---
product_id: 122370360
title: "daier 24V 6S 40A 18650 Li-ion Lipolymer Battery BMS PCB Balance for ebike ebicycle"
brand: "daier"
price: "10986 Ft"
currency: HUF
in_stock: true
reviews_count: 13
category: "Daier"
url: https://www.desertcart.hu/products/122370360-daier-24v-6s-40a-18650-li-ion-lipolymer-battery-bms
store_origin: HU
region: Hungary
---

# 40A High Discharge 24V 6-Cell Power Multi-layer Protection daier 24V 6S 40A 18650 Li-ion Lipolymer Battery BMS PCB Balance for ebike ebicycle

**Brand:** daier
**Price:** 10986 Ft
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your ride with precision and protection!

## Quick Answers

- **What is this?** daier 24V 6S 40A 18650 Li-ion Lipolymer Battery BMS PCB Balance for ebike ebicycle by daier
- **How much does it cost?** 10986 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/122370360-daier-24v-6s-40a-18650-li-ion-lipolymer-battery-bms)

## Best For

- daier enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Durable PCB:** Sleek 88x34x2.8mm form factor with heavy-duty components built to last
- • **Advanced Balance Circuit:** Keeps each cell perfectly in sync for longer battery life
- • **Robust 24V 6-Cell Design:** Optimized for stable, high-capacity ebike power delivery
- • **40A Split-Mouth Discharge:** Handles intense current bursts without breaking a sweat
- • **Comprehensive Safety Suite:** Overcharge, over-discharge, overcurrent & short circuit protection for peace of mind

## Overview

The daier 24V 6S 40A Li-ion BMS PCB is a premium battery management system designed for ebikes, featuring a 6-cell balance circuit and robust 40A discharge capability. It offers comprehensive safety protections including overcharge, over-discharge, overcurrent, and short circuit safeguards, all housed in a compact, durable PCB optimized for long-term high-amp usage.

## Description

100% Brand New and High Quality This product is 6 string 24V 6-Cell lithium battery power protection board. Split-mouth 40A discharge current. With Balance circuit, size: 88*34*2.8mm/3.46*1.33*0.11 inch. Protection board with overcharge protection, over discharge protection, over current protection, short circuit protection

Review: Visibly better quality than other 6S 40AMP BMS units although more expensive - I bought this unit along with other 6s 40AMP BMS which look identical in picture but there is a difference you can see once its in your hands ! First the PCB these units use are 30% heavier than the others . Also the FET's are visibly larger . This tells me this unit might actually stay in one piece if it were to be subjected to long term high amp usage . This unit much more expensive than others of same type .
Review: Not good - Defective Dont buy.

## Features

- This product is 6 string 24V 6-Cell lithium battery power protection board
- With Balance circuit
- Split-mouth 40A discharge current
- Protection board with overcharge protection, over discharge protection, over current protection, short circuit protection
- Size: 88*34*2.8mm/3.46*1.33*0.11 inch

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07QQT99P8 |
| Best Sellers Rank | #305,589 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #93 in Cycling Electronics |
| Customer Reviews | 3.8 3.8 out of 5 stars (70) |
| Date First Available | April 15, 2019 |
| Item Weight | 0.634 ounces |
| Item model number | E1107 |
| Manufacturer | daier |
| Package Dimensions | 5.7 x 2.6 x 0.5 inches |

## Product Details

- **Battery Capacity:** 24 Volts
- **Battery Cell Composition:** Lithium Ion
- **Brand:** daier
- **Recommended Uses For Product:** Bicycle
- **Unit Count:** 1.0 Count

## Images

![daier 24V 6S 40A 18650 Li-ion Lipolymer Battery BMS PCB Balance for ebike ebicycle - Image 1](https://m.media-amazon.com/images/I/61FnPmDyYgL.jpg)

## Questions & Answers

**Q: is there a specific order that wires need to be soldered to the board? Mains first then balanced leads for example?**
A: Assuming the wires are not connected to anything on the other end (aka your battery holder is empty and you have no load or charger connected ) you should be fine with any order.   I would recommend moving from one side of the board to the other so you don't concentrate too much heat in one place. Try not to unsolder the pads from the board by applying to much heat. Don't solder live wires!

**Q: Where does the charging lead connect?**
A: Not answering the question, but my BMS had the same issue!  No voltage/current at P+/P- when everything else is wired up!

**Q: can anyone tell me how to connect to the load? do I use p+ and p-?**
A: Initially it was not  clear to me where the charge and where the load connected. Other reviews clarified that the both the charger and the load connect to the P+ and P-. The BMS auto switches between input and output depending on the voltage on P+P-.  I tested it on my Power wheels car and the full 20 plus volts were on the (P+P=) output terminals. With the charger connected for couple hours it raised the voltage from 3.6 to 3.8. One cell was at 4.0v . I will leave it on the charger overnight and see if it balances better. 
If you connect your load to B+B= , it will work but you will not have any load overcurrent or under voltage protection for your battery pack.  You would be able to run your device till the battery is totally dead, which damages l-ion cells.

**Q: Can I wire two of these in series to make a 12s?**
A: Yes, you probably could, but just be aware of the fact that if the BMS is unhappy with the 18650's that you have attached, it will shut down, so you're adding more points of failure by wiring two in series. I actually struggled with this 6S BMS for a while, and nearly gave up on it, because it kept shutting down, until I realized that the resistance of some of my cells was too high. After re-grading all my cells and culling the highest resistance cells, the BMS was able to stay up.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Visibly better quality than other 6S 40AMP BMS units although more expensive
*by R***E on March 31, 2025*

I bought this unit along with other 6s 40AMP BMS which look identical in picture but there is a difference you can see once its in your hands ! First the PCB these units use are 30% heavier than the others . Also the FET's are visibly larger . This tells me this unit might actually stay in one piece if it were to be subjected to long term high amp usage . This unit much more expensive than others of same type .

### ⭐ Not good
*by D***G on June 24, 2025*

Defective Dont buy.

### ⭐⭐⭐⭐⭐ Works perfectly.
*by D***R on September 8, 2020*

So far so good! I haven't put it under much load, maybe 20 amps, but so far it works flawlessly. Cells stay balanced, don't overcharge or over discharge.

## Frequently Bought Together

- daier 24V 6S 40A 18650 Li-ion Lipolymer Battery BMS PCB Balance for ebike ebicycle
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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-03-22*