--- product_id: 232943508 title: "Heltec 4S 5S 6S 5A Capacitor Active Equalizer Balancer Lifepo4 Lithium Lipo/Titanate LTO for Battery Car Audio Group Balancer" brand: "heltec automation" price: "€ 54.12" currency: EUR in_stock: true reviews_count: 5 category: "Heltec Automation" url: https://www.desertcart.de/products/232943508-heltec-4s-5s-6s-5a-capacitor-active-equalizer-balancer-lifepo4 store_origin: DE region: Germany --- # 5.5A max balancing current Compact 7x5x2 inch design Balances 4-6 lithium cells Heltec 4S 5S 6S 5A Capacitor Active Equalizer Balancer Lifepo4 Lithium Lipo/Titanate LTO for Battery Car Audio Group Balancer **Brand:** heltec automation **Price:** € 54.12 **Availability:** βœ… In Stock ## Summary > πŸ”‹ Keep your car audio pack perfectly balanced β€” because every cell deserves the spotlight! ## Quick Answers - **What is this?** Heltec 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?** € 54.12 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/232943508-heltec-4s-5s-6s-5a-capacitor-active-equalizer-balancer-lifepo4) ## 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 - β€’ **Future-Ready Tech:** Advanced capacitance balancing keeps your car audio system ahead of evolving lithium battery demands. - β€’ **Sleek & Energy-Smart:** Compact form factor with ultra-low quiescent current (<0.1mA in sleep mode) maximizes efficiency. - β€’ **Tailored Battery Mastery:** Customizable parameters put you in full control of your battery’s balancing process. - β€’ **Power Stability On-Demand:** Active balancing prevents audio dropouts by maintaining uninterrupted power flow. - β€’ **Effortless Voltage Harmony:** Automatically equalizes voltage within 5mV for peak battery health and audio clarity. ## Overview The Heltec 4S-6S Capacitor Active Equalizer Balancer is a precision-engineered battery management system designed for lithium-based car audio batteries. Supporting 4 to 6 series cells with up to 5.5A balancing current, it actively equalizes voltage differences within 5mV to extend battery life and ensure stable power delivery. Its compact design and ultra-low power consumption make it ideal for professional-grade car audio setups, while customizable settings and advanced capacitance technology future-proof your investment. ## 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: This thing works! - Bought this in hopes of balancing a 6 cell in series ultracapacitor pack I made for my car audio setup. Each cell is rated for 3V max and 3000 farads. I believe that if I would charge the pack to max of 18V I would have 500 farads to use but since I am only charging it to 14.5 while my engine is running, I think it is less. Maybe I am wrong? Anyway, without the balancer, the cell connected directly to the positive cable would always be higher voltage than the rest as that is the one first in series that is connected to the alternator and load. After connecting the balancer and bridging the LTO contact points the entire pack is exactly balanced evenly on each cell. Before balancing I had the pack sitting home unused for 5 months as I didn't use the amplifier that I made it for. So due to not using the pack the voltage dropped a little to 12.57V and the cell voltages were like this: 2.101V, 2.086V, 2.098V, 2.105V, 2.086V, 2.095V. I plugged in the balance plug to the balancer and began cleaning up my work area and in about 3 minutes time the pack equalized to the following voltages: 2.094V, 2.092V, 2.094V, 2.094V, 2.092V, 2.094V. and total voltage dropped very slightly to 12.56V. I then connected the entire pack to a power supply for 5 minutes to top off the pack and charged it up to 14.5V and then disconnected it overnight. In the morning the pack voltage was stabilized to14.2V and each cell was exactly at 2.366V. This thing is amazing! I will no doubt get another balancer like this if I build more packs. Review: Great product - Great quality works just fine ## Features - Effortless Balance: Automatically maintains consistent voltage across each cell in your lithium battery pack, ensuring peak performance and longevity for your car audio system. - Uninterrupted Power: Say goodbye to audio disruptions caused by voltage imbalances – the Heltec BMS actively monitors and balances cells, providing a stable power supply for uninterrupted listening pleasure. - Customizable Control: Tailor settings to your specific needs with customizable parameters, giving you full control over the balancing process and maximizing the efficiency of your battery setup. - Compact and Efficient: Compact design ensures easy installation in your vehicle, while its efficient operation minimizes energy loss, allowing you to get the most out of your battery capacity. - Future-Proof Technology: Stay ahead of the curve with advanced capacitance balancing technology, designed to meet the demands of today's car audio enthusiasts and adapt to the evolving needs of tomorrow's technology. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08JCL4G2X | | Antenna Location | Car audio lithium batteries | | Battery Capacity | 300 Amp Hours | | Battery Cell Type | Lithium-Titanate | | Best Sellers Rank | #16 in Car Amplifier Capacitors | | Brand | Heltec Automation | | Customer Reviews | 4.7 4.7 out of 5 stars (153) | | Item Dimensions | 7 x 5 x 2 inches | | Item Weight | 0.13 Pounds | | Manufacturer | Heltec Automation | | Model Name | lifepo4 | | Model Number | 6S-BALANCER | | Reusability | TRUE | | UPC | 779283248248 | | Unit Count | 1.0 Count | | Voltage | 1.8 Volts | | Warranty Description | Manufacturer | ## Product Details - **Battery Capacity:** 300 Amp Hours - **Battery Cell Composition:** Lithium-Titanate - **Brand:** Heltec Automation - **Recommended Uses For Product:** Car audio lithium batteries - **Unit Count:** 1.0 Count ## Images ![Heltec 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/61SNGdz7BhL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ This thing works! *by P***L on March 9, 2025* Bought this in hopes of balancing a 6 cell in series ultracapacitor pack I made for my car audio setup. Each cell is rated for 3V max and 3000 farads. I believe that if I would charge the pack to max of 18V I would have 500 farads to use but since I am only charging it to 14.5 while my engine is running, I think it is less. Maybe I am wrong? Anyway, without the balancer, the cell connected directly to the positive cable would always be higher voltage than the rest as that is the one first in series that is connected to the alternator and load. After connecting the balancer and bridging the LTO contact points the entire pack is exactly balanced evenly on each cell. Before balancing I had the pack sitting home unused for 5 months as I didn't use the amplifier that I made it for. So due to not using the pack the voltage dropped a little to 12.57V and the cell voltages were like this: 2.101V, 2.086V, 2.098V, 2.105V, 2.086V, 2.095V. I plugged in the balance plug to the balancer and began cleaning up my work area and in about 3 minutes time the pack equalized to the following voltages: 2.094V, 2.092V, 2.094V, 2.094V, 2.092V, 2.094V. and total voltage dropped very slightly to 12.56V. I then connected the entire pack to a power supply for 5 minutes to top off the pack and charged it up to 14.5V and then disconnected it overnight. In the morning the pack voltage was stabilized to14.2V and each cell was exactly at 2.366V. This thing is amazing! I will no doubt get another balancer like this if I build more packs. ### ⭐⭐⭐⭐⭐ Great product *by F***Z on September 4, 2025* Great quality works just fine ### ⭐⭐⭐⭐⭐ All balanced. No more unwarranted under-voltage shutdowns. *by D***. on October 17, 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. ## Frequently Bought Together - Heltec 4S 5S 6S 5A Capacitor Active Equalizer Balancer Lifepo4 Lithium Lipo/Titanate LTO for Battery Car Audio Group Balancer - 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 - 5A 3S 4S 12V Battery Active Equalizer Whole Group Balancer LiFePO4 LFP Lipo Li-ion Lithium Active Battery Energy Transfer Equalization Capacitor Balancer PCB Module with Acrylic Protective Case --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.de/products/232943508-heltec-4s-5s-6s-5a-capacitor-active-equalizer-balancer-lifepo4](https://www.desertcart.de/products/232943508-heltec-4s-5s-6s-5a-capacitor-active-equalizer-balancer-lifepo4) --- *Product available on Desertcart Germany* *Store origin: DE* *Last updated: 2026-04-24*