Victron Energy BMV-702 Retail battery monitoring module

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

Medium voltage monitoring

This feature, often used in the industry to monitor large and expensive battery banks, is now available for the first time at a low price to monitor any battery bank.

A battery bank consists of a series of cells connected in series. The centre voltage is the voltage in the middle of the series. Ideally, the centre voltage is exactly half of the total voltage. In practice, however, deviations occur that depend on many factors, such as a different state of charge in new batteries or cells, different temperatures, internal leakage currents, capacities and much more.

Large or increasing deviations in the mean voltage indicate improper battery maintenance or a failed battery or cell. Corrective action following a medium voltage alarm can prevent serious damage to an expensive battery. For further information, please refer to the BMV manual.

Simple installation

All electrical connections are made via the quick connection board on the current shunt. The shunt is connected to the monitor using a standard RJ12 telephone cable. Included in the scope of delivery: RJ 12 cable (10 m) and battery cable with fuse (2 m); no other components required.

Also included are a separate front frame for a square or round display look, a locking ring for rear mounting and screws for front mounting.

Standard features:

• Battery voltage, amperage, power, ampere hours used and state of charge
• Remaining time at the current discharge rate
• Programmable visual and audible alarm
• Programmable relay to switch off non-critical loads or operate a generator if required
• 500 amp quick-connect shunt and connection kit
• Shunt selection option up to 10,000 amps
• VE.Direct communication port
• Stores a wide range of historical events that can be used to analyse usage patterns and battery status
• Wide input voltage range: 6.5 - 95V
• High resolution current measurement: 10 mA (0.01A)
• Low current consumption: 2.9Ah per month (4mA) @12V and 2.2Ah per month (3mA) @ 24V

Technical data

Input voltage range DC [V]: 6.5 - 95

Recommended battery capacity [Ah]: 1 - 9999

Weight [kg]: 0.74

Dimensions [mm]: 69 x 69

Communication type: Bluetooth VE.Direct

Category: Monitoring / Communication

Product warranty: 5 years