--- product_id: 371801075 title: "3S 4S 12V 5A Battery Active Equalizer BMS Balancer Lipo Li-ion LFP LiFePO4 Lithium Battery Balance Active Energy Transfer Equalization Module Faster Whole Group Capacitor Balancer PCB" brand: "qinizx" price: "€ 38.08" currency: EUR in_stock: true reviews_count: 5 category: "Qinizx" url: https://www.desertcart.at/products/371801075-3s-4s-12v-5a-battery-active-equalizer-bms-balancer-lipo store_origin: AT region: Austria --- # 5.5A max balance current 2.7V-4.2V working voltage range Under-voltage sleep protection 3S 4S 12V 5A Battery Active Equalizer BMS Balancer Lipo Li-ion LFP LiFePO4 Lithium Battery Balance Active Energy Transfer Equalization Module Faster Whole Group Capacitor Balancer PCB **Brand:** qinizx **Price:** € 38.08 **Availability:** ✅ In Stock ## Summary > ⚡ Balance Smarter, Last Longer — Power Your Battery’s Full Potential! ## Quick Answers - **What is this?** 3S 4S 12V 5A Battery Active Equalizer BMS Balancer Lipo Li-ion LFP LiFePO4 Lithium Battery Balance Active Energy Transfer Equalization Module Faster Whole Group Capacitor Balancer PCB by qinizx - **How much does it cost?** € 38.08 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/371801075-3s-4s-12v-5a-battery-active-equalizer-bms-balancer-lipo) ## Best For - qinizx enthusiasts ## Why This Product - Trusted qinizx brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Sleep Mode:** Automatically powers down below 2.7V to protect battery life with standby current under 0.1mA—energy-saving and safe. - • **Built to Last & Support You:** Tested for durability, with professional customer support ready to keep your battery system balanced and optimized. - • **Plug & Play with Confidence:** Backwards compatible 3S/4S design with clear LED status indicator and optional switch control for seamless integration. - • **Powerful & Efficient Equalization:** Handles 30-200AH batteries with up to 5.5A balancing current for rapid, whole-group capacitor energy transfer. - • **Precision Balance, Zero Compromise:** Ultra-low internal resistance MOS & 2OZ copper PCB ensure 5mV voltage accuracy for peak battery health. ## Overview The 3S 4S 12V 5A Battery Active Equalizer is a high-precision capacitor energy transfer balancer designed for Li-ion and LiFePO4 batteries. Featuring ultra-low resistance MOSFETs and a thick copper PCB, it delivers up to 5.5A balancing current with 5mV accuracy, ensuring rapid and efficient battery equalization. Its smart under-voltage sleep protection and low quiescent current (<0.1mA standby) maximize battery lifespan and safety. Compatible with 3S and 4S battery packs, it includes a 400mm balance cable, LED status indicator, and optional switch control, making it a reliable, professional-grade solution for maintaining optimal battery performance. ## Description Capacitor energy transfer balance board with Balance cable (upgraded version, 5mv high precision, whole group balance, not adjacent balance) Technical Parameters: Working voltage: 2.7V-4.2V, suitable for NCM Ternary polymer lithium battery (Li-ion), lithium iron phosphate battery (LiFePO4). Working principle: Flycap-capacitor transfer charge transporter, Balancer board is connected to the battery to start the balance work, using the original brand new ultra-low internal resistance MOS, 2OZ copper thickness PCB, balance current 0-5.5A, the more balanced the battery current is Small, reserved for the dormant switch wiring position, the dormant power-off mode working current is less than 0.1mA, and the balance voltage accuracy is within 5mv! The quiescent current is about 9mA, and the battery capacity is recommended to be used between 30-200AH/Per Balancer. With under-voltage sleep protection, only detecting the battery voltage of B1, the equalizer will automatically stop entering the sleep state when the B1 voltage is lower than 2.7V, and the standby power consumption is <0.1mA. Board size: 66x46x16mm/2.6x1.8x0.63inch Balance cable length: 400mm/15.7inch One LED indicator: It will always be on during normal operation, but it will not turn on when there is a problem or malfunction. RUN pad: you can add a switch to control the balancer. Default short connect, let balancer working. if disconnect, it will not working. Tips: This balancer board is backward compatible by default. If it is used for 3S, the last line B4+ is empty. Note: 1. Please start wiring from the total negative pole, followed by B-, B1+, ... B4+.(Test per string battery voltage whether is right before connect to Balancer board). 2. The time required for equalization mainly depends on the battery capacity. Package Includes: 1x 4S Balancer Board 1x 5-Pin Cable Review: Remarkably effective - Balanced a badly unbalanced 7s3p Li-ion battery in just a couple of hours. Much more effective than resistive balancers. Review: Smoking - Wasn’t paying good attention to what I was doing, hooked it up wrong and it started smoking for a solid 2 seconds. Survived and it still works. ## Features - Working Voltage: 2.7V-4.2V, suitable for NCM Ternary polymer lithium battery (Li-ion), lithium iron phosphate battery (LiFePO4). It can Not fit LTO battery. 【NOTE Tips】Well tested by the manufacturer. As long as the wiring is correct, the product guarantees long-lasting and effective performance. Of course, if customers have any questions, they can take the initiative to contact us, we are absolutely capable of providing more professional answers, rather than a direct refund returns. - Working Principle: Flying capacitor transfer charge transporter, Balancer board is connected to the battery to start the balance work, using the original brand new ultra-low internal resistance MOS, 2OZ copper thickness PCB. Balance current 0-5.5A, the more balanced the battery current is Small, reserved for the dormant switch wiring position, the dormant power-off mode working current is less than 0.1mA, and the balance voltage accuracy is within 5mv! - The quiescent current is about 9mA, and the battery capacity is recommended to be used between 30-200AH/Per Balancer. High-capacity batteries can be connected in parallel with multiple equalizers. - With under-voltage sleep protection, only detecting the battery voltage of B1, the equalizer will automatically stop entering the sleep state when the B1 voltage is lower than 2.7V, and the standby power consumption is less than 0.1mA. - 【NOTE】: Before connect the balance cable to the balance board, be sure to check whether the connections of each section of the battery pack are correct, and do a good job of insulating the bottom of the board and the battery string connection terminals. Otherwise, it will short-circuit and burn the board. Tips: This balancer board is backward compatible by default. eg. If it is used for 3S, the last line B4+ is empty. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B096NLHXPF | | Best Sellers Rank | #18,389 in Electronics ( See Top 100 in Electronics ) #73 in Household Battery Chargers | | Brand | QINIZX | | Built-In Media | Cable, PCBA | | Color | Black | | Colour | Black | | Customer Reviews | 4.5 out of 5 stars 221 Reviews | | Input Voltage | 12 Volts | | Input voltage | 12 Volts | | Item Dimensions | 6.6 x 4.6 x 1.6 centimeters | | Item Type Name | Battery Active Balancer | | Item dimensions L x W x H | 6.6 x 4.6 x 1.6 centimeters | | Manufacturer | QINIZX | | Mfr Part Number | JW-CAP-Balancer-4S | | Model Number | JW-CAP-Balancer-4S | | Output Voltage | 12 Volts | | Output voltage | 12 Volts | | Plug Type | Type A | | Plug type | Type A | | Power Source | DC | | UPC | 723258876141 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** QINIZX - **Colour:** Black - **Input voltage:** 12 Volts - **Item dimensions L x W x H:** 6.6 x 4.6 x 1.6 centimeters - **Output voltage:** 12 Volts ## Images ![3S 4S 12V 5A Battery Active Equalizer BMS Balancer Lipo Li-ion LFP LiFePO4 Lithium Battery Balance Active Energy Transfer Equalization Module Faster Whole Group Capacitor Balancer PCB - Image 1](https://m.media-amazon.com/images/I/61Wv0GAAguL.jpg) ## Questions & Answers **Q: Can I use this with my 8s 24 volt battery pack??** A: yes, it must can use it. **Q: Will this damage sells in below freezing environments?** A: Working temperature: -10 degrees to +60 degrees **Q: Can i use this on headway 38120 8ah cells?** A: Yes, it can use it. **Q: Can the 13-17s be used for 2 individual 8s packs, one 8s on each harness side of balance board? ?** A: No, suggest buy two 8s model. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Remarkably effective *by A***Y on 6 November 2025* Balanced a badly unbalanced 7s3p Li-ion battery in just a couple of hours. Much more effective than resistive balancers. ### ⭐⭐⭐⭐⭐ Smoking *by B***Y on 3 January 2023* Wasn’t paying good attention to what I was doing, hooked it up wrong and it started smoking for a solid 2 seconds. Survived and it still works. ### ⭐⭐⭐⭐⭐ Si me funciona muy bien *by F***N on 26 October 2023* Yo el puso en un pila de 12s y 48v si hace su trabajo ## Frequently Bought Together - 3S 4S 12V 5A Battery Active Equalizer BMS Balancer Lipo Li-ion LFP LiFePO4 Lithium Battery Balance Active Energy Transfer Equalization Module Faster Whole Group Capacitor Balancer PCB - TKDMR 10pcs 1/0 AWG-3/8 Battery Lugs,Heavy Duty Wire Lugs,Ring Terminals,Battery Cable Ends,0 Guage terminals,Battery Terminal Connectors with 10pcs 3:1 Heat Shrink Tubing - Heltec 4S 5S 6S 5A Capacitor Active Equalizer Balancer Lifepo4 Lithium Lipo/Titanate LTO for Battery Car Audio Group Balancer --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.at/products/371801075-3s-4s-12v-5a-battery-active-equalizer-bms-balancer-lipo](https://www.desertcart.at/products/371801075-3s-4s-12v-5a-battery-active-equalizer-bms-balancer-lipo) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-08-05*