1S 3.7V 9A 6MOS BMS Li-ion 18650 Battery Protection Board


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SKU: 1150661
  1. model: 1S 3.7V 9A 6MOS
  2. Product: BMS
  3. Product type: Li-ion Battery BMS
  4. Current : 12A
  5. Capacity: 2500Mah
  6. Charging voltage: 4.2v


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Brand: Generic
Category: 1S Li-ion BMS

Nowadays Li-ion batteries are most popular to be used in many indoor and outdoor gadgets, these batteries are preferred due to their high charge storage capacity. such batteries are widely used in today’s portable devices. they are compact, more efficient and have a high energy intensity compared to other types of batteries.

One drawback of such a battery is that we need to continually monitor their charging and discharging process if we do not do this, it badly affects battery life and also reduces the charge storing capacity. If we discharge such battery below a certain voltage range, then the battery cell has a high risk of damage and if we overcharge such battery then it may explode.

To overcome such issues, we can use battery protection and battery charging circuits such as this product. This is a Li-ion single-cell charger/protection circuit that can be used to charge a single cell of 15 Amp capacity or 2500Mah parallel-connected 5 to 6 li-ion cells. In this MOSFET are employed to do the monitoring task which protects our battery cells from overcharge, over-discharge, and short circuits.

Protection :

  1. Overcharge protection.
  2. over-discharge protection.
  3. short circuit protection.
  4. overcurrent protection.

Wiring instructions:

  1. B+ battery is positive.
  2. B- battery negative.
  3. P+ outputs the positive input for the battery pack.
  4. P- outputs the negative electrode for the battery pack.
  5. parallel-connected 5 to 6 li-ion cells

Features :

  1. The high-precision voltage sensing circuit
  2. The charger terminal uses high-voltage devices.
  3. Built-in three-stage overcurrent detection circuit (overcurrent1, overcurrent2, load short circuit);
  4. MOS transistors can control battery charge and discharge.

Package Includes :

1 x 1S 18650 3.7V lithium battery protection plate 6 MOS.

SKU: 1150661 Category:

1S 3.7V 9A 6MOS

Product Type


Overcharge detection voltage

4.25 + 0.05V

Overcharge disconnection voltage 4.23 + 0.05V

4.23 + 0.05V

Overdischarge detection voltage

2.45 + 0.1v

Constant Current (A)


Overcurrent detection current


Charging Current


MM IC component


Shipping Weight 0.006 kg
Shipping Dimensions 8 × 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.

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Questions and answers of the customers

  1. 0 votes
    Q Is this 9A or 12A? Title says 9A, spec says 12A... answer now
    Asked by Sparks on April 9, 2024 8:07 am

    This board operates normally at 9A but can hand... Read more

  2. 0 votes

    Yes, it is suitable 

  3. 0 votes

    No, it its not compatible capacity of this batt... Read more

  4. 0 votes

    The 1S 3.7V 9A 6MOS BMS Li-ion 18650 battery pr... Read more

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Country Of Origin: China

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