---
product_id: 365544736
title: "LiFePO4 BMS 4S 12V 100A Lithium Iron Phosphate Battery Management System PCB Protection Board with Balance Leads Wires for LiFePO4 3.2V Cells Battery Pack"
brand: "vnsznr"
price: "$132"
currency: NZD
in_stock: true
reviews_count: 13
category: "Vnsznr"
url: https://www.desertcart.nz/products/365544736-lifepo4-bms-4s-12v-100a-lithium-iron-phosphate-battery-management
store_origin: NZ
region: New Zealand
---

# 100A max current 4S 12V LiFePO4 cell balance -20°C to 70°C operating temp LiFePO4 BMS 4S 12V 100A Lithium Iron Phosphate Battery Management System PCB Protection Board with Balance Leads Wires for LiFePO4 3.2V Cells Battery Pack

**Brand:** vnsznr
**Price:** $132
**Availability:** ✅ In Stock

## Summary

> 🔋 Master your power with precision and protection!

## Quick Answers

- **What is this?** LiFePO4 BMS 4S 12V 100A Lithium Iron Phosphate Battery Management System PCB Protection Board with Balance Leads Wires for LiFePO4 3.2V Cells Battery Pack by vnsznr
- **How much does it cost?** $132 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/365544736-lifepo4-bms-4s-12v-100a-lithium-iron-phosphate-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

- • **Powerhouse Protection:** Robust 100A current handling keeps your battery pack safe under heavy loads.
- • **Ultra-Low Power Drain:** Consumes less than 50µA, maximizing your battery’s standby life without compromise.
- • **All-Weather Durability:** Waterproof, dustproof, and shockproof with high-grade anti-corrosion coating—built to endure.
- • **Precision Voltage Control:** Overcharge and over-discharge thresholds finely tuned at 3.75V and 2.1V per cell for ultimate battery longevity.
- • **Comprehensive Safety Suite:** Multi-layered protection including short circuit recovery, temperature, and disconnect safeguards for peace of mind.

## Overview

The VNSZNR LiFePO4 BMS 4S 12V 100A is a high-quality battery management system designed for lithium iron phosphate cells. It features advanced MOS and IC components for long cycle life, ultra-low power consumption under 50µA, and precise voltage protections at 3.75V (overcharge) and 2.1V (over-discharge). Engineered for durability, it offers waterproof, dustproof, and shockproof protection with a robust anti-corrosion coating. The BMS supports multiple safety functions including over-current, temperature, short circuit protection, and cell balancing, making it an essential upgrade for reliable and efficient battery pack management.

## Description

Buy VNSZNR LiFePO4 BMS 4S 12V 100A Lithium Iron Phosphate Battery Management System PCB Protection Board with Balance Leads Wires for LiFePO4 3.2V Cells Battery Pack: Power Converters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: works! - Old BMS board stopped working, easy to replace with this one. Works perfect
Review: BMS 12 Volt - I bought 2 12 Volt 100 AH Lifepo4 Batteries at a Great price after about 2 months 1 quit working after contacting the company they sent me a new Battery I was told to do whatever I wanted with the other battery I cut the case open and tested everything ordered this BMS changed it out and the Battery started working immediately I was able to use the Balance lead wiring just plugged it in and replaced the main power leads working Great. Heavy made and easy to use it's a quality BMS

## Features

- ★【VNSZNR LiFePO4 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.
- ★【LiFePO4 BMS】Single overcharge protection voltage is about 3.75V. Single over-release protection voltage is about 2.1V. Working temp: - 20 ℃ ~ 70 ℃ / - 4 ℉ ~ 158 ℉.
- ★【Multiple protection】Over-charging protection. Over-discharging protection. Over-current protection. Temperature protection. Disconnect protection. Short Circuit Protection. Short Circuit protect recover. Balance Function.
- ★【Heavy Duty】VNSZNR Lifepo4 BMS use high anti-corrosion, high water resistance, high impedance ESD conformal Coating.It is waterproof, dustproof and shockproof.
- ★【What You Get】1pcs*VNSZNR 4S 100A BMS; 1pcs*balance cable; 1pcs*English user manual, Package also come with B- and P- cable, 36-months warranty and friendly customer service. Quality Guarantee--- ISO/ FCC/ RoHS/ PSE/ CE APPROVED.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0987Z8JLZ |
| Best Sellers Rank | #329,878 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,400 in Power Converters |
| Customer Reviews | 4.0 4.0 out of 5 stars (225) |
| Date First Available | June 28, 2021 |
| Item Weight | 1.17 pounds |
| Manufacturer | VNSZNR |
| Product Dimensions | 6.5 x 0.9 x 2.6 inches |

## Product Details

- **AC Adapter Current:** 100 Amps
- **Brand:** VNSZNR
- **Manufacturer:** VNSZNR
- **Material:** Plastic
- **Number Of Circuits:** 4

## Images

![LiFePO4 BMS 4S 12V 100A Lithium Iron Phosphate Battery Management System PCB Protection Board with Balance Leads Wires for LiFePO4 3.2V Cells Battery Pack - Image 1](https://m.media-amazon.com/images/I/71xEoYPoDhL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: The lifepo4 4s 100amp bms has a display port. what is the display that works with this bms?**
A: The lifepo4 4s 100amp bms doesn't have a display port.

**Q: Will this work for the LifePo4 280Ah cells?**
A: Yes and no.  Yes, it will work but only to 100A.  If you draw less than 100A at any one time from your 280Ah cells, it will work.  However, if you have an instant power draw that is larger than 100Amp, the BMS will limit that to 100A, leaving a lot of reserve amps in your cells to be used in time.  In this case, you will be starved of Amperage and it will not work to the full capacity of the cells.  On the other hand, you should never have such high Amp draw spikes (if you wish to keep the batteries healthy).  At the same time, charging and balancing the cells will take almost 3 times longer than if using a 280A BMS.  I am not 100% sure, but if I remember correctly, this BMS limits charging values to 40Amps.

**Q: How do I get support?I purchased 2 last year. I just installed and both read eeprom error**
A: I installed one several months back with no problems. Make sure to wire it correctly. I recall something about the B+ and -. Contact the manufacturer.

**Q: i want a daly bms that will hook to 16 3.2v 200ah batteries wired series parallel for a 400ah 24v system...?**
A: You can wire cells parallel 2p then 8s for 24v but you would be better 8s two bms 100a parallel the two using buss bar

## Customer Reviews

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

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

### ⭐⭐⭐⭐⭐ BMS 12 Volt
*by C***T on October 7, 2024*

I bought 2 12 Volt 100 AH Lifepo4 Batteries at a Great price after about 2 months 1 quit working after contacting the company they sent me a new Battery I was told to do whatever I wanted with the other battery I cut the case open and tested everything ordered this BMS changed it out and the Battery started working immediately I was able to use the Balance lead wiring just plugged it in and replaced the main power leads working Great. Heavy made and easy to use it's a quality BMS

### ⭐⭐⭐⭐ 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

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-22*