 10,000 amperes.
VE.Direct communication port.
Stores a wide range of historical data that can be used to evaluate usage patterns and battery status.
Wide input voltage range: 6.5 to 70 V.
High current measurement resolution: 10 mA (0.01 A).
Additional input to measure voltage (from a second battery), temperature, or midpoint voltage and corresponding alarm and relay settings.
