I have currently (not counting RED DOTS) two scope with illuminated reticles. One is a inexpensive Traditions Arms Scope. It was on sale at their site once for $49.00 and I figured it would be fun to play with. Who makes it, I have no idea. It does take a battery and I am still on the first battery. The scope has red hairs that stand out very nice. The strange thing about this cheap scope is, I have it on a muzzle loader. A T/C Black Mountain Magnum with a 1-28 twist. And I have shot some VERY impressive groups out of that rifle using this low end scope. The clarity is very good. Granted its not a high dollar scope. But it holds its own. A lot of fun. One deer season I hunted all day with the rifle. The battery was fairly new. At the end of the day the battery was fine. And being out in the Wisconsin winter, if something was going to drain it, that should have done it. I do carry a spare battery in my possible bag.
My second scope that is illuminated is a Bushnell 3200 Elite with Firefly . This is a 2-7x32mm scope, as I prefer this magnification because of its light gathering ability and just the size of it, over some of the larger scopes. This scope has no battery. That's right .. no battery. All you need is a flashlight to set it. You can hold your hand over the outer bell and shine a flashlight into the eye piece for 30 seconds and it glows a nice neon green for quite a while. I never timed it to be honest. But I always have a small led flashlight on me and another bigger one in my tote bag. So I always have a light. When the evening shadows start to come in, I fire up the lens. The draw back that you do get used to.. the firefly cross hair is thicker them most you are used to. All except for the very center area. That is so it can hold light longer I believe. And I use the fat part of the lens as a aim post for longer distance shooting. It sits on a .451 caliber White Model 97 Whitetail Hunter muzzleloader.
This is what that scoped White will do at 100 yards. This is shooting a 488 grain conical bullet and 80 grains of Triple Seven 2f. The lower group is the result of holding a dead center bull. The upper group is the adjustment. Knowing the drop.
Where I hunt, my shots are close. So I sight in for 50 yards. The rifle does fine holding a dead bull at that distance. The fat cross hair might throw some people off. But once you get used to it. I really see no problem. And the neon green glowing cross hairs are easy to see in fading light.