of Battery Balancer
Why you need a Battery Balancing System
individual cells in a battery pack are rarely an exact duplicate of all the
cells in the battery pack.
actual practice, when a pack of batteries reaches a specified charge cutoff
voltage then the charger will shut off. If one cell in a pack reaches that
voltage before other cells reach a full charge it will cause the charger to
shut off – prematurely denying the balance of the pack a full charge.
when the weakest cell in a pack reaches its discharge cutoff voltage it will
show as the discharge point and shut down the pack prematurely – thereby
denying the user the balance of energy the other cells have stored.
battery equalizers prevent this from happening. This yields up to 30% more
power and will extend the life of the battery pack.
is the balancer for one single cell (1S).
example, a 12V Lifepo4 pack of 4cells in series.
use 4pcs of Li-1s-3.2v/3.7V balancers.
are the balance modules.
have 3S, 4S, 5S, 6S, 7S, 8S, 9S, and 12S modules. They can be mixed in one
example, if we have a 144v pack of 48 cells, 20 cells in one case, 28 cells in
other case, then we can use 4*5S+4*7S modules.
battery: Lifepo4, LiMnO4 etc.
AGM, Gell, Flooded
battery and so on
Energy transfer And
after using the balancer
when balance current is 1A
All the batteries share the power
together. Maximum utilize the power of the whole pack.
Many batteries are balanced at the
All batteries with higher
power will transfer power to all the lower batteries at the same time.
Other BMS can only balance 2
or 3 batteries each time. Other batteries need to wait in line.
Batteries are balanced
automatically during charging, discharging and storage.
High balance current:
Constant balance current can
be 6A, peak current 10A.
Most other BMS balance
currents are no more than 1.5A.
High accuracy of balancing:
The battery voltage
difference will be less than 10mV.
The balancers are connected to the
battery in parallel not in serial.
So it won’t affect charging
And no matter how high the
charge or discharge current is, this is no problem for the balancers.
Prevent lead acid battery
Small in size
should I use the balancer?
your batteries voltage difference within 10mV!
2. Keep your batteries safe
all the time. No overcharging or over discharging.
3. Prolong your battery lifespan 2~3 times
4. Very simple installation
5. Low price. You pay
a small amount of money to protect your battery. Compare to the
cost of replacing your expensive lithium battery, the balancer is
6. Fast delivery. 1~2 business days
after payment arrival.
does the balancer work? How does it protect batteries?
tells you how the balancer works.
Each battery is compared to a cup.
Each balancer is like a pump. With the pumps, all the cups will have the same
level of water.
The balancers are connected in
parallel to the batteries.
They won't affect the charging or
discharging of batteries.
What is the similarity and
difference between single cell (1S) balancers and balance modules?
is different. Overall speaking, balance module is smaller in size and lighter
module use less wires for installation than 1S balancer.
your pack is over 90V, we recommend balance module because of the reasons
above. Below 90V, both of them are fine.
Function is the same. Performance is the same. Price is the same. 4S module
price=4 *1S balancer price.
have 3S 5S 6S 8S 10S 12S for options. Please choose the proper model in terms
of the layout of your battery pack.
I have a BMS already. Can I still use the
You can use your BMS and the balancers together. They won’t affect each other. This
is perfect. The balancers can make up the shortcoming of BMS and improve the
consistency of your batteries.
Do they work automatically all the time(charge,
discharge, and at rest)?
work all the times automatically only if they are installed on batteries.
How can the
balancers realize the function of balancing for the batteries?
software and hardware via a Chip synchronous calibration via signal. We have
international patent for this product.
1) Power battery: electric car/bus/scooter/truck/golf
cart/boat and so on
Storage battery: storage power station, wind power, solar power and so on
Communication power: communication base stations, substations, etc.
An example of 4S balance module wiring diagram
All the balancers are connected to the batteries in parallel.
If you are not sure how to connect them, please
First, if you order 1S balancers, we
have 20cm wires on the balancers with M8 terminals as default like the picture below.
If you need other size of terminals
and different length of wires, please tell us.
If you order balance modules, no terminals or wires.
balance power consumption is less than 50mW.
don’t use the battery for a long time, please either disconnect the balancers,
or recharge the battery once a month or once two months.
the batteries occasionally is better for your batteries as well.
have a wiring diagram on the balance modules. Don’t make any mistakes. If you are
unsure of installation, please contact our sales person. We will be glad to
several ways of making a judgment where you install them correctly or not.
Measure voltage of the batteries
with a multi-meter after you finish installation. See if all the batteries
voltage is normal or not.
Touch the batteries. If
any battery gets hot quickly, disconnect the balancers soon. This means you
install them in the wrong way. If you find the mistake in a few minutes, the
battery won’t be broken.
Listen. If the balancers
are connected correctly, they will produce a high-frequency voice. The voice is
small. you need to get close to the balancers. The more balanced the batteries
are, the smaller the balance current it will have, and the smaller voice there
will be and vice versa. If you connect them in wrong way, you can’t hear any
Fourth, you must connect the balance wires (see picture below) first, and then
connect other wires to the batteries. Don't do it oppositely.
After you finish installation for a pack, don't remove any one of the module. They are a
your batteries are out of balance and weren’t installed with balancers before, please
be patient when you start using the balancers. The balancers will help
improve the battery consistency gradually but not immediately. If any one of
your battery is defective, the balancer can’t save it. If you start using the
balancer when your battery is new, the performance is the best.