---
product_id: 241205835
title: "2S 7.4V 8.4V 8A 18650 Charger PCB BMS Protection Board for Li-ion Lithium Battery Cell (8pcs)"
brand: "aceirmc"
price: "₨7407"
currency: LKR
in_stock: true
reviews_count: 8
url: https://www.desertcart.lk/products/241205835-2s-7-4v-8-4v-8a-18650-charger-pcb-bms
store_origin: LK
region: Sri Lanka
---

# Overcharge protection 8A output 4 safety features 2S 7.4V 8.4V 8A 18650 Charger PCB BMS Protection Board for Li-ion Lithium Battery Cell (8pcs)

**Brand:** aceirmc
**Price:** ₨7407
**Availability:** ✅ In Stock

## Summary

> 🔌 Power Up Your Life with Confidence!

## Quick Answers

- **What is this?** 2S 7.4V 8.4V 8A 18650 Charger PCB BMS Protection Board for Li-ion Lithium Battery Cell (8pcs) by aceirmc
- **How much does it cost?** ₨7407 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/241205835-2s-7-4v-8-4v-8a-18650-charger-pcb-bms)

## 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

- • **Smart Energy Control:** Low standby current consumption ensures your devices are always ready.
- • **Versatile Compatibility:** Perfect for various applications, from massagers to solar street lights.
- • **Precision Power Management:** Experience high-accuracy voltage detection for optimal battery performance.
- • **Durability Meets Efficiency:** Crafted for longevity with a lifespan exceeding 50,000 hours.
- • **Comprehensive Safety Protocols:** Enjoy peace of mind with over-discharge, overcurrent, and short circuit protections.

## Overview

The 2S 7.4V 8.4V 8A Charger PCB BMS Protection Board is engineered for high-accuracy voltage detection and durability, making it ideal for a wide range of lithium battery applications. With overcharge, overcurrent, and short circuit protections, this board ensures the safety and longevity of your devices, all while maintaining low standby current consumption.

## Description

2S 7.4V 8.4V 8A 18650 Charger PCB BMS Protection Board for Li-ion Lithium Battery Cell (8pcs)

## Features

- HIGH-ACCURACY, HIGHLY DURABLE: High-accuracy voltage detection circuit, fine workmanship and durable, Effective life greater than 50000 hours.
- Use for variety of capacities and various shapes 3.7V lithium batteries,Massager battery pack, LED light backup power supply, solar street light battery pack, monitor standby power supply, etc.
- Over-discharge protection, overcurrent protection, overcharge protection, short circuit protection; A combination of 4 safety features that work together to provide ultimate protection for your devices.
- MOS transistor can control the battery charge and discharge, low standby current consumption.
- ATTENTION: Strictly according to the diagram wiring: B+: Battery V+ Positive, B-: Battery V- Negative, P+: Output / Charging V+, P-: Output / Charging V-, MB: The connection point between the batteries.Otherwise it will cause damage to the chip. Do not mix the good battery and poor battery to use. The internal resistance of 3 battery capacity are closer will be better.

## Product Details

- **Brand:** ACEIRMC
- **Color:** 8PCS
- **Output Voltage:** 8.4 Volts
- **Input Voltage:** 8.4 Volts
- **Charging Time:** 50000 Hours

## Images

![2S 7.4V 8.4V 8A 18650 Charger PCB BMS Protection Board for Li-ion Lithium Battery Cell (8pcs) - Image 1](https://m.media-amazon.com/images/I/712nBYZ1qtL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ tiny and very very good
*by P***R on December 23, 2024*

12/27/24:I tried non-constant-current supplies but the 8A capability of these bms’ is too much for the 3000mah Samsung 30Q batteries I’m using (which spec 1.5a nominal charge and 4a quick charge. Two in series is double the volts @ same amps so I have to limit the charge current to 4a or less and I’m choosing to set it at 3a so it can drive the pi’s and router when 12v is available.)There is no interruption in supply power when the 12v input is cut off, only a slight change in the voltage from the charger’s 9v down to the batteries 8.4v.orig:These are very small, a little over 1” long. The solder pads are very nice and quite easy to get at with a solder tip plus they take solder very nicely. The two I set up so far worked perfectly. I put them on the back side of 2x battery holders and the solder pads were perfectly positioned to take the wires from the holders tabs in straight runs. Even charging at 8a these only get slightly warm, I didn’t run them longer than maybe 10 min but if they were going to get HOT they would have by then. I’m impressed.I’m using these to make a UPS for two pi02 raspberry pi’s and a Slate router. I feed it from a constant current Drok 5a variable DC-DC converter and this works perfectly. The bms’ sense the battery voltage and apply a charge if needed automatically shutting off once the voltage rises. I am experimenting with what regulator to use to feed the battery voltage to the USB sockets for the rpi’s and the router - a cheap 3a unit may run hot at the ~2a I expect will be needed. Another Drok 5a converter would work but might be overkill.I could not be happier with these.

### ⭐⭐⭐⭐⭐ Working perfectly.
*by M***R on June 5, 2025*

So far these are great little protection boards. No problems at all. Easy to solder to.

### ⭐⭐⭐⭐ Seems to work fine
*by P***Y on November 28, 2021*

As with most of these battery management circuits, you can hook them up and they appear not to work at first. You need to apply even the briefest charging voltage to the circuit to get it to function. This one was purchased to make a battery pack for a massage Thumper. TRhe old battery pack was not available so I used this to make a new one from two 18650 cells. It takes a charge and is thumping away.

## Frequently Bought Together

- ACEIRMC 2S 7.4V 8.4V 8A 18650 Charger PCB BMS Protection Board for Li-ion Lithium Battery Cell (8pcs)
- 15pcs 5V 1A TP4056 Charging Module Type-C USB 18650 Lithium Battery Charger Board with Protection (Type-C USB)
- ACEIRMC 12pcs 1S 3.7V 4A 18650 Charger PCB BMS Protection Board for Li-ion Lithium Battery Cell

---

## 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.lk/products/241205835-2s-7-4v-8-4v-8a-18650-charger-pcb-bms](https://www.desertcart.lk/products/241205835-2s-7-4v-8-4v-8a-18650-charger-pcb-bms)

---

*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-02-23*