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Heltec Active Balancer 3S-21S 5A Capacitive active equalization Active Balancer

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3S 4S 5S 6S 7S 8S 3S-21S 5A Active Equalizer Balancer Lifepo4 Lithium Lipo LTO Battery Energy active equalization Capacitor
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Heltec active balancer uses capacitive energy storage components to actively transfer the electrical energy of high-energy cells to low-energy cells, achieving dynamic redistribution of energy between cells, solving the problem of voltage/capacity imbalance of individual cells in lithium battery packs, and improving the overall performance and lifespan of the battery pack.

Technical Index

Product Model

Applicable Battery Strings

3S-4S

4S-6S

6S-8S

9S-14S

12S-16S

17S-21S

Applicable Battery Type

NCM/LFP/LTO

Working Range of Single Voltage

NCM/LFP: 3.0V-4.2V
LTO: 1.8V-3.0V

Voltage Equalization Accuracy

5mv (typical)

Balanced Mode

The whole group of battery participate in the active equalization of energy transfer at the same time

Equalizing Current

0.08V differential voltage generates 1A balance current. The bigger the differential voltage, the bigger the balance current. The maximum allowable balance current is 5.5A.

Static Working Current

13mA

8mA

8mA

15mA

17mA

16mA

Product Size (mm)

66*16*16

69*69*16

91*70*16

125*80*16

125*91*16

145*130*18

Wordking Environment Temperature

-10℃~60℃

External Power

No need for external power supply, relying on the internal energy transfer of the battery to achieve the whole group balance

 

Features：

  • All group balance
  • Max balance current 5.5A
  • Capacitive energy transfer
  • Safe and fast heat dissipation
  • Equalization current 0-5.5A, 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!
  • The quiescent current is about 12 mA. It is recommended that the battery capacity is 60-300AH.
  • 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.

Working principle

The bigger the differential voltage, the bigger the equalization current; and the more balanced the battery, the smaller the working current. This active balancer can reach the maximum equalizing current of 5.5A and the balance voltage accuracy is within 5mV. Meanwhile, it will only release less than 0.1mA current under sleep mode.

With under-voltage sleep protection, the voltage will stop automatically when the voltage is lower than 3.0V for NCM/LFP battery, and 1.8V for LTO battery. The standby power consumption is less than 0.1mA.

More versions:

1. Version for using on LTO battery by default (Welding LTO pad of Balancer 4-6S/6-8S/12-16S/9-14S/17-21S)

2. 5.5A balancer for LFP battery , stop when first cell voltage is 3.3V and start working when voltage is 3.465v

3. Add PH2.0 connector at RUN pad ,balancer is not working by default. Ship the cable together

4. Optional accessories such as display screen and casing

* We keep upgrading products to meet requirements of our clients, please contact our sales person for more accurate details.

Request For Quotation

Jacqueline: jacqueline@heltec-bms.com / +86 185 8375 6538

Nancy: nancy@heltec-bms.com / +86 184 8223 7713

 

 

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