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

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26.37 26.37 ZAR 26.37 VAT Included

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Power Module

Internal Reference: MOD-042

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)