Introduction: DIY Emergency Power Bank With AA Batteries and USB DC Voltage Step-up Boost Module

DIY Emergency Power Bank with AA Batteries and USB DC Voltage Step-up Boost Module

An AA battery is a standard size of a single cell cylindrical dry battery. AA batteries are commonly used in portable electronic devices. An AA battery is composed of a single electrochemical cell that may be either a primary battery (disposable) or a rechargeable battery. The exact terminal voltage and capacity of an AA size battery depends on the cell chemistry. AA batteries account for over 50% of general battery sales and i can buy it anywhere

More Homemade External Power Bank Backup Battery for Smart Phone here:


holymoses (author)2015-07-17

This module is fine, but you should never use it with more than a single Secondary Battery, and only if you trust in it´s feature to turn of reaching 0.9V, as a rechargeable one could get deeply discharged.

For deeply exploiting Primaries it is great!

About This Instructable




More by joulethief669:DIY Axi Draw Bot 4xiDraw Robotic Pen AxiDraw Homemade Robot 3D Printer Plotter CNC Laser ArduinoHomemade Laser Engraving Plotter DIY Pen Draw Mini Machine CD RW DVD Drives Mechanism CNC ArduinoHomemade Wood Mini Lathe Collet ER11 Drill DIY Headstock Chuck Spindle Tailstock Slide Mill CNC
Add instructable to: