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Capacitive Balancer

Active Balancer 3-21S 5A battery equalizer for LiFePO4/LiPo/LTO

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

Specifications

  • 3-4S
  • 4-6S
  • 6-8S
  • 9-14S
  • 12-16S
  • 17-21S

Product Information

Brand Name: Heltecbms
Certification: FCC
Origin: Mainland China
Warranty: One year
MOQ: 1 pc
Battery Type: LifePo4/Lipo/LTO
Balance type: Capacitive Energy Transfer / Active Balancing

Customization

  • Customized logo(Min. order 1000 pieces)
  • Customized packaging(Min. order 1000 pieces)
  • Graphic customization(Min. order 1000 pieces)

Package

1.5A active balancer *1set.
2.Antistatic bag, antistatic sponge and corrugated case.
3.With acrylic protective case(Optional).

heltec-5a-5.5a-active-balancer-3s-21s-24v-48v-battery-equalizer
heltec-5a-5.5a-active-balancer-48v-battery-equalizer
heltec-active-capacitive-balancer-all

Purchase Details

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

Features

  • All group balance
  • Max balance current 5.5A
  • Capacitive energy transfer
  • Safe and fast heat dissipation

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.

Model Selection

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

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

Updated Versions

Take the standard 3-4S 5A Balancer (0855A) as example to demonstrate the updated versions of our 5A active balancer. Most of the balancers can be customized. Please contact our sales person for your own application.

SKU

Definition

0885A

Standard version.

0855C

For LTO battery only. (not for NCM/LFP)

0855D

Stop balancing when cell 1 (the first cell of the first string) is 3.3V; and when it reaches 3.456V, re-start balancing.

0855PH2

PH2.0 connector instead of RUN point, balancer not in work by default. Wires can be connected to a switch or any BMS, so you can control the on and off of this balancer.

For example:

You have 16S LFP/NCM cells, and you want the balancer to stop balancing when cell 1 (the first cell of the first string) is 3.3V; and when it reaches 3.456V, re-start balancing. You can choose our 0999A16D balancer.

It has the same appearance as standard version but changed in chips design.

You have 6S LTO cells, you can choose our 1004C balancer. It’s specially designed for 6S LTO battery.

comparison

You have 4S LFP cells and you want to be able to control the on and off of the balancer, you can choose our 0855PH2 balancer. Connect the other end of the additional red wire to a switch or soldered to your BMS, you can turn the balancer on and off without keeping it working all the time.

packing-0855ph2
heltec-0855ph2-connector-balancer
heltec-5a-balancer-with-ph2.0-connector

Accessories

TFT-LCD Display (with voltage collection function)

(Only 4S version available now)

tft-lcd-display
balancer-with-display

It is connected directly to the battery and can be used in parallel with any balancer or protection board. It displays the voltage of each string and the total voltage. Regarding accuracy, the typical accuracy is ±5mV at room temperature around 25°C, and the accuracy is ±8mV in the wide temperature range of -20~60°C. The direction of voltage deviation cannot be guaranteed to be consistent.

Acrylic Protective Case (All versions available)

heltec-active-balance-capacitive-battery-equalizer-with-acrylic-protective-case
heltec-capacitive-active-balancer-with-acrylic-protective-case

ABS Shell (All versions available)

ABS-shell (3)
ABS-shell (15)

Installation Video


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