--- product_id: 472961877 title: "DALY Smart Active Balancer 4S 1A with Bluetooth for LiFePO4 Li-ion | Battery Equalizer. Cell Balancing. Bluetooth App Monitoring. Bidirectional Energy Transfer. DC-DC Energy Transfer Technology." brand: "daly" price: "â‚Ŧ 54.68" currency: EUR in_stock: true category: "Daly" url: https://www.desertcart.de/products/472961877-daly-smart-active-balancer-4s-1a-with-bluetooth-for-lifepo4 store_origin: DE region: Germany --- # 1A balanced current output Bluetooth app real-time monitoring Supports Li-ion/LiFePO4 batteries DALY Smart Active Balancer 4S 1A with Bluetooth for LiFePO4 Li-ion | Battery Equalizer. Cell Balancing. Bluetooth App Monitoring. Bidirectional Energy Transfer. DC-DC Energy Transfer Technology. **Brand:** daly **Price:** â‚Ŧ 54.68 **Availability:** ✅ In Stock ## Summary > 🔋 Stay charged, stay ahead — balance your battery like a pro! ## Quick Answers - **What is this?** DALY Smart Active Balancer 4S 1A with Bluetooth for LiFePO4 Li-ion | Battery Equalizer. Cell Balancing. Bluetooth App Monitoring. Bidirectional Energy Transfer. DC-DC Energy Transfer Technology. by daly - **How much does it cost?** â‚Ŧ 54.68 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/472961877-daly-smart-active-balancer-4s-1a-with-bluetooth-for-lifepo4) ## Best For - daly enthusiasts ## Why This Product - Trusted daly brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - â€ĸ **Universal Compatibility:** Works flawlessly with any BMS brand and multiple lithium battery types - â€ĸ **24/7 Intelligent Balancing:** Continuous energy transfer ensures consistent battery life anytime, anywhere - â€ĸ **Cool & Efficient Operation:** High-efficiency design minimizes heat and energy loss for safer use - â€ĸ **Precision Voltage Equalization:** Achieve ultra-accurate 0.01V balancing for peak battery health - â€ĸ **Seamless Bluetooth Integration:** Monitor and control your battery status effortlessly via smart app ## Overview The Daly Battery Equalizer 4S 1A is a smart active balancer designed for Li-ion and LiFePO4 battery packs, delivering precise voltage equalization (0.01V accuracy) with up to 1A balancing current. Featuring 24/7 intelligent balancing independent of charge state, Bluetooth app connectivity for real-time monitoring, and compatibility with any BMS brand, it extends battery life while operating efficiently with minimal heat generation. ## Description Buy Daly Battery Equalizer 4S 1A with Bluetooth App and Wire Leads and Compatible Active Balancer for Lithium Battery Rated 3.7V 3.2V 2.2V: Power Converters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - [Active Equalizer]Can be used alone or compatible with any brand of BMS.Suitable for Li-ion/LifePO4 battery packs - [Working Principle] Balanced by energy transfer, with high efficiency, less energy loss and low heat generation. Ensure battery consistency and extend the battery life. Balanced current: 0.1-1A, Voltage equalisation accuracy: 0.01Vīŧ› - [24-hour equalization] Not limited by battery charging, discharging or static, sleep mode, etc. Intelligent detection of battery voltage, automatically turn on/off balancing. - [Smart active balancer]Support UART/RS485 communication, Bluetooth APP can view battery balancing information at any time. Indicator light on/flashing: balanced state; indicator light off: non-balanced state/fault. - [Satisfactory Service]: We Provide 24-hour online service,If you encounter any problems, Please feel free to contact me, we will give you a perfect solution. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B5LJY981 | | Best Sellers Rank | #179,599 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #774 in Power Converters | | Brand | DALY | | Color | Smart Active Balancer | | Customer Reviews | 3.6 3.6 out of 5 stars (31) | | Input Voltage | 3.7 volts | | Item Dimensions | 2.36 x 1.38 x 0.7 inches | | Manufacturer | Dongguan Daly Electronics Co., Ltd | | Mfr Part Number | AB-1 | | Model Number | 4S 1A B0B5LJY981 | | Output Voltage | 3.7 volts | | Plug Type | Type A | | UPC | 768655913440 | | Unit Count | 1 Count | ## Product Details - **Brand:** DALY - **Color:** Smart Active Balancer - **Input Voltage:** 3.7 volts - **Item dimensions L x W x H:** 2.36 x 1.38 x 0.7 inches - **Output Voltage:** 3.7 volts ## Images ![DALY Smart Active Balancer 4S 1A with Bluetooth for LiFePO4 Li-ion | Battery Equalizer. Cell Balancing. Bluetooth App Monitoring. Bidirectional Energy Transfer. DC-DC Energy Transfer Technology. - Image 1](https://m.media-amazon.com/images/I/61I9abwkQUL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Why do you need this and a bms? the bms is supposed to balance as well?** A: Most BMS will only balance while the batteries are charging. The active balancer works all the time. It takes current from a battery with high voltage and sends it to a battery with lower voltage. **Q: can the 20s also be used for a 14s and 16s battery and Lifepo4 and LI** A: I cannot say for sure-- but I wouldn't think so. The unit comes with the number of leads to match the cells and I don't believe it would function correctly without the same number of battery cells connected. **Q: Will this balancer work without a BMS?** A: Yes it will. You can actively monitor the state of your battery via blue tooth app and it works quite efficiently. Good for older out of balance battery packs. **Q: Why does daly balancer show diferent voltage on the app from my original bms? Some times in 30 mV diference** A: Probably the accuracy of the voltage reading. These are not "industrial grade" instruments. they are consumer level. A 30mV difference is not too big and nothing to be concerned over. ## Frequently Bought Together - Daly Battery Equalizer 4S 1A with Bluetooth App and Wire Leads and Compatible Active Balancer for Lithium Battery Rated 3.7V 3.2V 2.2V - DALY Smart BMS 4S 12V 100A with WiFi Module and CAN 485 Communication Protection Board for Remote Monitoring of LifePO4 Lithium Battery Pack --- ## 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.de/products/472961877-daly-smart-active-balancer-4s-1a-with-bluetooth-for-lifepo4](https://www.desertcart.de/products/472961877-daly-smart-active-balancer-4s-1a-with-bluetooth-for-lifepo4) --- *Product available on Desertcart Germany* *Store origin: DE* *Last updated: 2026-07-31*