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Small green rectangular circuit board with USB connector and components

Adafruit

Adafruit PowerBoost 1000 Charger 1A 1000C

SKU CH-D9WQ-MJAJX

Boosts a 3.7 V LiPoly/LiIon cell to 5 V at up to 1000 mA with a low-battery LED at 3.2 V

  • TypeEngineering Development Tools
  • Boosts 3.7 V LiPo to 5 V at 1 A for portable projects
  • Low-battery LED warns at 3.2 V to protect cells
  • Synchronous 700 kHz converter delivers high efficiency
  • 2 A internal switch sustains 1000 mA output from small packs
  • Safe 5 V supply for Arduino, Raspberry Pi, BeagleBone

Portable USB Boost Charger

The Adafruit PowerBoost 1000 Charger is a compact boost converter module designed to deliver a stable 5 V USB output from a single 3.7 V LiPoly or LiIon cell. It integrates a 2 A internal switch and synchronous conversion running at 700 KHz to provide up to 1000 mA for portable projects. A built-in low-battery indicator LED activates when the cell voltage drops below 3.2 V, helping to protect the battery from over-discharge during use.

Makers needing 5 V from one cell

This board suits hobbyists and engineers powering 5 V microcontrollers such as Arduino, Raspberry Pi or Beagle Bone from a single lithium pack. It is not intended for applications requiring more than 1 A of continuous output current. Builds that need higher current, multiple voltage rails or integrated battery management circuitry should consider alternative power solutions.

1 A maximum output current

The key specification is the 1000 mA peak output capability provided by the 2 A internal switch. This limit determines whether the module can meet the load requirements of a given portable design.

Highlights

  • Boosts 3.7 V LiPo to 5 V at 1 A for portable projects
  • Low-battery LED warns at 3.2 V to protect cells
  • Synchronous 700 kHz converter delivers high efficiency
  • 2 A internal switch sustains 1000 mA output from small packs
  • Safe 5 V supply for Arduino, Raspberry Pi, BeagleBone

Specifications

TypeEngineering Development Tools

Questions about this item

How much heat or noise does the 700KHz boost converter produce during continuous operation?

The synchronous converter runs at 700KHz for high efficiency, so it generates minimal heat and no audible noise while delivering 1000mA from a 3.7V LiPoly cell.

What battery and connectors must I already have to use this board?

You need a 3.7V LiPoly or LiIon pack with a JST-PH connector; the board provides a USB micro-B charge port and 5V/1A output headers for your project.

Will the low-battery LED still protect my older 3.7V LiIon cells from over-discharge?

Yes, the indicator lights at 3.2V, which is the recommended cutoff for both LiPo and LiIon chemistries, so legacy packs are safeguarded.

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