The myJOOS application lets you monitor what your JOOS Orange is doing in real time. The myJOOS Dashboard will tell you how charged your battery is and how much instantaneous solar power is being generated (if any). myJOOS applications will display an energy dashboard like the one shown here. myJOOS applications are free, but you must agree to an End User License Agreement (EULA) to receive them. Just plug your JOOS Orange into your computer using the white cable.
Note: Not currently compatible with OS X 10.7 Lion.