How - or what\'s the best way - to retrieve the device\'s current battery level in .NET CF 3.5 on Windows Mobile 5 and 6?
You probably want the State Notification Broker class that Noldorin is recommending. I don't think it gives you very fine grain information. You get information like Low or Very Low. If you need specific percentages consider using GetSystemPowerStatusEx.
HOWTO: Get the Device Power Status GetSystemPowerStatusEx