1S 3.7V 3A 2MOS BMS Li-ion 18650 Battery Protection Board

(1 customer review)

In stock

SKU: 1165397
  1. Charging voltage: 3.7V
  2. Overcharge Detection Voltage: 4.25 ± 0.05V
  3. Overcharge release voltage: 4.23 ± 0.05V
  4. Over discharge detection voltage: 2.45 ± 0.1V
  5. Upper Limit Continuous Current: 5A


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Brand: Generic
Category: Battery Protection Board

BMS (Battery Management System) – a battery management system that is designed to monitor the status of batteries, control the process of charging/discharging the battery, etc.

This BMS module has protection against short circuits, overcharges and over-discharge. One of the functions of the charge controller is to turn off the power supply for the batteries when the maximum capacity of at least one battery is reached. This BMS controller is designed for more than 30,000 hours of operation. The maximum allowable current is 3A.

If the maximum permissible value of the supply voltage is exceeded, the charge controller activates the “protection” mode. In order to restore the module, it is necessary to re-apply voltage to the input of the BMS board or wait a while until the charge controller automatically disables protection.

Wiring Instructions:
B+     :  Connected to the battery positive.
B-      :  Connected battery negative.
P+     :  For the battery pack output-input positive
P-      :  For the battery pack output-input negative


  1. Small size designed for a four-cell battery pack.
  2. Simple and  convenient circuit for easy connections
  3. Over-charge/Over-discharge Protection.
  4. Pre-soldered Nickel Strip ready to mount on battery.

Package Includes:

1 x 1S 3A 18650 Lithium Battery Protection Board

SKU: 1165397 Category:
Charging voltage


Overcharge Detection Voltage

4.25 ± 0.05V

Overcharge release voltage

4.23 ± 0.05V

Over discharge detection voltage

2.45 ± 0.1V

Upper Limit Continuous Current


Overcurrent Detection Current


Width (mm): 4.2
Height (mm): 2
Weight (gm): 3
Shipment Weight: 0.005 kg
Shipment Dimensions: 3 × 3 × 1 cm

Length (mm)


Width (mm)


Height (mm)


Weight (gm)


Shipment Weight

0.003 kg

Shipment Dimensions

8 × 6 × 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.  Reimbursement or 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 1 review

5.0 overall

Add a review

  1. Purushottam Agrawal (verified owner)

    Excellent product and very quick delivery.

    Purushottam Agrawal

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Country Of Origin: China

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