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  • Single protection board size: 28mm * 3mm
  • With nickel bar Size: 90mm * 3mm
  • Linelength: 80mm
  • Overcharge detection voltage: 4.275±0.025V
  • Overcharge recovery voltage: 4.075±0.025V
  • Over-discharge detection voltage: 2.50±0.1V
  • Over-discharge recovery voltage: 2.90±0.1V
  • Overcurrent protection current: 2.5±0.3A
  • Normal discharge current: 2A
  • Short circuit protection time: ≤50us
  • Normal working consumption current: ≤6uA
  • Standby current consumption: ≤0.6uA
  • Working resistance: ≤50mΩ
  • Main functions: Overcharge protection, over-discharge protection, short circuit protection, over-current protection


  • 100% Brand New and High Quality
  • built-in high-precision voltage detection circuit
  • overcharge protection, over-discharge protection, over-current, short circuit protection
  • through the MOS tube can control the battery charge and discharge
  • wide operating temperature range of -40 ° C to +55 ° C
  • low current consumption

Detailed components: 2 MOS \DW01A \Seiko 8205A

  • DW01A  is a lithium battery protection circuit, in order to avoid lithium batteries due to overcharge, over discharge, current is too large lead to shorten the battery life or battery damage is designed. It has a high accuracy of voltage detection and time delay circuit.
  • 8205A  has the advantage of internal integration of two identical nmos tube for lithium battery protection circuit is very convenient.

Connection description:

  • B+ connect to battery+
  • B- connect to battery-
  • V+ for battery output input+
  • V- for battery output input-

Package Included:

  • 10 x 3.7V 1S Battery protection board

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