--- product_id: 690127817 title: "JKBMS Smart BMS 4S-8S 200A 1A Active Balance Build-in Bluetooth with RS485 PCB Battery Protection Board for LiFePO4 Li-ion LTO Battery Pack（JK-B1A8S20P）" brand: "jkbms" price: "€ 175.62" currency: EUR in_stock: true reviews_count: 5 category: "Jkbms" url: https://www.desertcart.fr/products/690127817-jkbms-smart-bms-4s-8s-200a-1a-active-balance-build store_origin: FR region: France --- # 1A active balancing for extended battery life Built-in Bluetooth for real-time monitoring 200A max current JKBMS Smart BMS 4S-8S 200A 1A Active Balance Build-in Bluetooth with RS485 PCB Battery Protection Board for LiFePO4 Li-ion LTO Battery Pack（JK-B1A8S20P） **Brand:** jkbms **Price:** € 175.62 **Availability:** ✅ In Stock ## Summary > 🔋 Power up smartly, balance perfectly, live worry-free. ## Quick Answers - **What is this?** JKBMS Smart BMS 4S-8S 200A 1A Active Balance Build-in Bluetooth with RS485 PCB Battery Protection Board for LiFePO4 Li-ion LTO Battery Pack（JK-B1A8S20P） by jkbms - **How much does it cost?** € 175.62 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/690127817-jkbms-smart-bms-4s-8s-200a-1a-active-balance-build) ## Best For - jkbms enthusiasts ## Why This Product - Trusted jkbms brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Plug & Play Ready:** Complete kit with wires, switch, temperature sensor, and screws included—get up and running quickly with minimal hassle. - • **Active Balancing Tech:** 1A active equalization optimizes cell health and boosts battery lifespan, so you never miss a beat in your power needs. - • **Seamless Smart Control:** Bluetooth-enabled app compatibility for Android & iOS lets you monitor and tweak battery settings anytime, anywhere—because control is power. - • **Versatile Compatibility:** Supports Li-ion, LiFePO4, and LTO batteries, perfect for RVs, solar setups, UPS systems, and more—future-proof your energy solutions. - • **Ultimate Battery Guardian:** Comprehensive protection against overcharge, overdischarge, overcurrent, short circuits, and temperature extremes keeps your investment safe and sound. ## Overview The JKBMS Smart BMS 4S-8S 200A is a high-performance battery management system designed for Li-ion, LiFePO4, and LTO battery packs. Featuring built-in Bluetooth for real-time monitoring and control via mobile app, it offers robust protection against electrical and thermal risks. Its 1A active balancing extends battery life, while versatile compatibility and a comprehensive accessory kit ensure easy integration into RVs, solar panels, and UPS systems. Certified for safety and backed by 1-year support, it’s engineered for professionals who demand reliability and smart energy management. ## Description Description:Accessory Type : Battery AccessoriesBrand Name : JKBMSOrigin : Mainland ChinaModel Number : 4S-8S 200ABattery Type : Li-ion,LiFePO4,LTOEqualization Method : Active BalacnceApplications : 3.2V LiFePO4,3.7V Li-ionVoltage : BMS 12V - BMS 24VTemp Sensor : YESBluetooth : Built-inCertification : ISO/ FCC/ RoHS/ PSE/ CEOvercurrent protection : YESOver charge protection : YESOver discharge voltage : YESShort circuit protection : YESTemperature protection : YESBalance function : YESGPS function : according to Cusotmer needCAN communication : according to Cusotmer needRS485 function : according to Cusotmer needJKBMS Brand Promise：Non-human damage、1 year manufacturer，Provide after-sales technical support.Package：BMS【Bluetooth Built-in】*1Wires (70cm)*1Switch(50cm)*1NTC(40cm)*1Screw*4Operate manual*1NOTE：Strictly forbidden to reversely connect the B- and C- cables of the BMS, forbidden to confuse wiring.Wiring must start from B- to B+ and be connected in sequence.Measure the voltage of each battery string with a multimeter to ensure the correct line sequence.Connect B- of BMS to the total negative of Battery Before Pluging the sampling cable into the BMS, Otherwise, the board will be burnt.Please operate in strict accordance with the instruction manual and the guidance of customer service personnel when installing the BMS. If the BMS does not work or is damaged due to misoperation without following the instructions and customer service instructions, customer need to pay for repair or replacement. Review: Incorrect description it only is 1A Active Balancer - Incorrect description it only has a 1A Active Balancer not 2A as advertised disappointing and misleading. Not going to be a return customer. Use another supplier as JK BMS work great Review: delivery was bad - soo bad timing delivery was long and part arrive squish dont know if it will work for long but it work ## Features - Enhanced Safety: Safeguard your battery with protection against overcharging, overdischarging, overcurrent, short circuits, and temperature extremes. JKBMS Active Equalization extends battery life and enhances performance - Easy Connection: Effortlessly manage your battery with JK BMS mobile app for Android and iOS. Bluetooth connectivity allows you to monitor status, adjust settings, and control charging/discharging from your device - Wide Application: This versatile BMS works with Li-ion, LiFePO4, and LTO batteries. Ideal for RV, Solar Panel, and UPS Power Supply and so on, it offers seamless integration and top performance - After-Sales Support: If you have any questions or concerns, please contact us through your order page. We are committed to providing assistance and ensuring your satisfaction with our 1-year support - Packing List: Includes Smart BMS (JK-B1A8S20P) * 1,Wires (70cm) * 1,Switch (50cm) * 1,NTC (40cm) * 1,Screws * 4,Operate manual * 1,(RS485 converter not included).Everything you need for setup and operation ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0D14FT2M5 | | Best Sellers Rank | #218,017 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #957 in Cordless Tool Accessories | | Brand | JKBMS | | Color | JK BMS | | Colour | JK BMS | | Customer Reviews | 4.3 out of 5 stars 16 Reviews | | Input Voltage | 24 Volts | | Input voltage | 24 Volts | | Item Dimensions | 15.3 x 12.6 x 1.8 centimeters | | Item Weight | 0.77 Pounds | | Item dimensions L x W x H | 15.3 x 12.6 x 1.8 centimeters | | Item weight | 0.77 Pounds | | Manufacturer | JKBMS | | Mfr Part Number | B27028 | | Model Number | JK-B1A8S20P | | Number of Items | 1 | | Output Voltage | 24 Volts | | Output voltage | 24 Volts | | Plug Type | Micro USB | | Unit Count | 1.0 Count | ## Product Details - **Brand:** JKBMS - **Colour:** JK BMS - **Input voltage:** 24 Volts - **Item dimensions L x W x H:** 15.3 x 12.6 x 1.8 centimeters - **Item weight:** 0.77 Pounds ## Images ![JKBMS Smart BMS 4S-8S 200A 1A Active Balance Build-in Bluetooth with RS485 PCB Battery Protection Board for LiFePO4 Li-ion LTO Battery Pack（JK-B1A8S20P） - Image 1](https://m.media-amazon.com/images/I/61MG8KaTEOL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐ Incorrect description it only is 1A Active Balancer *by D***) on 21 August 2026* Incorrect description it only has a 1A Active Balancer not 2A as advertised disappointing and misleading. Not going to be a return customer. Use another supplier as JK BMS work great ### ⭐⭐⭐ delivery was bad *by P***S on 30 August 2026* soo bad timing delivery was long and part arrive squish dont know if it will work for long but it work ### ⭐⭐⭐⭐⭐ JK far superior than Daly *by O***C on 17 August 2025* This is used in my camper in a 12v system. It replaces a Daly BMS that I have never been happy with. With this BMS, I now am able to fully charge my battery, and in fact, I have probably 40% more battery power available. Second, the active balancing of this BMS is far superior. Third, the Daly BMS app always asked for permissions from my phone that I did not feel comfortable giving. This app has no such problems. In summary, Daly is prettier, but the JK functions much better. I wish I bought it a couple of years ago. ## Frequently Bought Together - JKBMS Smart BMS 4S-8S 200A 1A Active Balance Build-in Bluetooth with RS485 PCB Battery Protection Board for LiFePO4 Li-ion LTO Battery Pack（JK-B1A8S20P） - Highwings High-Speed 4K HDMI Cable 25 FT, 18Gbps 2.0 Braided HDMI Cord, 4K HDR,HDR10,HDCP 2.2,ARC,Video 4K Ultra HD,2160p,HD 1080p,3D, Compatible with Roku TV/HDTV/PS5/Blu-ray - 128 RGB LED Ring 128 X WS2812 5050 Full Color with Integrated Drivers 128 Bits forArduino Raspberry Pi ESP8266 Nodemcu DC5V --- ## 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.fr/products/690127817-jkbms-smart-bms-4s-8s-200a-1a-active-balance-build](https://www.desertcart.fr/products/690127817-jkbms-smart-bms-4s-8s-200a-1a-active-balance-build) --- *Product available on Desertcart France* *Store origin: FR* *Last updated: 2026-09-19*