So I have been hunting with the trail XP50 and really like it. It’s got great clarity and has been problem free. I use the helion xp50 for a scanner and really like the rainbow color pallet as I find it easy on the eyes and that dogs show really well, not that they are bad in white hot or black hot on the trail. But thinking about selling the trail and picking up the thermion primarily for that reason. One thing that concerns me about the thermion is an internal battery. If it goes bad, it seems like a much bigger issue than a bad battery with the trail models. Any thoughts on this? I know they are fairly new, but is anyone aware of internal batteries going bad?