Victron Battery Monitor BMV-702

The BMV-702 is a highly accurate battery monitor.
The main function of a battery monitor is to calculate the consumed ampere-hours and the state of charge of a battery. The consumed ampere-hours are calculated by integrating the current flowing into or out of the battery.

The remaining battery capacity depends on the consumed ampere-hours, the discharge current, the temperature and the age of the battery. Complex software algorithms are required to take all these variables into account. In addition to basic display options such as voltage, current and consumed ampere-hours, the BMV-702 series also displays the state of charge, remaining runtime and power consumption in watts.

With the Bluetooth Smart Dongle, you can monitor your batteries via an Apple or Android smartphone, tablet, MacBook, as well as other devices.

All electrical connections are made using the PCB connector on the current shunt. The shunt is connected to the monitor via a standard RJ12 telephone cable.
Included in the delivery: RJ12 cable (10 m) and battery cable with fuse (2 m). No additional components are required. A separate front panel for a square or round display, a safety ring for rear mounting and screws for front mounting are also included.

A quick installation menu and a detailed setup menu with scrolling support the user when making the various settings. Alternatively, a quick and easy solution can also be used: download the smartphone app (Bluetooth Smart Dongle required)

This function, which is frequently used in industry to monitor large and expensive battery banks, is now available for the first time at an affordable price, so that any battery bank can be monitored.
A battery bank consists of a string of cells connected in series. The midpoint voltage is the voltage at the halfway point of the string. Ideally, the midpoint voltage is exactly half of the total voltage.
In practice, however, deviations occur. These depend on numerous factors, such as different states of charge in new batteries or cells, different temperatures, internal leakage currents, capacities and many more.
Large or increasing deviations in the midpoint voltage indicate improper battery maintenance or a faulty battery or cell. Corrective measures resulting from a midpoint voltage alarm can prevent serious damage to an expensive battery.

• Battery voltage, current, power, consumed ampere-hours and state of charge
• Remaining runtime at the current discharge rate
• Programmable visual and audible alarm
• Programmable relay to switch off non-essential loads or switch on a generator if needed.
• A 500 ampere quick-connect shunt and a connection set.
• Selectable shunt capacity up to 10,000 amperes.
• VE.Direct communication port
• Stores a wide range of historical data, based on which usage patterns and battery condition can be assessed.
• Wide input voltage range: 9.5 – 95 V
• High current measurement resolution 10 mA (0.01 A)
• Low power consumption 2.9 Ah per month (4 mA) at 12 V and 2.2 Ah per month (3 mA) at 24 V

Additional features of the BMV-702
Additional input for measuring voltage (of a second battery), temperature or midpoint voltage, as well as associated alarm and relay settings