Video DIY USB Charger

Garminbozia

Garminbozia

New member
Don't know if y'all already know about this. I seen it the other day for the first and thought it's really near. Figured I'd share it. You can charge phones or anything with a usb cord.

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but they're meant to run off 12-15v...how is a 9v batt supplying enough voltage? second just soldering a small solar panel to the 12v car charger will acheive the same thing...if the panel doesnt already have a converter with it.
 
ped said:
but they're meant to run off 12-15v...how is a 9v batt supplying enough voltage? second just soldering a small solar panel to the 12v car charger will acheive the same thing...if the panel doesnt already have a converter with it.
Click to expand...
That is a good question about how a 9v battery can do the job, maybe a car charger concerts the voltage or the amperage is the same??? I'll have to Google that...And if this does work then it'll be more dependable than a solar charger. Cheaper too.
 
Hmm, according to an answer on qoura it's possible. A usb only uses 5v. But they said one 9v battery will charge a phone to about 15% It's still neat and it'll fun to try out.
 
right but the car charger is designed to output 5v converted from 12v. If it's only being fed 9v it would have to pull excessive amps from the battery running it dead quicker. I bet a pack of 8 AAA (which is 12v) would do a much better job and you can get the pack holders from salvage or radio shack (and online im sure).

then if you get re-chargables you can hook a small 12v panel right to them or charge the pack directly off a cig lighter port.
 
ped said:
right but the car charger is designed to output 5v converted from 12v. If it's only being fed 9v it would have to pull excessive amps from the battery running it dead quicker. I bet a pack of 8 AAA (which is 12v) would do a much better job and you can get the pack holders from salvage or radio shack (and online im sure).

then if you get re-chargables you can hook a small 12v panel right to them or charge the pack directly off a cig lighter port.
Click to expand...
Lol you can recharge your recharger. Niiice
 
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