Victron Battery Balancer
Input voltage range
Turn on level
Turn off level
Current draw when off
Midpoint deviation to start balancing
Maximum balancing current
Alarm trigger level
Alarm reset level
Alarm relay
Alarm relay reset
Over temperature protection
Operating temperature
Humidity (non-condensing)
ENCLOSURE
Colour
Connection terminals
Protection category
Weight
Dimensions (h x w x d)
STANDARDS
Safety
Emission
Immunity
Automotive Directive
Installation
1)
The Battery Balancer(s) must be installed on a well-ventilated vertical
surface close to the batteries (but, due to possible corrosive gasses,
not above the batteries!)
2)
In case of series-parallel connection, the midpoint
interconnecting cables must be sized to at least carry the current
that arises when one battery becomes open-circuited.
- In case of 2 parallel strings: cross section 50% of the series
interconnecting cables.
- In case of 3 parallel strings: cross section 33% of the series
interconnecting cables, etc.
3)
If required: first wire the alarm contact and the alarm reset.
4)
Use at least 0,75 mm² to wire the negative, positive and midpoint
connections (in this order). Additionally, if in your application it is
needed to comply with UL, also fuse these wires near the batteries
with a 10A fuse suitable for DC current (e.g. Littelfuse ATOF series
automotive blade fuse in combination with an inline fuse holder).
5)
The balancer is operational.
When the voltage over a string of two batteries is less than 26,6V the
balancer switches to standby and all LEDs will be off.
When the voltage over a string of two batteries increases to more than
27,3V (during charging) the green LED will turn on, indicating that the
balancer is on.
When on, a voltage deviation of more than 50 mV will start the
balancing process and at 100 mV one of the two orange LEDs will turn
on. A deviation of more than 200 mV will trigger the alarm relay.
What to do in case of an alarm during charging
In case of a new battery bank the alarm is probably due to differences in
initial state-of-charge. If the difference between the lowest and highest
battery voltage reading is more than 0,9V: stop charging and charge the
individual batteries or cells separately first, or reduce charge current
substantially and allow the batteries to equalize over time.
If the problem persists after several charge-discharge cycles:
a)
In case of series-parallel connection disconnect the midpoint parallel
connection wiring and measure the individual midpoint voltages during
absorption charge to isolate batteries or cells which need additional
charging, or:
b)
Charge and then test all batteries or cells individually or:
c)
Connect two or more battery balancers in parallel (on average one
balancer will take care of up to three parallel 200 Ah strings).
In case of an older battery bank which has performed well in the past, the
problem may be due to:
d)
Systematic undercharge: more frequent charging needed (VRLA
batteries), or equalization charge needed (flooded deep cycle flat
plate or OPzS batteries). Better and regular charging will solve the
problem.
e)
One or more faulty cells: replace all batteries.
Victron Energy B.V. | De Paal 35 | 1351 JG Almere | The Netherlands
General phone: +31 (0)36 535 97 00 | E-mail:
www.victronenergy.com
Up to 18V per battery, 36V total
27,3V +/- 1%
26,6V +/- 1%
0,7 mA
50 mV
0,7A (when deviation > 100 mV)
200 mV
140 mV
60V / 1A normally open
Two terminals to connect a push button
yes
-30 to +50°C
95%
Blue (RAL 5012)
Screw terminals 6 mm² / AWG10
IP22
0,4 kg
100 x 113 x 47 mm
EN 60950, CSA/UL 62368-1
EN 61000-6-3, EN 55014-1
EN 61000-6-2, EN 61000-6-1, EN 55014-2
EN 50498
sales@victronenergy.com
Battery Balancer connected to six series-parallel
connected 12V batteries (24V system)
Three Battery Balancers connected to 12 series-parallel
connected 12V batteries (48V system)