4S or 3S active balancer lifepo4 for 12V Lithium Battery with Excellent balance performance

Why does the Lithium Battery needs Balance ?

To talk about balance, we have to start with the battery. Even batteries produced in same batches by the same manufacturer have their own life cycles – the capacity of each battery can not be exactly the same. There are two main reasons for this inconsistency:

A. As Normal BMS with Balance ,it usually is a passive Balance with very small balance current , which can not handle all cells effectively in good consistency after few cycles of battery , and the active Balancer will provide an excellent performance for your battery in long run time for keep

all cells in good conditions , and the Max balance current can reach up 5A based on your cells voltage difference .

B.Inconsistency in production
The inconsistencies in production are easy to understand. For example, during the production process, the separators are inconsistent, and the cathode and anode materials are inconsistent, which resulting in inconsistencies of overall battery capacity. For example, the production standard with a batch batteries with 2.5AH , But after the production it may become 2.4 AH,also it may be 2.6AH.

This board operates on the principle of adjacent equalization for battery system ( Li ion or Lifepo4 ).  it should be applied together with Battery BMS. The pressure difference resulting from  charging and discharging  which will triggers the operation of the Balancer board to achieve energy transfer equalization.

C . Electrochemical inconsistency
Electrochemical inconsistency occurs during the battery charging and discharging process. Even if the production and processing of the two cells are exactly the same, the thermal environment can never be consistent during the electrochemical reaction. For example, when making battery modules, the surrounding temperature of battery system will be definitely lower than middle position , which will cause long-term inconsistency in charge and discharge and therefore causes inconsistency capacity with cells , and when the separator film of the battery has imbalance charging and discharging currents for a long time, the battery separator will aged.therefore takes Inconsistence.

Battery inconsistency will affect the performance of the battery pack. Battery packs which were connected in series and follows the short- board effect of the barrel. for battery pack system connected in series, the capacity of the entire battery pack is determined by the lowest cell’s capacity, which results in:
1. Reduce the actual available capacity of the entire battery pack.
2. when The life of the battery pack is reduced, and the capacity is reduced,which will need to increase more times of charge and discharge cycles to let battery work, which will short battery life further.
3. safety performance will be seriously affected when battery consistence were terrible .