---
product_id: 405495548
title: "3pcs 4S 20A 14.8V Li-ion Lithium 18650 Battery BMS PCM Protection PCB Board Module 16.8V Overcharge Over Discharge Short Circuit Protection"
brand: "aceirmc"
price: "A$33"
currency: AUD
in_stock: true
url: https://www.desertcart.com.au/products/405495548-3pcs-4s-20a-14-8v-li-ion-lithium-18650-battery
store_origin: AU
region: Australia
---

# 20A current capacity 14.8V battery support 3-layer protection 3pcs 4S 20A 14.8V Li-ion Lithium 18650 Battery BMS PCM Protection PCB Board Module 16.8V Overcharge Over Discharge Short Circuit Protection

**Brand:** aceirmc
**Price:** A$33
**Availability:** ✅ In Stock

## Summary

> 🔋 Power Up Your Projects with Confidence!

## Quick Answers

- **What is this?** 3pcs 4S 20A 14.8V Li-ion Lithium 18650 Battery BMS PCM Protection PCB Board Module 16.8V Overcharge Over Discharge Short Circuit Protection by aceirmc
- **How much does it cost?** A$33 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/405495548-3pcs-4s-20a-14-8v-li-ion-lithium-18650-battery)

## Best For

- aceirmc enthusiasts

## Why This Product

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

## Key Features

- • **Compact Design:** Measuring just 35*35*3.0mm, this module fits seamlessly into your projects.
- • **Low Standby Consumption:** Designed for efficiency, it minimizes energy waste during idle times.
- • **Versatile Compatibility:** Ideal for various applications, from DIY projects to professional setups.
- • **Precision Voltage Monitoring:** Experience high-accuracy voltage detection for optimal battery performance.
- • **Robust Overcurrent Protection:** Built-in three-stage over-current detection ensures safety against overloads.

## Overview

The 3pcs 4S 20A 14.8V Li-ion Lithium 18650 Battery BMS PCM Protection PCB Board Module offers advanced protection features including overcharge, over-discharge, and short circuit safeguards. With a compact design and high-accuracy voltage detection, this module is perfect for both hobbyists and professionals looking to enhance battery safety and performance.

## Description

3pcs 4S 20A 14.8V Li-ion Lithium 18650 Battery BMS PCM Protection PCB Board Module 16.8V Overcharge Over Discharge Short Circuit Protection

## Features

- High-accuracy voltage detection circuit; terminal of the charger using high voltage device; low standby current consumption
- Built-in three-stage over-current detection circuit (over-current 1, over-current 2, or load short circuit);MOS transistor can control the battery charge and discharge;
- In the use of the battery will be hot, the battery rate is not applicable, this situation can not be used for a long time, the battery will be damaged quickly.
- The protection board measures 35*35*3.0mm, and the components are S-8254AA protection chip and D403*4 pieces.
- Over Charge Voltage:4.25-4.35v±0.05v, Over Discharge Voltage: 2.3-3.0v±0.05v

## Product Details

- **Brand:** ACEIRMC
- **Color:** 6pcs
- **Input Voltage:** 14.8 Volts
- **Output Voltage:** 16.8 Volts
- **Plug Format:** Type B

## Images

![3pcs 4S 20A 14.8V Li-ion Lithium 18650 Battery BMS PCM Protection PCB Board Module 16.8V Overcharge Over Discharge Short Circuit Protection - Image 1](https://m.media-amazon.com/images/I/81MmYsuWqpL.jpg)
![3pcs 4S 20A 14.8V Li-ion Lithium 18650 Battery BMS PCM Protection PCB Board Module 16.8V Overcharge Over Discharge Short Circuit Protection - Image 2](https://m.media-amazon.com/images/I/61ASuhuxgBL.jpg)
![3pcs 4S 20A 14.8V Li-ion Lithium 18650 Battery BMS PCM Protection PCB Board Module 16.8V Overcharge Over Discharge Short Circuit Protection - Image 3](https://m.media-amazon.com/images/I/61Yw-hwV-WL.jpg)
![3pcs 4S 20A 14.8V Li-ion Lithium 18650 Battery BMS PCM Protection PCB Board Module 16.8V Overcharge Over Discharge Short Circuit Protection - Image 4](https://m.media-amazon.com/images/I/61fj10kV+rL.jpg)
![3pcs 4S 20A 14.8V Li-ion Lithium 18650 Battery BMS PCM Protection PCB Board Module 16.8V Overcharge Over Discharge Short Circuit Protection - Image 5](https://m.media-amazon.com/images/I/61JREumgf-L.jpg)

## Available Options

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

## Frequently Bought Together

- ACEIRMC 3pcs 4S 20A 14.8V Li-ion Lithium 18650 Battery BMS PCM Protection PCB Board Module 16.8V Overcharge Over Discharge Short Circuit Protection
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**Shop now:** [https://www.desertcart.com.au/products/405495548-3pcs-4s-20a-14-8v-li-ion-lithium-18650-battery](https://www.desertcart.com.au/products/405495548-3pcs-4s-20a-14-8v-li-ion-lithium-18650-battery)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-05*