Hello, I use a Kyocera charger on occasion, but I noticed something recently. When my Vibrant was plugged into the OEM charger the back got hot, but when I took it off and put it on the Kyocera charger the back was no longer hot. Does the Vibrant charger use a stronger current, therefore making it hotter than if I use the Kyocera charger? It's a lower end Kyocera that was purchased from MetroPCS. Thank you!!