Victron BMV 700 series: Precision Battery Monitoring

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BMV 700 series: Precision Battery MonitoringBattery ‘fuel gauge’, time-to-go indicator, and much more
The remaining battery capacity depends on the ampere-hours consumed, discharge current, temperature and the age of the battery. Complex software algorithms are needed to take all these variables into account.
Next to the basic display options, such as voltage, current and ampere-hours consumed, the BMV-700 series also displays the state of charge, time to go, and power consumption in Watts.
The BMV-702 features an additional input that can be programmed to measure the voltage (of a second battery), temperature or midpoint voltage (see below).

Easy to install
All electrical connections are to the quick connect PCB on the current shunt. The shunt connects to the monitor with a standard RJ12 telephone cable. Included: RJ 12 cable (10 m) and battery cable with fuse (2 m); no other components needed.

Also included are a separate front bezel for a square or round display appearance; a securing ring for the rear mounting and screws for the front mounting.

Easy to program
A quick install menu and a detailed setup menu with scrolling texts assist the user when going through the various settings. Please consult the manual for details.

New: midpoint voltage monitoring (BMV-702 only)
This feature which is often used in industry to monitor large and expensive battery banks is now for the first time made available at a low cost, to monitor any battery bank.

A battery bank consists of a string of series-connected cells. The midpoint voltage is the voltage halfway along the string. Ideally, the midpoint voltage would be exactly half of the total voltage. In practice, however, deviations will be seen, dependent on many factors such as a different state of charge for new batteries or cells, different temperatures, internal leakage currents, capacities and much more.

Large or increasing deviation of the midpoint voltage points to improper battery care or a failed battery or cell. Corrective action following a midpoint voltage alarm can prevent severe damage to an expensive battery. Please consult the BMV manual for more information.

Standard features

  • Battery voltage, current, power, ampere-hours consumed and state of charge
  • Time to go at the current rate of discharge
  • Programmable visual and audible alarm
  • Programmable relay, to turn off non critical loads or to run a generator when needed.
  • 500 Amp quick connect shunt and connection kit
  • Shunt selection capability up to 10.000 Amps
  • VE.Direct communication port
  • Stores a wide range of historical events, which can be used to evaluate usage patterns and battery health
  • Wide input voltage range: 9,5 – 95 V
  • High current measurement resolution: 10 mA (0,01A)
  • Low current consumption: 2,9 Ah per month (4 mA) @12V and 2,2 Ah per month (3mA) @ 24V

BMV-702 additional features
Additional input to measure voltage (of a second battery), temperature or midpoint voltage, and corresponding alarm and relay settings.

BMV 700HS: 60 to 385VDC voltage range
No prescaler needed. Note: suitable for systems with grounded minus only (battery monitor is not isolated from shunt).

Other battery monitoring options

  • VE.Net Battery Controller
  • High voltage VE.Net Battery Controller: 70 to 350VDC
  • Lynx Shunt VE.Net
  • Lynx Shunt VE.Can

More about midpoint voltage
One bad cell or one bad battery can destroy a large, expensive battery bank. When batteries are connected in series, a timely warning can be generated by measuring the midpoint voltage. Please see the BMV manual, section 5.2, for more information. We recommend our Battery Balancer (BMS012201000) to maximize service life or series-connected batteries.

 Battery monitor  BMV 700  BMV 702 BMV 702 BLACK  BMV 700HS
 Supply voltage range  6,5 – 95 VDC  6,5 – 95 VDC  60 – 385 VDC
 Current draw, back light off  < 4 mA  < 4 mA  < 4 mA
 Input voltage range, auxiliary battery  n.a.  6,5 – 95 VDC  n.a.
 Battery capacity (Ah)  20 – 9999 Ah  20 – 9999 Ah  20 – 9999 Ah
 Operating temperature range  -20 +50°C (0 – 120°F)  -20 +50°C (0 – 120°F)  -20 +50°C (0 – 120°F)
 Measures voltage of second battery, or temperature, or midpoint  No  Yes  No
 Temperature measurement range  -20 +50°C  -20 +50°C  n.a.
 VE.Direct communication port  Yes  Yes  Yes
 Relay  60V/1A normally open (function can be inverted)  60V/1A normally open (function can be inverted)  60V/1A normally open (function can be inverted)


 RESOLUTION & ACCURACY (with a 500 A shunt)  BMV 700, BMV 702, BMV 702 BLACK & BMV 700HS
 Current  ± 0,01 A
 Voltage  ± 0,01 V
 Amp hours  ± 0,1 Ah
 State of charge (0 – 100 %)  ± 0,1 %
 Time to go  ± 1 min
 Temperature (0 – 50°C or 30 – 120°F)  ± 1 °C/°F
 Accuracy of current measurement  ± 0,4 %
 Accuracy of voltage measurement  ± 0,3 %
 Installation  Flush mount
 Front  63 mm diameter
 Front bezel  69 x 69 mm (2.7 x 2.7 inch)
 Body diameter  52mm (2.0 inch)
 Body depth  31mm (1.2 inch)
 Safety  EN 60335-1
 Emission / Immunity  EN 55014-1 / EN 55014-2
 Automotive  ECE R10-4 / EN 50498
 Shunt (included)  500 A / 50 mV
 Cables (included)  10 meter 6 core UTP with RJ12 connectors,
and cable with fuse for ‘+’ connection
 Temperature sensor  Optional (ASS000100000)

Victron Global RemoteVictron Global Remote
The Global Remote is a modem that sends alarms, warnings and system status reports to cellular phones via text messages (SMS). It can also log data from Victron Battery Monitors, MultiPlus units, Quattros and Inverters to a website through a GPRS connection to the VRM Portal. Access to this website is free of charge. VE.Direct to Global remote Interface cable needed (ASS030534000).

1000A/50mV and 2000A/50mV shunt1000A/50mV and 2000A/50mV shunt
For ease of use with the BMV series: the quick connect PCB on the standard 500A/50mV shunt can also be mounted on these shunts.

Interface cablesInterface cables

  • VE.Direct cables to connect a BMV 70x to the Color Control (ASS030530xxx)
  • VE.Direct to USB interface (ASS030530000) to connect several BMV 70x to the Color Control or to a computer.
  • VE.Direct to Global remote interface to connect a BMV 70x to a Global Remote. (ASS030534000)

BMV 700 series: Precision Battery Monitoring The PC application software BMV-Reader will show all current readings on a computer, including historical data. It can also log the data to a CSV formatted file. It is available for free, and can be downloaded from our website at the Support and downloads section. Connect the BMV to the computer with the VE.Direct to USB interface, ASS030530000.

Color Control
The powerful Linux computer, hidden behind the color display and buttons, collects data from all Victron equipment and shows it on the display. Besides communicating with Victron equipment, the Color Control communicates through CAN bus (NMEA2000), Ethernet and USB. Data can be stored and analyzed on the VRM Portal. A maximum of four BMVs can be connected directly to the Color Control. Even more BMVs can be connected to a USB Hub for central monitoring.

With the VE.Direct to Bluetooth low energy (BLE) dongle real time data and alarms can be displayed on Apple and Android smartphones, tablets and other devices.
Color Control

Battery BalancerBattery Balancer (BMS012201000)
The Battery Balancer equalizes the state of charge of two series-connected 12 V batteries, or of several parallel strings of series-connected batteries. When the charge voltage of a 24 V battery system increases to more than 27 V, the Battery Balancer will turn on and compare the voltage over the two series-connected batteries. The Battery Balancer will draw a current of up to 1 A from the battery (or parallel connected batteries) with the highest voltage. The resulting charge current differential will ensure that all batteries will converge to the same state of charge. If needed, several balancers can be paralleled. A 48 V battery bank can be balanced with three Battery Balancers.