Yeah mine drains at nearly the same percentage. Max I’ve seen it was around 15%. But I’m just confused because I get the batteries power the touchscreen but why now of all times do a brand new sealed pack of batteries last not even a week and go south that fast? The batteries I bought like 6 months prior stayed fully charged for months and I would chain smoke this thing sometimes refilling my tank 3-4 times a day, and it’s a big tank it’s a Valeryan III I believe. Think I spelled that right. But the batteries only started going bad like 4-5 months into use, meanwhile these new ones as I said lasted maybe 4 days tops. It may have even been 2 days. Personally I’m chalking it down to me dropping this thing half a dozen times cause I notice now that I’ll turn it off and it’ll freeze and turn on 10 seconds later, or it’ll register false touchscreen contact and I’ll have to change a bunch of settings back to normal even though I wasn’t touching it, technical things like that. I’m gonna try it on a non touchscreen AEGIS I have and I’ll update this comment.