A week or 2 at best, I use my PC allot and I love my wireless keyboard without a doubt and I shudder at the thought of going back to a tethered keyboard, so I did the best thing I could think of.
I took an old LG trac phone that was still in working order with a good battery and solved my battery issue.
My battery does not need to be charged but once a month and that is with leaving the power on while not in use.
This is for the most part extremely simple and should take no longer then 5 or 10 mins of you're time if everything is on hand when starting.
Power tools such as Drill's and Saw's can easily hurt you, If you could ask my Ex friend Ray about the time I used him for a Vise, He would tell you that it sucked and DON'T DO THAT. Soldering Irons can cause severe burns and fires, use in a dry area keep any and all flammable liquids away from your work area, And always keep a fire extinguisher close by do not breath in vapors from flux or solder. Use proper care when using your Iron. I am not responsible for any damages to you or your PC ,man or woman cave, bat mobile , motor home, boat, flying saucer, jet aircraft or any other thing you may or may not own should you go forward and do this. As I know about enough to be dangerous.
Step 1: Tools and Parts
Working Cellular Phone with battery and charger.
I used a Molex connector only because it is what I had on hand as I try to spend little or no money on anything that I make.
You may use any kind of 2 lead connector.
Step 2: Phone AKA Battery Charger
As stated before this battery here will last 30 days or better of hard gaming and typing in general on a full charge.
As I have already built this battery I am using some older photo's to guide you along.
Here I put a very small amount of flux on the Positive and Negative terminals.
Strip and Tin you're wires and solder to the battery use as little solder as possible.so the battery will fit into the phone for recharging.
once wire are secure tape them down good with a few wraps of Electrical Tape check fit into phone for recharging.
This project is now complete.
Thus I shall never have to buy AA batteries for simple things like my keyboard or an custom mod MP 3 player or my other Instructable projects, there is a huge list of applications that could benefit from recycling these batteries and also keep these little toxic bad boys out of the environment .