---
product_id: 558106988
title: "Heltec Automation 4S 5S 6S 5A Capacitor Active Equalizer Balancer Lifepo4 Lithium Lipo/Titanate LTO for Battery Car Audio Group Balancer"
brand: "heltec automation"
price: "$9"
currency: NZD
in_stock: false
reviews_count: 5
url: https://www.desertcart.nz/products/558106988-heltec-automation-4s-5s-6s-5a-capacitor-active-equalizer-balancer
store_origin: NZ
region: New Zealand
---

# 1.8-4.5V working voltage 0-5.5A active balancing current 2OZ copper PCB for ultra-low resistance Heltec Automation 4S 5S 6S 5A Capacitor Active Equalizer Balancer Lifepo4 Lithium Lipo/Titanate LTO for Battery Car Audio Group Balancer

**Brand:** heltec automation
**Price:** $9
**Availability:** ❌ Out of Stock

## Summary

> 🔋 Keep your battery pack in perfect sync — because imbalance is so last season!

## Quick Answers

- **What is this?** Heltec Automation 4S 5S 6S 5A Capacitor Active Equalizer Balancer Lifepo4 Lithium Lipo/Titanate LTO for Battery Car Audio Group Balancer by heltec automation
- **How much does it cost?** $9 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/558106988-heltec-automation-4s-5s-6s-5a-capacitor-active-equalizer-balancer)

## Best For

- heltec automation enthusiasts

## Why This Product

- Trusted heltec automation brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Robust Compatibility:** Works seamlessly with LiFePO4, LTO, and ternary lithium chemistries
- • **Built for High Capacity:** Optimized for 60-300Ah batteries, ideal for pro-grade power setups
- • **Precision Voltage Harmony:** Balances cells within ±5mV for peak battery performance
- • **Ultra-Efficient Power Use:** Sleep mode drops current below 0.1mA to save energy when idle
- • **Continuous Active Equalization:** Keeps your battery cells perfectly synced 24/7, no downtime

## Overview

The Heltec Automation 4S-6S Capacitor Active Equalizer is a cutting-edge battery balancer designed for lithium-based chemistries including LiFePO4, LTO, and ternary lithium. Operating between 1.8V and 4.5V with up to 5.5A balancing current, it continuously equalizes cell voltages within 5mV accuracy using a capacitor charge transfer method. Featuring a robust 2OZ copper PCB for ultra-low resistance and ultra-low quiescent current (<0.1mA in sleep mode), it’s optimized for 60-300Ah battery packs, making it perfect for high-performance power tools, car audio systems, and DIY energy storage solutions.

## Description

Heltec BMS 4-6S Capacitance Active Balancer for Car Audio Lithium Batteries This Listing Includes: (1) Capacitance Active Balancer Features: - Working voltage: 1.8V-4.5V - Suitable for ternary lithium, lithium iron phosphate, lithium titanate. - The whole battery participates in the active equalization of energy transfer at the same time - 0.1V differential voltage 1A equalizing current. The differential voltage is bigger than equalizing current is bigger. The maximum allowable working current is 5.5A - Working principle, the capacitor fit transfers the charge mover, the equalization board is connected to the battery, and the equalization is started. The original new ultra-low internal resistance MOS, 2OZ copper thickness PCB - Equilibrium 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.

Review: I bought this to balance some LiFePo battery cells I made. The cells I used were A123 B series configured as 12 Volts in an 3x 4S24P array giving about 180Ah capacity. Which is in the right range for this device. The principle of operation is what I liked. Capacitive charge carriers are simple, efficient and reliable. They do not make actual measurements of voltage. They basically charge a capacitor over one cell and then discharge it to another. Repeat over all the cells many times using a small charge (the capacitance) means it provides a regular balancing current. Because of the way it works it does not need to know anything about the battery. All its doing is moving charge till there is next to zero volts difference between the cells. Once this is achieved the current drops to zero as the capacitors and the cells will all be at the same voltage. Net result is very good balance and low power consumption when balanced (quiescent current). This particular one stops balancing below a certain cell voltage to avoid discharge related issues. The bonus with this technique is that it does cell balancing all the time unless you switch it off. So you get continuous balance as opposed to top or bottom balancing. I've not had it on for long so long term reliability I can't comment on, but there is not much to go wrong so long as the capacitors are higher quality. This is pretty easy to do now given the proliferation of switching supplies in the market so is cheap and well understood. I doubt I will have issues long term. Gave it five stars as it does exactly what it says it does, does it well and uses a good technique to do so.
Review: I have 4 DIY lifepo4 batteries in parallel, about 1100 amp hours at 12 v. The system was built as an experiment, and it stays between about 40% and 70% charge most of the time. It offers several days of use with little to no sun from my solar panels. When I put the system together, I did a top balance, as is standard for solar. After a few years of use now, at about 50% charge, I would have one cell in each of 3 batteries drop rapidly to below 2.6. It turns out, after some reading, that I should have bottom balanced these, since they rarely see 100% charge. I decided to skip the disassembly phase and just get some Heltec active balancers. They have done the trick. In about a week, they have brought the cells back into balance, with less than 10mv of delta on 3 of 4 batteries, and about 23mv of delta on the final, all 272 ah cells. They were going quite high beforehand, over 250mv at times. I think the cells are fine, just balanced wrong, but time will tell. these blancers are a great addition to my system. I had to desolder the solder bridge from the LTO pads and solder it to the LFP/NMC side on all the boards. I wish they would make the pads for the "Run" switch through-hole instead of surface mount. I tried soldering some leads for a switch to the board, but I could not get a trustworthy connection on those pads, so I put the run bridge back. If I add a switch in the future, i will probably just put it in the battery negative line.

## Features

- Brand: Heltec Automation
- Battery Cell composition: lithium_titanate
- Recommended uses for product: Power Tool
- Reusability: Single Use
- Voltage: 1.8 volts

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08JCL4G2X |
| Item model number | 6S-BALANCER |
| Manufacturer | Heltec automation |
| Product Dimensions | 17.78 x 12.7 x 5.08 cm; 56.7 g |

## Product Details

- **Battery capacity:** 300 Amp Hours
- **Battery cell composition:** Lithium-Titanate
- **Brand:** Heltec Automation
- **Recommended uses for product:** Power Tool
- **Unit count:** 1.0 Count

## Images

![Heltec Automation 4S 5S 6S 5A Capacitor Active Equalizer Balancer Lifepo4 Lithium Lipo/Titanate LTO for Battery Car Audio Group Balancer - Image 1](https://m.media-amazon.com/images/I/41U3OYb7rWL.jpg)
![Heltec Automation 4S 5S 6S 5A Capacitor Active Equalizer Balancer Lifepo4 Lithium Lipo/Titanate LTO for Battery Car Audio Group Balancer - Image 2](https://m.media-amazon.com/images/I/41bsAApqqFL.jpg)
![Heltec Automation 4S 5S 6S 5A Capacitor Active Equalizer Balancer Lifepo4 Lithium Lipo/Titanate LTO for Battery Car Audio Group Balancer - Image 3](https://m.media-amazon.com/images/I/51+gnNk4hkL.jpg)
![Heltec Automation 4S 5S 6S 5A Capacitor Active Equalizer Balancer Lifepo4 Lithium Lipo/Titanate LTO for Battery Car Audio Group Balancer - Image 4](https://m.media-amazon.com/images/I/51cY9D7PcYL.jpg)
![Heltec Automation 4S 5S 6S 5A Capacitor Active Equalizer Balancer Lifepo4 Lithium Lipo/Titanate LTO for Battery Car Audio Group Balancer - Image 5](https://m.media-amazon.com/images/I/6177CHbJJnL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by R***A on 10 August 2023*

I bought this to balance some LiFePo battery cells I made. The cells I used were A123 B series configured as 12 Volts in an 3x 4S24P array giving about 180Ah capacity. Which is in the right range for this device. The principle of operation is what I liked. Capacitive charge carriers are simple, efficient and reliable. They do not make actual measurements of voltage. They basically charge a capacitor over one cell and then discharge it to another. Repeat over all the cells many times using a small charge (the capacitance) means it provides a regular balancing current. Because of the way it works it does not need to know anything about the battery. All its doing is moving charge till there is next to zero volts difference between the cells. Once this is achieved the current drops to zero as the capacitors and the cells will all be at the same voltage. Net result is very good balance and low power consumption when balanced (quiescent current). This particular one stops balancing below a certain cell voltage to avoid discharge related issues. The bonus with this technique is that it does cell balancing all the time unless you switch it off. So you get continuous balance as opposed to top or bottom balancing. I've not had it on for long so long term reliability I can't comment on, but there is not much to go wrong so long as the capacitors are higher quality. This is pretty easy to do now given the proliferation of switching supplies in the market so is cheap and well understood. I doubt I will have issues long term. Gave it five stars as it does exactly what it says it does, does it well and uses a good technique to do so.

### ⭐⭐⭐⭐⭐ Review
*by D***. on 17 October 2023*

I have 4 DIY lifepo4 batteries in parallel, about 1100 amp hours at 12 v. The system was built as an experiment, and it stays between about 40% and 70% charge most of the time. It offers several days of use with little to no sun from my solar panels. When I put the system together, I did a top balance, as is standard for solar. After a few years of use now, at about 50% charge, I would have one cell in each of 3 batteries drop rapidly to below 2.6. It turns out, after some reading, that I should have bottom balanced these, since they rarely see 100% charge. I decided to skip the disassembly phase and just get some Heltec active balancers. They have done the trick. In about a week, they have brought the cells back into balance, with less than 10mv of delta on 3 of 4 batteries, and about 23mv of delta on the final, all 272 ah cells. They were going quite high beforehand, over 250mv at times. I think the cells are fine, just balanced wrong, but time will tell. these blancers are a great addition to my system. I had to desolder the solder bridge from the LTO pads and solder it to the LFP/NMC side on all the boards. I wish they would make the pads for the "Run" switch through-hole instead of surface mount. I tried soldering some leads for a switch to the board, but I could not get a trustworthy connection on those pads, so I put the run bridge back. If I add a switch in the future, i will probably just put it in the battery negative line.

### ⭐⭐⭐⭐⭐ Review
*by F***Z on 4 September 2025*

Great quality works just fine

## Frequently Bought Together

- Heltec 4S 5S 6S 5A Capacitor Active Equalizer Balancer Lifepo4 Lithium Lipo/Titanate LTO for Battery Car Audio Group Balancer
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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-22*