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

55.46 Incl. Tax

Availability: In stock

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This is an HX-2S-A2 Circular 2S 8.4V BMS 18650 Lithium Battery Protection board 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 car battery, 775 (4A)motor, 1W fish eye LED light


  • B +: Connected to the battery positive
  • B-:Connected battery negative
  • MB: Connect 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)


  • It is safe and reliable to use.
  • Small and compact.
  • Easy connections.


Model HX-2S-A2
Overcharge voltage range 4.25-4.35V±0.05V
Overpressure voltage range 2.5-3.0V±0.05V
Charging Voltage 8.4V-9V
Upper limit operating current 5A
Operating Temperature (°C) -40 to 90
Quiescent current less than 10uA
Internal resistance less than 300mΩ
Diameter (mm) 18
Thickness (mm) 3

* product image for illustration purposes only. actual product may vary.


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