Do you have anything in your house that runs off battery power? (loaded question, I know)
FedCo Electronics has the battery you need. Laptop, PDA, iPod, standard and special application. They have batteries you probably never knew existed.
Need a power adapter? They have them too!
Don't let the prices listed on the web site scare you. Contact them and find out what the current price is. You may be pleasantly surprised.