Victron Energy BMV 702 Precision Battery Monitor

Victron Energy BAM010702000 BMV 702 Precision Battery Monitor

On sale ~~$210.00~~ $178.50

The BMV 702 keeps track of current flowing in and out of a battery bank and uses a sophisticated algorithm to read out the state of charge of the battery. You can add the optional temperature sensor to read battery temperature, or you can use the second input to read voltage of an auxiliary battery.

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p/n: BAM010702000

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This is the latest version of the BMV Amp Hour Meter, now called the BMV702. It replaces the BMV602 that went before it by adding some new features (see below) It keeps track of current flowing in and out of a battery bank and uses a sophisticated algorithm to read out the state of charge of the battery in Percentage Remaining and Amp Hours Remaining. It also displays Volts and Amps, time to go, and Consumed Energy and keeps track of Historic Data including Battery Efficiency, Average Discharge, Deepest Discharge, Number of Cycles, Overvoltage, and Undervoltage Alarms.

Victron Energy BMV 702 battery monitor

Monitors volts, amps, amp hours and time to go for a single battery bank.

See our article: All about amp hour meters

Reads voltage (only) for a second bank.

Included shunt measures up to 500 Amps

For use with DC systems from 12 to 90 volts

Visual and audible alarms and programmable alarm

10 meter cable, connectors and fuse included.

Q: What is the difference between the Victron BMV-700 and the BMV-702?

Asked by: Richard - 10/23/2016

A: The BMV 702 has an additional channel that can be used for various purposes. The most common use is it can monitor the voltage of an additional battery like a starting battery. You can also use it to monitor the mid point voltage of a battery bank, or if you purchase the temperature sensor accessory you can use it to monitor battery temperature. You have to push a few buttons to program the BMV to tell it what you are using the extra channel for.

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Answer provided by: Peter Kennedy (10/24/2016)

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Q: Even though the website says this monitor is only for use with 12 - 90 VDC, could I use it to monitor two 6VDC batteries in series? If I did that, what would it tell me? I need to know the amp-hours remaining. Thanks.

Asked by: Antti Koskelo - 11/3/2015

A: It can monitor two 6 volt batteries in series as that constitutes a 12 volt bank. In this case the total amp hours of the bank is the same as the amp hours of a single battery. So for example with golf cart batteries of 225 amp hours putting two in series still only gets you a 225 amp hour battery bank.

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Answer provided by: Peter Kennedy (11/4/2015)

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Q: will this item work if my battery bank is much bigger then 500 amp/hr? say 1500amp/hr

Asked by: davross - 6/21/2015

A: The battery capacity is programmable within the range 20 - 9999 Amp Hours
The current is limited to 500 Amps with the included shunt but other shunts are available to increase this limit considerably

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Answer provided by: Peter Kennedy (6/23/2015)

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Q: the description tab states "It keeps track of current flowing in and out of a battery bank" will it report charing info (current flow ) from Solar and Inverter thus eliminating a Solar monitor?

Asked by: billzona - 6/2/2017

A: It reports the net inflow or outflow from the battery, that is the difference between what is going in and what is coming out. So although this information is what you need from the battery point of view it doesnt tell you how much of this can be attributed to any particular source or load. In other words if you also want to know what your solar is doing keep your solar monitor.

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Answer provided by: Peter Kennedy (6/3/2017)

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Q: If the temp sensor option used, can it be used to adjust the output voltage of a controller, such as the MPPT 75/15? My concern is the batteries are mounted in a box that could be considerably different in temperature than the controller itself, so the built in temp compensation may not be adequate.

Asked by: Vic - 11/9/2016

A: This particular temperature sensor is only used for monitoring and doesn't control anything.

Some Victron products (such as the Multi-Plus Inverter Chargers) come with a temperature sensor that actively controls charging. Some of the larger MPPT solar charge controllers (such as the MPPT 150/70) also come with an external temperature sensor that controls charging. The smaller charge controllers cannot accommodate a temperature sensor.

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Answer provided by: Peter Kennedy (11/9/2016)

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Q: I would like to install this on a powerboat to monitor my 24v battery bank for trolling. Is this meter waterproof or does it need to be mounted in a dry location?Also, can it monitor more than one bank. In other words, I would like to switch between the 24v bank, the starting battery and the house battery.

Asked by: Larry Troesh - 4/20/2020

There are two parts to this meter: the shunt, which goes beside the battery, and the meter display, which can go anywhere. There is a supplied 10 m (30 ft) cable to go between them. Neither of the parts are waterproof and the shunt is particularly vulnerable to damp and corrosion because it has an exposed circuit board. Both parts need to be mounted in a dry location. If you look at the listing for the BMV 700 you will see a photo in the "additional information" tab of an enclosure that one of my customers built to accommodate the shunt.

This meter can measure amps, volts, amp hours and time to go of a primary battery and voltage only of an auxiliary battery. It doesn't matter if the aux battery is the same voltage or not.

Note that if you opt for one of the Bluetooth models you can look at the information on your phone and that would allow you to mount the actual display in a dry area (BMV 712) or not have a display at all (SmartShunt)

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Answer provided by: Peter Kennedy (4/20/2020)

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Q: Where would the shunt typically be mounted? Is there a cable for the voltage reading?

Asked by: Will - 5/3/2018

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Battery monitor	BMV 702
Supply voltage range	6,5 - 95 VDC
Current draw, back light off	< 4 mA
Input voltage range, auxiliary battery	6,5 - 95 VDC
Battery capacity (Ah)	20 - 9999 Ah
Operating temperature range	-20 +50°C(0 - 120°F)
Measures voltage of second battery, or temperature, or midpoint	Yes
Temperature measurement range	-20+50°C
VE.Direct communication port	Yes
Relay	60V/1A normally open (function can be inverted)
Resolution & Accuracy (with a 500 A shunt)
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 & Dimensions
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)
Standards
Safety	EN 60335-1
Emission / Immunit	EN 55014-1 / EN 55014-2
Automotive	ECE R10-4 / EN 50498
Accessories
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 Energy BAM010702000 BMV 702 Precision Battery Monitor

Q: What is the difference between the Victron BMV-700 and the BMV-702?

Q: Even though the website says this monitor is only for use with 12 - 90 VDC, could I use it to monitor two 6VDC batteries in series? If I did that, what would it tell me? I need to know the amp-hours remaining. Thanks.

Q: will this item work if my battery bank is much bigger then 500 amp/hr? say 1500amp/hr

Q: the description tab states "It keeps track of current flowing in and out of a battery bank" will it report charing info (current flow ) from Solar and Inverter thus eliminating a Solar monitor?

Q: Where would the shunt typically be mounted? Is there a cable for the voltage reading?

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