I dont actually own the camera, but I have customers who use it, and my grandfather has one. I have seen pictures from my grandfathers and they look great.
The rechargeable battery actually works great for the camera, its the alkaline 6 Volts that are terrible. Since you have the solar panel with that camera you dont have to worry about recharging the battery, unless its cloudy for several days.
When you need replacement 6 Volt rechargeables, they can be found here:
http://www.bohannonbattery.com/html/sla.html

Josh