Introduction: Portable Emergency Phone Charger
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About: I just created a youtube channel to give how-to's and quick previews of all the projects that I make in my garage. I decided in sign up for instructables in order to show more people my tutorials! Please suppo…
This video will explain everything step by step, and here are the parts you will need:
1. Two 9v batteries (and two 9v battery clips)(and wires)
2. Cheap Car charger
3. Standard Altoids Tin
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4 Comments
7 years ago
Most smart phone batteries are 1500-3300mah.
A 9V battery has 50-400mah and at 500mw load has less than 300mah capacity.
You're also losing 30% of that 2 x 300mah thru the circuit.
Just exactly HOW much does this remaining 420mah charge your phone ???
Ref : http://www.powerstream.com/9V-Alkaline-tests.htm
Reply 7 years ago
the project was based on its simplicity and an easy-to-recreate build, and I am aware that this charger is inconvenient and not usable. Thanks for commenting though! I will make a better and more convenient version 2.0!
7 years ago on Introduction
Good idea
7 years ago on Introduction
Cool project