it is true that Jeep put steelies under the MTs, but I've seen plenty of guys overload their MJs over the years and haven't yet heard of someone hurting their alloys.
what I'm saying is that our trucks rot from the inside-out. especially northern rigs. I bed-lined my rockers many moons ago and the steel behind the plastic is literally gone now. rotted away to dust. the plastic is still there though. just don't touch it and you might never know.
it has to do with the way your camera saves the orientation of the image. it was once explained to me and all I can remember is... it's complicated. I find I have decent luck rotating the image, rotating it back, re-saving, and then uploading.
my buddy bought the cheapest one he could find and that (plus disconnecting the battery) has meant it was ready to go months later. even a low output one should be able to overcome the battery's natural drain rate.