@narzix there's a battery usage app in the store.

I have no problems with developer mode when using wifi. My average idle usage is 6mA on wifi with developer mode and im turned on. Now I'm not sure what the culprit is, but I do know that my idle usage jumps upwards of 60 to over 100mA once I switch to 3g. Very irritating especially when the battery usage app doesn't show a large increase in activity for mobile networks.