Do you have "Batteries Plus" stores in your area? The ones in my area carry a wide variety of batteries for handheld devices.

>One odd thing about Sprint: they are bad at selling accessories for their PDA phones. They don't seem to recognize it as a profit center. Many things are unavailable or out of stock when you call them to buy a phone. Their stores don't have PDA stuff, and some items are missing from their accessories website. I still don't know where to get a spare battery. Maybe a computer store.