5V 2A Charge and Discharge Boost Module 3.7V/4.2V

SKU: MOD-042

Sale priceR 29.77

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5V 2A Charge and Discharge Boost Module 3.7V/4.2V

This is a DC charging and discharging integrated module, with 5V normally open output, which is not affected by load access and has a maximum load current of 2A. It features 4 levels of charge/discharge electricity indication and button-controlled output. The module comes with a built-in power management circuit that boosts a lithium battery to 5V and supports charging and discharging simultaneously. Besides, it has battery protection which makes it applicable for batteries without a protective board.

This tiny board is all you need to use a 3.7V Lithium battery. It charges as well as steps the battery up to 5V with up to 2A to power equipment like microprocessors and sensors. In addition to safely charging a lithium battery the module also provides the necessary protection required by lithium batteries. This module switches off when there is no load being drawn from it.

Pin Out For Charging and Discharging.

5V 2A Charge and Discharge Boost Module 3.7V/4.2V Specification

  • Charge voltage: DC 4.5V-5.5V(Recommend DC 5V)
  • Charging current: 0-2.1A
  • Charge quiescent current: 100uA
  • Full charge voltage: 4.2V+-1%
  • Discharge current: 0-2.4A
  • Discharge quiescent current:50uA
  • Discharge conversion efficiency: MAX 96%
  • Output voltage: 5V
  • Output current: 0-2.4A
  • Operating ambient temperature: -20°to +85°
  • Battery protection: OCP/OVP/SCP/OTP
  • Size: 25x16x4mm
  • Weight: 3g


  • 4 levels of charge/discharge electricity indication
  • Button-controlled output
  • Built-in power management circuit


  • Car charging retrofit
  • Driving recorder power supply
  • DIY mobile power bank
  • Mobile phone/laptop portable charging device

  • 5V 2A Charge and Discharge Boost Module 3.7V/4.2V Pin Description:

    • VIN: Charge port positive input +
    • GND: Charger Negative Input -
    • BAT: Lithium Battery +
    • GND: Lithium Battery -
    • GND: Output negative output -
    • VOUT: Output Positive Output +
    • KEY: Output Enable Trigger Port (Low Pulse Trigger)

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