|
Sunday, 10 February 2008 |
Battery Pack for the Fonera
Here’s a really cheap way to make a battery pack for the Fonera. It
runs off of 4x AA Batteries, which would give the Fonera 5-6 volts
(depending on type of battery). The AC adapter that comes with it says
it provides 7.5v on the plug, but I measured 8.5v with a DMM. I knew 4x
AA batteries would work because I have another Fonera running off of 5v
power from the USB bus.
Visit the forums to discuss this guide.
1.
First, you need to get a battery holder. I found this one from Radio Shack to be perfect. It’s great because it has an on/off switch built right on and it’s only $1.99.
2.
Cut the connector off of the Fonera AC adapter. Leave about 2-3 inches of wire on the end. Do the same with the wiree coming off of the battery pack. Strip about an 1" off of the end of each wire.
3.
This is important. You need to figure out which wire is positive and
which is negative. On the AC adapter that came with my Fonera 2200, the
dotted lines indicated the negative wire and the writing indicated
positive.
To figure this out, plug the AC adapter into the wall and use a multimeter to test both wires. If you get a negative reading, then you have the wires switched around (the positive lead is on the negative wire and the negative lead is on the positive wire).
4.
Solder the wires together (red to positive, black to negative). Use flux if you’re having trouble making the solder stick.
5.
Then you’re going to have to cover the solder points. Heat shrink tubing would be ideal. Instead, I used electrical
tape to cover each point individually, then I wrapped the entire area
with the tape.
6.
Throw some batteries in and you’re done. Use velcro or double sided
tape/adhesive to attach the battery pack to the Fonera. I would
estimate about 8 hours with the wireless on, but it may vary depending
on the batteries used.
Visit the forums to discuss this guide.
|
|
Tutorials and Guides 
