HX-2S-A2 Circular 2S 8.4V BMS 18650 Lithium Battery Protection Plate

(1 customer review)

In stock

SKU: 299509
  1. Overcharge voltage range: 4.25-4.35v ± 0.05v
  2. Charging voltage: 8.4V-9V
  3. Upper limit operating current: 5A
  4. Upper limit instantaneous current: 7A
  5. Quiescent current: less than 10uA
  6. Internal resistance: less than 300mΩ


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Category: Battery Protection Board
Tags: Battery Protection, Li-Ion, 18650

This is an HX-2S-A2 Circular 2S 8.4V BMS 18650 Lithium Battery Protection Plate With short circuit protection, overload, discharge and overcharge protection.  Due to its small size, excellent performance and low cost, the product is suitable to meet a wide range of requirements.

  • The battery will heat when using it, it means the battery does not apply, please don’t keep using because the battery will be damaged soon.
  • The protection board cannot be used for lithium iron phosphate battery, hernia lamp, hand drill battery pack, electric fish machine battery pack, electric bicycle battery pack, children’s car battery, 775 (4A)motor, 1W fish eye LED light!
Connector :
  • B +:   Connected to the battery positive
  • B-: Connected battery negative
  • MBConnect the battery 1 to the connection point before battery 2
  • P + :  Charge / discharge side positive (shared charge / discharge side)
  • P- :    Connection / discharge terminal negative (charge / discharge side shared)

Features :

  1. It is safe and reliable to use.
  2. Small and compact.
  3. Easy connections.

Package Includes :

1 x HX-2S-A2 Circular 2S 8.4V BMS 18650 Lithium Battery Protection Plate



Overcharge voltage range

4.25-4.35V ± 0.05V

Overpressure voltage range:

2.5-3.0V ± 0.05V

Charging Voltage


Upper limit operating current


Operating Temperature (°C)

-40 to 90

Quiescent current

less than 10uA

Internal resistance

less than 300mΩ

Diameter (mm):


Thickness (mm):


Shipping Weight 0.01 kg
Shipping Dimensions 2 × 2 × 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

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  1. paulranjitkumar05 (verified owner)



HX-2S-A2 Circular 2S 8.4V BMS 18650 Lithium Battery Protection Plate

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.

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Country Of Origin: China