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Lambda Nu PowerEver

Lambda Nu PowerEver is a tiny PCB that turns any commercial USB power bank into a non-stop power supply while minimizing self-drained current. It is user-adjustable and is compatible with nearly all power banks in the market. The PowerEver enables the power bank to never run short of mobile power for most portable USB-powered devices.

The Lambda Nu PowerEver is designed to consume as little current as possible while passing most of it to the connected device. This current is freely adjustable using a single push button on the backside of the PCB to increase or decrease the draw to suit the power bank's design. 

Features

  • Use commercial USB mobile phone power banks as a regular 5VDC power supply for powering consumer electronics or Single Board Computers (SBC)
  • User-adjustable current draw to suit almost any power bank
  • Designed to consume as little current as possible
  • Extremely compact form factor
  • Fully open-source with complete schematics and source code provided for immediate tweaking
  • Eliminates the possibility of power surges and AC adapter noise

Applications

  • Consumer electronics
  • Arduino or ESP8266 boards
  • Low-power mobile sensors
  • Any low-current device that can be powered by USB

Specifications

  • Microcontroller
  • Power
    • 5VDC powered by any USB mobile power bank
    • Adjustable total current drain from 110mA down to 3mA (16.5mA default)
  • Status Display
    • 1x blue LED for visual feedback
  • Buttons and Connectors
    • 1x USB Type-A male for connecting to a power bank
    • 1x USB Type-A female output to user loads
    • 1x push button
  • Dimensions and Weight
    • 16mm x 50mm 0.6" x 2.0")
    • 5.9g (0.21oz)

Videos

Accessories

Lambda Nu PowerEver

The Lambda Nu USB-5P Breakout Terminal (CS-POWEREVER-02) enables the connection of devices that don't have a standard power connector. The USB-5P Breakout Terminal features a USB Type-A male for connecting to the PowerEver. A 5-pin screw terminal connector enables the use of 8AWG to 28AWG jumper wires.

Board Layout

Lambda Nu PowerEver
Published: 2021-03-22 | Updated: 2022-03-11