Mine is having the same problem after recently installing 2.0b3 and attempting to use the clock for the first time. It doesn't remember the time settings after being turned off (either completely removed from power or in-car with accessory power off). I'm assuming this is not the correct behavior. How long should it take the RTC cap to charge to its full 3.5v? Does it only charge when the unit is on? Or should it also charge in the car with everything off? - Eric