On 04.16.09, In How To, by Household Hacker
Change a normal 9v battery into a life saver. If you have ever run out of juice on your phone and could really use a quick charge then you need a USB battery.
Shopping list:
1 5.1v zener diode
1 330-ohm resistor
1 9v battery connector
1 9v battery
solder and soldering iron
(you can get all of this at radio shack)
Instructions:
1. Solder the Zener diode to the left and right USB connector prongs.
2. Solder the black wire of the 9v connector to the left prong and the right wire to the resistor.
3. solder the other end of the resistor to the right prong.
4. Hook up battery and go to town.
Music: DoKashiteru – http://ccmixter.org/files/DoKashiteru…
7 Responses
Can the 9v battery be replaced by 4 AA batteries
Does this work with the blakberry storm aswell?
household hacker,
Me and my brother came up with a much simpler way to do the usb battery hack with more ease and for the soldering-impaired, as we do not have a solder gun. We had some useless car chargers for cell phones laying around and decided to make use of them. Turns out they come completely soldered with resistors and an LED light so you can tell if your connection became lost. From there it’s just tape, tape, and more tape untill its on your way to awesomeness. I hope to have a vid of it soon, but i need a camera first since the old one got left in the rain.
-Mazter
is there away to get a schematic? I’m a little confused …the zener diod is in paralell but the resister is it in series???
Also I had an idea and wanted to know if this might work…how about a photovoltaic solar cell connected to a rechargeable nickel cadmium 9volt battery conected to it so when it’s ideling it can recharge the battery until needed?
This rel nice and it was so easy to make,thanks now i do not need my computer to charge my ipod. Thanks u guys.
can anyone here that has made this draw up a schem in paint lol… im not getting it fully… if you do, can you post it up on imageshack? ty ty ty… i got all the parts, but not sure how to place it all properly and have no Multi-Meter still working to test it all out lol