I noticed this yesterday. When I went into the battery usage it told me Maps had eaten 62% of the battery, but it had only been used 1 min 42 sec.
I made sure GPS was off and I had exited out of navigation. I did a full charge and it did it again. I had not even used maps and out the hour I used the phone it had run for 23 seconds but used 42% of the battery usage. Usually disply is the highest followed closely by wifi, phone idle, etc.
What is going on here? After the last two full charges I have not even used Maps, yet it is still showing up as he highest battery drainer.