--- product_id: 502041409 title: "3S 4S 12V 5.5A Battery Active Equalizer Balancer Energy Transfer Board" brand: "qinizx" price: "£24.84" currency: GBP in_stock: true reviews_count: 12 category: "Qinizx" url: https://www.desertcart.co.uk/products/502041409-3s-4s-12v-5-5a-battery-active-equalizer-balancer-energy store_origin: GB region: United Kingdom --- # 5.5A high balance current Supports 3S & 4S Li-ion/LiFePO4 Ultra-low quiescent current <0.1mA 3S 4S 12V 5.5A Battery Active Equalizer Balancer Energy Transfer Board **Brand:** qinizx **Price:** £24.84 **Availability:** ✅ In Stock ## Summary > ⚡ Balance smarter, last longer — power your pack like a pro! ## Quick Answers - **What is this?** 3S 4S 12V 5.5A Battery Active Equalizer Balancer Energy Transfer Board by qinizx - **How much does it cost?** £24.84 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/502041409-3s-4s-12v-5-5a-battery-active-equalizer-balancer-energy) ## 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 - • **Robust Build Quality:** 2OZ copper PCB & ultra-low resistance MOS ensure reliable, long-term performance - • **Energy-Efficient Design:** Dormant mode power draw under 0.1mA saves battery life - • **Precision Cell Balancing:** Achieve voltage accuracy within 5mV for peak battery health - • **User-Controlled Operation:** RUN pad switch and LED indicator for intuitive status monitoring - • **Wide Battery Compatibility:** Seamlessly works with NCM, LiFePO4 & Li-ion chemistries (3S/4S) ## Overview The 3S 4S 12V 5.5A Battery Active Equalizer Balancer is a cutting-edge energy transfer board designed for advanced lithium battery management. Compatible with NCM ternary polymer, LiFePO4, and Li-ion batteries, it delivers precise balancing with up to 5.5A current and voltage accuracy within 5mV. Featuring ultra-low quiescent current (<0.1mA) and a user-friendly RUN pad switch with LED status indicator, this balancer optimizes battery lifespan and performance. Its robust 2OZ copper PCB and MOSFET components ensure durability, making it a must-have for professionals seeking efficient, reliable battery equalization. ## Description desertcart.com: 3S 4S 12V 5.5A Battery Active Equalizer Balancer Energy Transfer Board | Lifepo4 LFP Lipo Li-ion Lithium Compatible, Whole Group Balancer, Active Energy Transfer Equalization, Protective Case : Musical Instruments Review: Good cell balancer for tool battery. - Balanced my M18 12Ah overnight from 150mV to within 5mV. Very happy as the design brings the cells into equilibrium in lieu of designs that bring everything to the lowest cell voltage. At start I measured just over 20mA of current. Was surprised to find the next morning everything was balanced. It has a run light that was still on in the morning. Idk if it was still balancing but good enough. This was a battery I replaced 2 bad cells in. Nice for money. No frills, need a meter to confirm results. Review: I wish these had been available 20 years ago!!!! - These things are amazing. They do a better (more accurate, and faster) job of balancing than my balancing chargers, and can be used for pre-charge, during charge and post charge balancing. I never liked using BMSes on my battery packs, preferring just to monitor conditions closely to get away with using simpler systems, fewer components to break down and the ability to over-power for short periods. I sure wish these had been available 20 years ago when I was actively building a lot of E-bikes and other battery operated systems. They would have made life much easier. Now, if the company would make similar modules that would balance 6 Volt Lead Acid battery arrays, I could vastly improve my solar power system for a reasonable cost. :-) ## Features - Wide Voltage Compatibility: Working Voltage 2.7V-4.2V, suitable for NCM Ternary polymer lithium battery (Li-ion), lithium iron phosphate battery (LiFePO4), Not Fit Lithium Titanate. It can be used in parallel with BMS protection board. The default protective case is a kit, not assembled, the transparent acrylic case has a yellow protective film that can be peeled off - Advanced Balancing Technology: 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 - Efficient Power Management: The Quiescent Current is about 12mA, and the battery capacity is recommended to be used between 30-300AH/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 - User-Friendly Control Features: RUN Pad allows you to add a switch to control the balancer. Default short connect, let balancer working. if disconnect, it will not working. One LED indicator will always be on during normal operation, but it will not turn on when there is a problem or malfunction. Equipped with VH3.96 terminal by default, come with 1.31ft 18awg wire - Important Installation Guidelines: 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. This balancer board is backward compatible by default, if it is used for 3S, the last line B4+ is empty ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BM77J1BQ | | Best Sellers Rank | #6,004 in Musical Instruments ( See Top 100 in Musical Instruments ) #1 in Equalizers & Feedback Controllers | | Brand | QINIZX | | Color | Yellow | | Customer Reviews | 4.6 out of 5 stars 278 Reviews | | Input Voltage | 12 volts | | Item Dimensions | 2.6 x 1.8 x 0.63 inches | | Item Weight | 2.88 ounces | | Item dimensions L x W x H | 2.6 x 1.8 x 0.63 inches | | Manufacturer | QINIZX | | Mfr Part Number | Balancer-4S-5A-Shell | | Model Number | Balancer-4S-5A-Shell | | Number of Items | 1 | | Number of Outlets | 1 | | Number of Packs | 1 | | Output Voltage | 16.8 volts | | Plug Type | VH3.96 Terminal | | Power Source | Battery-Powered | | UPC | 780854489120 | | Unit Count | 1 Count | | Warranty Description | 90 Days Manufacturer | ## Product Details - **Brand:** QINIZX - **Color:** Yellow - **Input Voltage:** 12 volts - **Item Weight:** 2.88 ounces - **Item dimensions L x W x H:** 2.6 x 1.8 x 0.63 inches ## Images ![3S 4S 12V 5.5A Battery Active Equalizer Balancer Energy Transfer Board - Image 1](https://m.media-amazon.com/images/I/712IHdA-MAL.jpg) ## Available Options This product comes in different **Set** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good cell balancer for tool battery. *by J***E on May 10, 2026* Balanced my M18 12Ah overnight from 150mV to within 5mV. Very happy as the design brings the cells into equilibrium in lieu of designs that bring everything to the lowest cell voltage. At start I measured just over 20mA of current. Was surprised to find the next morning everything was balanced. It has a run light that was still on in the morning. Idk if it was still balancing but good enough. This was a battery I replaced 2 bad cells in. Nice for money. No frills, need a meter to confirm results. ### ⭐⭐⭐⭐⭐ I wish these had been available 20 years ago!!!! *by G***R on July 17, 2026* These things are amazing. They do a better (more accurate, and faster) job of balancing than my balancing chargers, and can be used for pre-charge, during charge and post charge balancing. I never liked using BMSes on my battery packs, preferring just to monitor conditions closely to get away with using simpler systems, fewer components to break down and the ability to over-power for short periods. I sure wish these had been available 20 years ago when I was actively building a lot of E-bikes and other battery operated systems. They would have made life much easier. Now, if the company would make similar modules that would balance 6 Volt Lead Acid battery arrays, I could vastly improve my solar power system for a reasonable cost. :-) ### ⭐⭐⭐⭐⭐ Highly recommended easy install best deal on Amazon *by I***N on September 7, 2026* I have a 660 amp power lithium, iron phosphate, battery consisting of a 4S prismatic cells My cell number four was lagging when The charging knee hit 3.450 Cells 1-2-3 would raise and cell 4 would stay at 3.450 Creating a horrible imbalance, Delta. Once I installed this active balancer, everything worked perfectly. I installed a switch on the battery to turn it on and off when needed and I haven’t needed to once I used it the first time. Highly recommended easy install. ## Frequently Bought Together - 3S 4S 12V 5.5A Capacitor Active Equalizer Whole Group Balancer Lifepo4 LFP Lipo Li-ion Lto Lithium Active Battery Energy Transfer Equalization + Protective Case - 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.co.uk/products/502041409-3s-4s-12v-5-5a-battery-active-equalizer-balancer-energy](https://www.desertcart.co.uk/products/502041409-3s-4s-12v-5-5a-battery-active-equalizer-balancer-energy) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-10-02*