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4Series-12v, 5S-15v, 6S-18v Lithium Options - Specification of Battery Balancer
4Series-12v, 5S-15v, 6S-18v Lithium Options - Specification of Battery Balancer

Specification of Battery Balancer

Price for 1 Each: $0.00
Item ID:Battery Specification

Specification of Battery Balancer

Order the 3V 1S Balancer Here

Order the 12V 4S Balancer Here

Order the 24V 8S Balancer Here

Why you need a Battery Balancing System

The individual cells in a battery pack are rarely an exact duplicate of all the cells in the battery pack.

In 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.

Conversely 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.

These battery equalizers prevent this from happening. This yields up to 30% more power and will extend the life of the battery pack.

Battery Models - Specification of Battery Balancer


Connectec LiFePO4 LiMn2O4 Battery Voltage Balancer


This is the balancer for one single cell (1S).

For example, a 12V Lifepo4 pack of 4cells in series.

Can use 4pcs of Li-1s-3.2v/3.7V balancers.


3S 4S 5S 6S 7S 8S and 9S Modules - Specification of Battery Balancer


Battery Voltage Balancer eV Solar Emergency 38V 50-1000Ah


These are the balance modules.

We have 3S, 4S, 5S, 6S, 7S, 8S, 9S, and 12S modules. They can be mixed in one pack.

For 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.


Main technical parameters


Battery capacity limited

20ah~1000ah lithium battery: Lifepo4, LiMnO4 etc.

AGM, Gell, Flooded battery and so on

Working voltage


Battery count limited


Power consumption


Balance method

Energy transfer And Dynamic

Acceptable Constant balance current


Peak balance current


Voltage difference after using the balancer


Working efficiency when balance current is 1A


Working temperature


Storage temperature



Key features


Power Sharing:

All the batteries share the power together. Maximum utilize the power of the whole pack.

Many batteries are balanced at the same time:

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.

Dynamic balance:

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 or discharging.

And no matter how high the charge or discharge current is, this is no problem for the balancers.


Prevent lead acid battery vulcanization


Small in size


Small in Size - Specification of Battery Balancer




Small in Size Balancer Laying Flat - Specification of Battery Balancer


Balancer Module - Specification of Battery Balancer


Why should I use the balancer?


1. Keep 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 very cheap.

6. Fast delivery. 1~2 business days after payment arrival.


How does the balancer work? How does it protect batteries?

This diagram 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.

Balancer Working Theory


What is the similarity and difference between single cell (1S) balancers and balance modules?


1. Size is different. Overall speaking, balance module is smaller in size and lighter in weight.

2. Balancer module use less wires for installation than 1S balancer.

3. When your pack is over 90V, we recommend balance module because of the reasons above. Below 90V, both of them are fine.

4. Similarity: Function is the same. Performance is the same. Price is the same. 4S module price=4 *1S balancer price.

5. We 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 balancers?

Yes sure. 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)?


Yes, they work all the times automatically only if they are installed on batteries.


How can the balancers realize the function of balancing for the batteries?


Via software and hardware via a Chip synchronous calibration via signal. We have international patent for this product.


Questions and Answers - Specification of Battery Balancer




1) Power battery: electric car/bus/scooter/truck/golf cart/boat and so on

2) Storage battery: storage power station, wind power, solar power and so on

3) Communication power: communication base stations, substations, etc.



An example of 4S balance module wiring diagram

Batteries in Parallel - Specification of Battery Balancer


All the balancers are connected to the batteries in parallel.

If you are not sure how to connect them, please contact us.




First, if you order 1S balancers, we have 20cm wires on the balancers with M8 terminals as default like the picture below.


M8 Terminals - Specification of Battery Balancer6V Balancer for Lead Acid Battery - Specification of Battery Balancer


If you need other size of terminals and different length of wires, please tell us.

If you order balance modules, no terminals or wires.


Second, the balance power consumption is less than 50mW.

If you 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.

Recharging the batteries occasionally is better for your batteries as well.


Third, we 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 help you.

Here are several ways of making a judgment where you install them correctly or not.

  1. Measure voltage of the batteries with a multi-meter after you finish installation. See if all the batteries voltage is normal or not.

  2. 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.

  3. 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 voice.

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 whole system.

Fifth, if 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.


Balance Wires - Specification of Battery Balancer


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