---
product_id: 528283131
title: "BMS Board LiFePO4 4S 12V 120A Smart PCB Battery Management System with Balance Leads Wires and Wireless Module for Lithium Iron Phosphate"
brand: "vnsznr"
price: "885 Lei"
currency: RON
in_stock: true
reviews_count: 8
category: "Vnsznr"
url: https://www.desertcart.ro/products/528283131-bms-board-lifepo4-4s-12v-120a-smart-pcb-battery-management
store_origin: RO
region: Romania
---

# 120A max current Waterproof & dustproof PCB Real-time app monitoring BMS Board LiFePO4 4S 12V 120A Smart PCB Battery Management System with Balance Leads Wires and Wireless Module for Lithium Iron Phosphate

**Brand:** vnsznr
**Price:** 885 Lei
**Availability:** ✅ In Stock

## Summary

> 🔋 Stay charged, stay connected — the smart BMS your LiFePO4 battery deserves!

## Quick Answers

- **What is this?** BMS Board LiFePO4 4S 12V 120A Smart PCB Battery Management System with Balance Leads Wires and Wireless Module for Lithium Iron Phosphate by vnsznr
- **How much does it cost?** 885 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/528283131-bms-board-lifepo4-4s-12v-120a-smart-pcb-battery-management)

## Best For

- vnsznr enthusiasts

## Why This Product

- Trusted vnsznr brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Connectivity:** Seamlessly monitor and configure your battery via Android & iOS app in real time.
- • **Precision Balancing:** Maintains cell voltage within 0.1V to extend battery life and optimize performance.
- • **Durability Engineered:** Waterproof, dustproof, and shockproof PCB with high corrosion resistance for long-lasting reliability.
- • **Effortless Activation:** Dual activation methods—button press or charge activation—ensure quick and hassle-free setup.
- • **Powerhouse Performance:** Supports up to 120A continuous current for robust battery management.

## Overview

The VNSZNR LiFePO4 4S 12V 120A Smart BMS is a high-quality battery management system designed for lithium iron phosphate batteries. Featuring a robust 120A current capacity, waterproof and corrosion-resistant PCB, and wireless module connectivity for real-time monitoring via mobile app, it ensures precise cell balancing and extended battery life. Backed by a 36-month warranty and certified by ISO, FCC, ROHS, PSE, and CE, this BMS combines durability, smart tech, and user-friendly activation methods for professional-grade battery protection.

## Description

desertcart.com: VNSZNR BMS Board LiFePO4 4S 12V 120A Smart PCB Battery Management System with Balance Leads Wires and Wireless Module for Lithium Iron Phosphate : Electronics

Review: works! - Old BMS board stopped working, easy to replace with this one. Works perfect
Review: Keeps cells balanced. - Does very well balancing cells. Not sure about charge limiting or discharge limiting, but I purchased this to balance my Li-Fe P04 cells and it keeps them within 0.1 volts. Built very rugged and seems of good quality.

## Features

- ★【Smart LiFePO4 BMS 12V 120A】For our smart bms,when first use,need to activate first,then B- P- can be conductive,voltage from P- can be same from B-, then BMS can work well.
- ★【Module】Available connect with Android and IOS App and can review the battery status in real time by mobile phone. Through module can set the battery capacity, protection temperature, protection voltage and etc.
- ★【BMS Activation Method】Method ①: Press the button on the module to activate the bms directly.Method ②: Charge activation, B-line must be connected to the total negative pole of the battery pack when charging. If Method ① fails to activate the BMS, try Method ② to activate the BMS.
- ★【VNSZNR BMS】The BMS was be manufactured by high quality Mos and IC. Keep your battery long cycle service life time. Extreme low power consumption. The consumption of the whole device is less than 50uA.PCB use high anti-corrosion, high water resistance, high impedance ESD conformal Coating.It is waterproof, dustproof and shockproof.
- ★【VNSZNR BMS】What You Get: 1pcs*VNSZNR BMS Lifepo4 4S 12V 120A, 1pcs*module, 1pcs*balance cable and 1pcs*English manual,Package also come with B-P- cable,NTC cable(temperature sensor). 36-months warranty and friendly customer service. Quality Guarantee--- ISO/ FCC/ ROHS/ PSE/ CE APPROVED.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| AC Adapter Current | 120 Amps |
| ASIN | B09W2HV8GZ |
| Best Sellers Rank | #601,136 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2,755 in Power Converters |
| Brand | VNSZNR |
| Brand Name | VNSZNR |
| Customer Reviews | 4.0 out of 5 stars 225 Reviews |
| Item Height | 3.7 inches |
| Manufacturer | VNSZNR |
| Material | Copper |
| Material Type | Copper |
| Maximum Current | 120 Amps |
| Number Of Circuits | 1 |
| Warranty Description | Warranty for 36 months from date of purchase（The warranty service is only valid under normal use.） |

## Product Details

- **Brand:** VNSZNR
- **AC Adapter Current:** 120 Amps
- **Material:** Copper
- **Number Of Circuits:** 1
- **Manufacturer:** VNSZNR

## Images

![BMS Board LiFePO4 4S 12V 120A Smart PCB Battery Management System with Balance Leads Wires and Wireless Module for Lithium Iron Phosphate - Image 1](https://m.media-amazon.com/images/I/716sOUUfb3L.jpg)
![BMS Board LiFePO4 4S 12V 120A Smart PCB Battery Management System with Balance Leads Wires and Wireless Module for Lithium Iron Phosphate - Image 2](https://m.media-amazon.com/images/I/718Lstql3wL.jpg)
![BMS Board LiFePO4 4S 12V 120A Smart PCB Battery Management System with Balance Leads Wires and Wireless Module for Lithium Iron Phosphate - Image 3](https://m.media-amazon.com/images/I/71BSXMn0VPL.jpg)
![BMS Board LiFePO4 4S 12V 120A Smart PCB Battery Management System with Balance Leads Wires and Wireless Module for Lithium Iron Phosphate - Image 4](https://m.media-amazon.com/images/I/71d5peVGYcL.jpg)
![BMS Board LiFePO4 4S 12V 120A Smart PCB Battery Management System with Balance Leads Wires and Wireless Module for Lithium Iron Phosphate - Image 5](https://m.media-amazon.com/images/I/71m6wfAtjDL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ works!
*by K***T on July 31, 2022*

Old BMS board stopped working, easy to replace with this one. Works perfect

### ⭐⭐⭐⭐⭐ Keeps cells balanced.
*by T***D on April 28, 2025*

Does very well balancing cells. Not sure about charge limiting or discharge limiting, but I purchased this to balance my Li-Fe P04 cells and it keeps them within 0.1 volts. Built very rugged and seems of good quality.

### ⭐⭐⭐⭐ Works,
*by R***N on October 13, 2022*

Like the fact it worked,wiring instructions and app could be better!will update review in a few months seeing that it's only been operating for 6-8 hrs.

## Frequently Bought Together

- VNSZNR BMS Board LiFePO4 4S 12V 120A Smart PCB Battery Management System with Balance Leads Wires and Wireless Module for Lithium Iron Phosphate
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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-03-03*