Capacitive Balancer

Active Balancer 3-4S 3A Battery Equalizer with TFT-LCD Display

As the number of battery cycles increases, the rate of battery capacity decay is inconsistent, leading to a serious imbalance in battery voltage. The “battery barrel effect” will influence the service life of your battery. That’s why you need a active balancer for your battery packs.

Different from inductive balancer, capacitive balancer can achieve the whole group balance. It doesn’t need voltage difference between adjacent batteries to start balancing. After the device is activated, each battery voltage will reduce the capacity decay caused by the battery barrel effect and prolong the duration of the problem.

Product Detail

Product Tags


3-4S 3A Active Balancer

3-4S 3A Active Balancer with TFT-LCD Display

Product Information

Brand Name: HeltecBMS
Material: PCB board
Certification: FCC
Origin: Mainland China
Warranty: One year
MOQ: 1 pc
Battery Type: LFP/NMC
Balance type: Capacitive Energy Transfer / Active Balance


  • Customized logo
  • Customized packaging
  • Graphic customization


1. 3A active balancer *1set.

2. Anti-static bag, anti-static sponge and corrugated case.

3. TFT-LCD display (Optional).


Purchase Details

  • Shipping From:
    1. Company/Factory in China
    2. Warehouses in United States/Poland/Russia/Spain/Brazil
    Contact Us to negotiate shipping details
  • Payment: TT is recommended
  • Returns & Refunds: Eligible for returns and refunds


  • All group balance
  • Balance current 3A
  • Capacitive energy transfer
  • Fast speed, not hot


  • Working voltage: 2.7V-4.5V.
  • Suitable for ternary lithium, lithium iron phosphate, lithium titanate.
  • Working principle, the capacitor fit transfers the charge mover. Connected the balancer to the battery, and the balancing will started. The original new ultra-low internal resistance MOS, 2OZ copper thickness PCB.
  • Balancing current 0-3A, the more balanced the battery, the smaller the current, with manual sleep switch, sleep current mode is less than 0.1mA, the balance voltage accuracy is within 5mv.
  • With under-voltage sleep protection, the voltage will stop automatically when the voltage is lower than 3.0V, and the standby power consumption is less than 0.1mA.

TFT-LCD Voltage Collection Display

  • This display is used to collect battery voltage 1-4S.
  • Display can be flipped up and down through switches.
  • Connect directly to the battery and can be used in parallel with any balancer or BMS.
  • Displays the voltage of each string and the total voltage.
  • Regarding the accuracy, the typical accuracy at room temperature around 25°C is ± 5mV, and the accuracy at wide temperature range -20~60°C is ±8mV.





  • Previous:
  • Next: