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Reddit mentions of GEREE Waterproof DC DC Converter Module 8-50V to 5V Double USB Output

Sentiment score: 1
Reddit mentions: 1

We found 1 Reddit mentions of GEREE Waterproof DC DC Converter Module 8-50V to 5V Double USB Output. Here are the top ones.

GEREE Waterproof DC DC Converter Module 8-50V to 5V Double USB Output
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Found 1 comment on GEREE Waterproof DC DC Converter Module 8-50V to 5V Double USB Output:

u/SanDiegoMitch ยท 2 pointsr/Electricity

Something like this??

https://www.amazon.com/GEREE-Waterproof-Converter-Module-Double/dp/B00NGJO55S/ref=sr_1_9?ie=UTF8&qid=1487263184&sr=8-9&keywords=buck+boost+converter+5v

Your comment was very helpful.

Now for the size of the motor, I imagine a giant motor that was geared to turn slowly would lose a lot of power in the inefficiency of the motor, but too small of a motor, and it would probably over heat.
Should I be looking at motors based on Watts? Volts?

What prevents the generator from turning into a motor, powered by my cell phone battery? Do I need a diode or something?

Please excuse my electrical ignorance, and thanks again