--- product_id: 47156062 title: "12V 100A 4Series BMS Protection Board with Balancing with Overcharge/Overdischarge/Overcurrent/Short Circuit Protection for LiFePO4 Battery Pack" brand: "walfront" price: "AR$50906" currency: ARS in_stock: true reviews_count: 13 category: "Walfront" url: https://www.desertcart.com.ar/products/47156062-12v-100a-4series-bms-protection-board-with-balancing-with-overcharge store_origin: AR region: Argentina --- # 100A max current handling 12V, 4-series LiFePO4 compatibility Multi-layer protection suite 12V 100A 4Series BMS Protection Board with Balancing with Overcharge/Overdischarge/Overcurrent/Short Circuit Protection for LiFePO4 Battery Pack **Brand:** walfront **Price:** AR$50906 **Availability:** ✅ In Stock ## Summary > 🛡️ Power up smart, stay protected smarter! ## Quick Answers - **What is this?** 12V 100A 4Series BMS Protection Board with Balancing with Overcharge/Overdischarge/Overcurrent/Short Circuit Protection for LiFePO4 Battery Pack by walfront - **How much does it cost?** AR$50906 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/47156062-12v-100a-4series-bms-protection-board-with-balancing-with-overcharge) ## Best For - walfront enthusiasts ## Why This Product - Trusted walfront brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Powerhouse Protection:** Safeguards your LiFePO4 battery pack from overcharge, overdischarge, overcurrent, and short circuits—because your energy deserves elite defense. - • **Plug & Play Convenience:** Comes with a 5P-250mm wire for seamless installation—get your system up and running without the hassle. - • **Precision Cell Balancing:** Equilibrium function ensures each cell stays perfectly balanced, extending battery life and maximizing performance. - • **Compact & Waterproof Design:** Durable build that fits discreetly into your setup and withstands environmental challenges—engineered for the modern professional. - • **Reliable Continuous Operation:** Supports charging and discharging simultaneously, proven to handle steady 40A loads with ease for your daily power needs. ## Overview This 12V 100A 4-series BMS board is a must-have for LiFePO4 battery packs, delivering comprehensive multi-protection and cell balancing to enhance battery longevity and safety. Designed for easy installation and reliable continuous use, it’s the trusted core component that keeps your energy system efficient and secure. ## Description Buy 12V 100A 4Series BMS Protection Board with Balancing with Overcharge/Overdischarge/Overcurrent/Short Circuit Protection for LiFePO4 Battery Pack: Power Converters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: 4S 12P LifePo4 solar set up. - it works though i have not used the full 100 amp current but they keep working at at least 40 amp. The bms actually is still usable while charging as well. I have bought 2 of these and only one failed at the charging port side for some odd reason it would not charge anymore got it exchanged and everything has been fine sense and its been well over 30 days of charge cycles with my solar set up. Now that some one is getting a bit greedy with the price ill have to look for another seller that is cheaper with the same product. Review: 11.8 volts - Bought this BMS because ebikeschool from YouTube recommended it. I tested on a 12 V. Trolling battery. But it did not put out 12 V only getting 11.8i bought a second B. M. S to double check voltage. And got the same thing. 11.8. Don't know why they are selling this as 12 V. When you do not output to a Volt, very disappointed in wasting my money. Might be something I don't understand..... ## Features - Convenient to Operate: This Lithium BMS is designed for 4 series 12V LiFePO4 batteries, comes with 5P-250mm wire for convenient use - Essential Part for Circuit Board: Protection circuit board is the heart of battery pack, must to have to avoid battery pack from explosion, fire and damage - Multiple Protction Functions Allows Glossy Better Expeience: This Waterproof BMS Multiple protective functions including overcharge protection, overdischarge protection, overcurrent protection and short circuit protection - Balance Function: This lifepo4 bms lithium Balance Board is equipped with equilibrium function to keep each cell in balance and good service life ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07511RJ9S | | Battery Cell Composition | Lithium Ion | | Battery Type | Lithium Ion | | Best Sellers Rank | #558,324 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2,569 in Power Converters | | Brand | Walfront | | Brand Name | Walfront | | Compatible with Vehicle Type | For LiFePO4 Battery Pack | | Customer Reviews | 3.7 out of 5 stars 154 Reviews | | Item Weight | 0.05 kg | | Manufacturer | Walfront | | Manufacturer Part Number | Walfrontvth9zscx12 | | Model Number | 4330198367 | | UPC | 736691475918 | | Vehicle Service Type | For LiFePO4 Battery Pack | | Voltage | 12 volts, 3.2 volts | ## Product Details - **Battery Cell Composition:** Lithium Ion - **Brand:** Walfront - **Item Weight:** 0.05 Kilograms - **Manufacturer:** Walfront - **UPC:** 736691475918 - **Vehicle Service Type:** For LiFePO4 Battery Pack - **Voltage:** 12 Volts, 3.2 Volts ## Images ![12V 100A 4Series BMS Protection Board with Balancing with Overcharge/Overdischarge/Overcurrent/Short Circuit Protection for LiFePO4 Battery Pack - Image 1](https://m.media-amazon.com/images/I/61V6RMIiWwL.jpg) ## Questions & Answers **Q: Can this handle charging through the negative output instead of the charging negative pad?** A: You can't really do this, because you lose the charging protection. Essentially you will be able to charge at whatever the full output is... since you're using the same mosfets. I've tested this personally on this unit, and similarly-priced models from other vendors. It's a shame, because I'm trying to use this with an alternator and I am starting to think BMS is not possible. I will have to get a charge management controller. **Q: It specifies charge voltage of 15v. can i use an 18v dc? will it regulate it for proper charging voltage and current? thanks.** A: Hello~ You cannot use an 18 v dc, it's higher than 15 v, and may cause damage to the protection. It means that the max charging voltage is 15 v. Hope this could help you, and thank you for your support! **Q: how to wire up the separate port BMS to solar charge controller? Is there diagram?** A: solar positive and battery positive go together on the battery and solar ground goes to battery charge ground on the bms **Q: Hello, each of my four 12v 12ah lifepo4 batteries already have individual internal bms protection. would adding this unit make any sense? thx** A: It depends on you, and this protection circuit board helps protecting battery pack from overcharging, over-discharging over-current and short circuit. and it is designed with equilibrium function to keep each cell in balance and good service life. ## Customer Reviews ### ⭐⭐⭐⭐⭐ 4S 12P LifePo4 solar set up. *by S***R on May 28, 2018* it works though i have not used the full 100 amp current but they keep working at at least 40 amp. The bms actually is still usable while charging as well. I have bought 2 of these and only one failed at the charging port side for some odd reason it would not charge anymore got it exchanged and everything has been fine sense and its been well over 30 days of charge cycles with my solar set up. Now that some one is getting a bit greedy with the price ill have to look for another seller that is cheaper with the same product. ### ⭐⭐⭐ 11.8 volts *by E***S on April 7, 2024* Bought this BMS because ebikeschool from YouTube recommended it. I tested on a 12 V. Trolling battery. But it did not put out 12 V only getting 11.8i bought a second B. M. S to double check voltage. And got the same thing. 11.8. Don't know why they are selling this as 12 V. When you do not output to a Volt, very disappointed in wasting my money. Might be something I don't understand..... ### ⭐⭐⭐⭐ For The Money *by M***E on December 28, 2024* I had good success using this small BMS. I just stuck to a 13.5ah battery pack comprised of 32700 cells, with 12.8 nominal voltage. I used a heat sink. I have ran a 18 watt shop light for 8 hours before the BMS shut off the pack. Worked as I would hope. Turned around and charged the pack with a Lithium Iron Phosphate charger, the charger is one rated for 40 Amps. An intelligent charger, applying what is needed and shutting off when fully charged. I use it weekly. I have two of these BMS and recommend them for light load application. You can run a LCD 30 inch TV with a small inverter, I ran a PS2 on it, lights. This is not meant for running electric heaters. Like household 30 Amp heaters. I use it for operating 12 volt heated jackets and gloves though. I recommend this product. ## Frequently Bought Together - 12V 100A 4Series BMS Protection Board with Balancing with Overcharge/Overdischarge/Overcurrent/Short Circuit Protection for LiFePO4 Battery Pack - DEWIN Pure Nickel Strip 99.6% Nickel, 1M 0.15 mm Soldering Tabs for High Capacity 18650 Lithium Battery Pack, Li-Po, NiMh and NiCd Battery Pack and Spot Welding --- ## 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.com.ar/products/47156062-12v-100a-4series-bms-protection-board-with-balancing-with-overcharge](https://www.desertcart.com.ar/products/47156062-12v-100a-4series-bms-protection-board-with-balancing-with-overcharge) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-09-12*