---
product_id: 486656578
title: "Comidox 3S 12V 10A 18650 Lithium Battery Protection Board BMS Li-ion Charger Protection Module Anti-Overcharge/Over-Discharge/Over-Current/Short Circuit 3Pcs"
brand: "comidox"
price: "€ 41.68"
currency: EUR
in_stock: true
url: https://www.desertcart.hr/products/486656578-comidox-3s-12v-10a-18650-lithium-battery-protection-board-bms
store_origin: HR
region: Croatia
---

# 10A max discharge current -40 to +50°C operating temp Multi-layer battery protection Comidox 3S 12V 10A 18650 Lithium Battery Protection Board BMS Li-ion Charger Protection Module Anti-Overcharge/Over-Discharge/Over-Current/Short Circuit 3Pcs

**Brand:** comidox
**Price:** € 41.68
**Availability:** ✅ In Stock

## Summary

> 🛡️ Power your gear with confidence — safety and performance in one sleek board!

## Quick Answers

- **What is this?** Comidox 3S 12V 10A 18650 Lithium Battery Protection Board BMS Li-ion Charger Protection Module Anti-Overcharge/Over-Discharge/Over-Current/Short Circuit 3Pcs by comidox
- **How much does it cost?** € 41.68 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/486656578-comidox-3s-12v-10a-18650-lithium-battery-protection-board-bms)

## Best For

- comidox enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Over 30,000 hours of reliable operation under extreme conditions
- • **Compact & Versatile Design:** Slim 50x16x1mm board fits diverse 12V lithium battery packs
- • **Comprehensive Safety Shield:** Protects against overcharge, over-discharge, over-current & short circuits
- • **Powerhouse Current Handling:** Supports up to 10A discharge for high-demand devices
- • **Ultra-Low Quiescent Current:** Consumes less than 6μA to maximize battery life

## Overview

The Comidox 3S 12V 10A Lithium Battery Protection Board is a compact, high-performance BMS module designed for 3-series 18650 or polymer lithium batteries. It delivers robust protection against overcharge, over-discharge, over-current, and short circuits, ensuring battery longevity and device safety. With a max discharge current of 10A, ultra-low quiescent current, and a wide operating temperature range (-40°C to +50°C), it’s ideal for professional-grade 12V electronic applications like vacuum cleaners, LED backup power, and solar street lights. Its durable design guarantees over 30,000 hours of reliable use, making it a must-have for millennial professionals seeking dependable power management.

## Description

Specifications:  3 strings: 3 18650 batteries or polymer lithium batteries in series Polymer battery rated voltage: 10.8V Rated voltage of 18650 or 3.7V lithium battery: 11.1V After the lithium battery is fully charged, the voltage is 12.6V.  Maximum discharge current limit: 10A Overcharge voltage range: 4.25-4.35v±0.05v Over-discharge voltage range: 2.3-3.0v±0.05v Maximum working current: 5-8A Maximum instantaneous current: 9-10A Quiescent current: less than 6uA Internal resistance: less than 60mΩ Working temperature: -40---+50 °C Storage conditions: -40-- +80 ° C Effective life: more than 30,000 hours Size: 50*16*1.0mm /1.96*0.62*0.039inch Note:  The selected protection board current should not be less than the controller current limit of the product you are using.  Lithium battery should be charged with lithium battery special charger, do not use lead-acid battery charger, lead-acid charging may have high voltage breakdown protection board MOS tube, resulting in protection board overcharge is not protected.   Charger voltage setting:  Use your battery pack number *4.2V This is the charging voltage of the non-ferrous lithium battery. The charging voltage of the iron-lithium battery is the number of battery strings *3.60V, and the charging current standard is 0.2 times of the capacity.  We highly appreciate all customers opinions to improve the selling, also if anything you unsatisfied, please contact us for probable best solution.   Package Includes: 3Pcs

## Features

- The power range described is applicable to the following products: vacuum cleaner, massager battery pack, LED light backup power supply, 12V electronic products, solar street light battery pack, monitoring standby power supply, etc.
- With overcharge, over discharge, over current, short circuit and other protection functions, for a variety of shapes of various shapes 3.7V lithium battery.
- High quality MOSFETs such as VISHAY, AOS, IR, etc., FR-4 low temperature coefficient sheet, well designed and tested.
- It is small in size and suitable for many applications requiring high integration and low cost. It can meet various performance requirements and ensure the absolute safety and reliability of the battery pack.
- This protection board can not be used for iron ion polymer battery, hand drill battery pack, electric fish battery pack, electric bicycle battery pack, 2 pieces and 24V series, 775 (4A) or above motor, 1W fisheye LED lamp.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Comidox |
| Manufacturer | china |
| Model | CP219 |
| Product Dimensions | 5 x 15 x 10 cm; 9 g |
| Item model number | CP219 |
| Charging Time | 30000 Hours |
| Batteries Included | No |
| Batteries Required | No |
| Manufacturer | china |
| Item Weight | 9 g |

## Product Details

- **Brand:** Comidox
- **Colour:** Black Blue
- **Product Dimensions:** 5D x 15W x 10H Centimeters
- **Output Voltage:** 4.2 Volts, 12 Volts
- **Input Voltage:** 12 Volts

## Images

![Comidox 3S 12V 10A 18650 Lithium Battery Protection Board BMS Li-ion Charger Protection Module Anti-Overcharge/Over-Discharge/Over-Current/Short Circuit 3Pcs - Image 1](https://m.media-amazon.com/images/I/619KvUZFD5L.jpg)
![Comidox 3S 12V 10A 18650 Lithium Battery Protection Board BMS Li-ion Charger Protection Module Anti-Overcharge/Over-Discharge/Over-Current/Short Circuit 3Pcs - Image 2](https://m.media-amazon.com/images/I/61baNeuGEdL.jpg)
![Comidox 3S 12V 10A 18650 Lithium Battery Protection Board BMS Li-ion Charger Protection Module Anti-Overcharge/Over-Discharge/Over-Current/Short Circuit 3Pcs - Image 3](https://m.media-amazon.com/images/I/61y62bsUiHL.jpg)
![Comidox 3S 12V 10A 18650 Lithium Battery Protection Board BMS Li-ion Charger Protection Module Anti-Overcharge/Over-Discharge/Over-Current/Short Circuit 3Pcs - Image 4](https://m.media-amazon.com/images/I/61oOaYv1PPL.jpg)
![Comidox 3S 12V 10A 18650 Lithium Battery Protection Board BMS Li-ion Charger Protection Module Anti-Overcharge/Over-Discharge/Over-Current/Short Circuit 3Pcs - Image 5](https://m.media-amazon.com/images/I/61hUCqn5lfL.jpg)

## Questions & Answers

**Q: Will this bms work with a 3s5p 18650 battery pack?**
A: it should work, but it sounds like you might want to be drawing significant amperage, and these will limit you to 10 amps, you should try not to need more than 5 amps through these if it is continuous current.

if you are going to do this with these BMS , you will want to make sure the batteries all perform nearly identically, because charging will stop when one of the sets of 5p reaches 4.2v, so if one cell out of those 5 charged to 4.2v while the other 4 are still down at 3.9v, you will never get maximum potential out of the 4 cells, because they will all stop charging every time. if this offset becomes large enough, you could have one cell charging the other cells "balancing" to have the same voltage, this could produce more problems down the road after several cycles.

i only like to use them with 3 cells in series per BMS. i have considered using 2 or 3 bms in parallel to make a larger bank, but i didn't want to put more than one cell per terminal on the BMS

**Q: How would i adjust the voltage for use with 1.5v batteries such as aa or aaas?**
A: It is not the battery form factor that determines the compatibility.  It is the chemistry.  These will work with 3 rechargeable Lithium Ion or Lithium Polymer batteries (3.7V nominal, 4.2V totally charged) in series.  I am using it with 12 cells of 21700 batteries in a 3S4P configuration.  A pack of 3 AA or AAA Li-Ion or Li-Po batteries should work just fine.

**Q: What is the output voltage and amperage from P+ and P-?**
A: Specifications:
3 strings: 3 18650 batteries or polymer lithium batteries in series
Polymer battery rated voltage: 10.8V
Rated voltage of 18650 or 3.7V lithium battery: 11.1V
After the lithium battery is fully charged, the voltage is 12.6V.
Maximum discharge current limit: 10A
Overcharge voltage range: 4.25-4.35v±0.05v
Over-discharge voltage range: 2.3-3.0v±0.05v
Maximum working current: 5-8A
Maximum instantaneous current: 9-10A
Quiescent current: less than 6uA
Internal resistance: less than 60mΩ
Working temperature: -40---+50 °C
Storage conditions: -40-- +80 ° C
Effective life: more than 30,000 hours

**Q: Is there a minimum output to keep these alive?  my application only draws about 60ma.  some bms units require more.**
A: I drew 40 mA, and it shut off to protect the batteries exactly as it was supposed to.

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-06*