4S 15A 18650 Lithium Battery Protection Board

(3 customer reviews)

In stock

SKU: 637002
  1. Overcharging and Over Discharging Protection
  2. Short circuit protection: Yes
  3. Applicable assembly: Nominal 3.7V Batteries / 4 strings.


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Category: 4S Li-ion BMS
Tags: 4S bms, $S 15A Battery protection board

Battery protection board, as the name suggests battery protection board is mainly rechargeable (Refers to the lithium battery) and protects the integrated circuit board. As the lithium battery, its material determines itself can not be overcharge, over-discharge, overcurrent, short circuit, and ultra-high temperature charge and discharge, so lithium battery lithium components will always follow A protective plate with sampling resistor, and a current fuse.

Providing all above features this 4S BMS board can combine 4 x 18650 battery to form a battery pack to provide up to 15V DC output at 15A current which can be used for heavy applications.

Robu.in provides a different variety of the charger protection board, for more boards clicks here.

Note: Product Image May vary from actual product in terms of Model name and labels printed 


  1. Overcharging and Over Discharging Protection
  2. Short circuit protection: Yes
  3. Applicable assembly: Nominal 3.7V Batteries / 4 strings.

Package Includes:

1 x 4S 15A 18650 Lithium Battery Protection Board


HX-4S-D20 Rev 1.1

Charging voltage range


Over-discharge recovery voltage

2.5v ± 0.05v,



Maximum Working Current


Maximum Peak current


Static current

Less than 8uA


Less than 4mΩ

Length (mm):


Width (mm):


Weight (g):


Shipping Weight 0.01 kg
Shipping Dimensions 5 × 5 × 1 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects. Replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

Based on 3 reviews

4.7 overall

Add a review

  1. Vibhor Dwivedi (verified owner)

    works good but you will definetly have trouble in hooking up a external ntc thermistor. The ic is very sensitive to noises.

    Vibhor Dwivedi

  2. varinderbhogal2015 (verified owner)



  3. Nandakumar (verified owner)

    Good Product , Works Well As Expected


4S 15A 18650 Lithium Battery Protection Board

What is Battery Management System? – BMS Building Blocks, Working & Functions

A Battery Management System AKA BMS ensures the safety of the battery pack by continuously monitoring and regulating parameters like temperature & voltage.

Questions and answers of the customers

  1. 0 votes
    Answered by the admin

    Contact at [email protected]

  2. 0 votes
    Q can i use 3.2v battery answer now
    Asked by indubiomedix on July 14, 2020 11:14 am

    you can use li-ion battery of 3.7v for this boa... Read more

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Country Of Origin: China