Victron Battery Balancer

R747.99 inc.

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The problem: the service life of an expensive battery bank can be substantially shortened due to state of charge unbalance
One battery with a slightly higher internal leakage current in a 24V or 48V bank of several series/parallel connected batteries will cause
undercharge of that battery and parallel connected batteries, and overcharge of the series-connected batteries. Moreover, when new cells
or batteries are connected in series, they should all have the same initial state of charge. Small differences will be ironed out during
absorption or equalize charging, but large differences will result in damage due to excessive gassing (caused by overcharging) of the
batteries with the higher initial state of charge and sulphation (caused by undercharging) of the batteries with the lower initial state of

The Solution: battery balancing
The Battery Balancer equalizes the state of charge of two series-connected 12V batteries, or of several parallel strings of series-connected
When the charge voltage of a 24V battery system increases to more than 27,3V, 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 0,7A 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
If needed, several balancers can be paralleled.
A 48V battery bank can be balanced with three Battery Balancers.

LED indicators
Green: on (battery voltage > 27,3V)
Orange: lower battery leg active (deviation > 0,1V)
Orange: upper battery leg active (deviation > 0,1V)
Red: alarm (deviation > 0,2V). Remains on until the deviation has reduced to less than 0,14V, or until the system, voltage drops to less than

Alarm relay
Normally open. The alarm relay closes when the red LED switches on and opens when the red LED switches off.

Alarm reset
Two terminals are available to connect a push-button. Interconnecting the two terminals resets the relay.
The reset condition will remain active until the alarm is over. Thereafter the relay will close again when a new alarm occurs.

Even more insight and control with the midpoint monitoring function of the BMV-702 Battery Monitor
The BMV-702 measures the midpoint of a string of cells or batteries. It displays the deviation from the ideal midpoint in volts or percent.
Separate deviation percentages can be set to trigger a visual/audible alarm and to close a potential-free relay contact for remote alarm
Please see the manual of the BMV-702 for more information about battery balancing.

Learn more about batteries and battery charging
To learn more about batteries and charging batteries, please refer to our book ‘Energy Unlimited’ (available free of charge from Victron
Energy and downloadable from

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Additional information

Weight 2 kg !
Shipping Dimensions L 10 × W 13.3 × H 4.7 (cm) !



Victron Energy

SKU BBA000100100
TAGS , ,



Customer Reviews

Based on 13 reviews
Louis Simenhoff

Victron Battery Balancer

Franco Labuschagne
Did receive, sadly not impressed.

Decided to go with Victron balancer as they are a renowned brand, however there were unexpected delays from LiveStainable in getting the (victron) product here. Main reason for 2-star is the product isn't great with active balancing on large battery bank with it's 0.7A draw even after a week.

To be clear, it does work - of course it depends on your setup so if you have to balance 2x 12v100ah or even 2x 12v200ah then i'm sure it will do the job perfectly fine. Feels like it's built to last.

Might deal with LiveStainable again in the future if i have time to wait. Communication response time is definitely fast and commendable.

(pic is after being removed after 1w use, didn't come with dust :P )

Leon Joubert

Victron Battery Balancer

Not really impresses

I used these to balance 4 12v batteries, in series. But I'm not really impressed as there was only a marginal improvement. I achieved far better results to just pre-charge all 4 batteries before hand, to the last 2nd decimal in volts, therefore pre-balancing them. This worked far better.
Very expensive equipment for potentially small gains.

Daniël Rossouw
Victron Battery Ballancer

Absolutely balances my inverter batteries to the 2nd decimal of the voltage reading.

Karl Camilleri
Victron battery balancer

Being Victron, this is a good quality unit, I haven't used it yet (waiting on batteries) but I have no doubt it will do it's job when the time comes.

Original price was: R7,151.87.Current price is: R6,794.28. inc.
Original price was: R12,635.77.Current price is: R12,003.98. inc.
Original price was: R21,035.77.Current price is: R19,983.98. inc.