Does anyone else have a problem with their battery getting much hotter when charging on the car cradle or desk dock? I just bought one of each, and notice that the battery is on average 10-15 degrees hotter than when charging on the stock charger alone. I can't figure out why and if its something I should be worried about.

 

I've noticed the car cradle doesn't charge as fast as using the car charger alone....it charges about as fast as using the usb on my laptop.