[Type 1] 3.7V BMS 1S 3A Rectangular 18650 Lithium Battery Protection Board

SKU: 11783521
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3.7V Lithium Battery Protection Board for Polymer 18650 Bonding Pad (can Spot/Weld) 3A Overcurrent Value

This is a 1S 3A Lithium-Ion BMS Module. This is a single-cell Lithium Ion or Lithium Polymer battery charge and discharge protection module. It provides overcharge, over-discharge, and overcurrent protection. The charging voltage must be 4.2V. The module is compact and can be fixed directly with the battery. 


  • B+: Battery Positive
  • B-: Battery Negative
  • P+: Charge / Discharge Positive
  • P-: Charge / Discharge Negative


The protection board cannot be used for lithium iron phosphate batteries, hernia lamps, hand drill battery pack, electric fish battery pack, electric bicycle battery pack, buggy battery, 775 (4A) above the motor, 1W fisheye LED lamp.

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