discovery 2200
i own [2] the discovery 1100 and 2200 and never had problems with fhe batterys i'v gotten plenty of days use around 30 plus hours. to be truthful i love my 1100 it's better then my 2200.i fine the 1100 much easer to use and its just about the same as the 2200. try and clean the battery pins in your houseing or you mite have a little play between the battery cover and the battery pins, take the battery cover off fold some paper up and lay it across the back of the batterys and put the cover back on it should have a tighter fit,giving it a better contack
I have an Elite 2200 which is basically the same as the Discovery unit. I love the fact that it only weighs 2.7lbs and swings great. I usually notch out the first 4-5 segments when doing parks, and usually don't find anything but quarters. I like the sound frequencies for the different metals, and if it squeaks a dime or a quarter, you can be sure it is that target. Depth is not as accurate but a probe definitely helps in the dig.
I hunted with the 2200 for a couple of years and found lots of good stuff. I still have it and occasionally take it out for a spin. The nothching feature is nice and with practice pinpointing is fairly easy. When you have a target back up a little til there is no sound and slowly inch toward the target. You'll find with practice you will be dead on. The main thing with this, or any other detector is experience. I upgraded to a target id machine with a few more bells and whistles but owe my roots to the 2200.
The down side I found with this machine is it loves batteries. I probably get 8 to 10 hrs on high quality 9v and less on the bargain brands. Also the depth is limited to about 6 inches on a quarter sized target.
From my experience with the different frequencies it appears the higher frequecies detect smaller targets. They could also be a little deeper but I'm just speaking on actual experience and not technical know how.
Pops



Thanks Pops, know what you mean about the batteries. But mine doesnt even last that long. I think cold weather plays a part as well. I think i'll try some rechargeables and see if I have any better luck. Happy Hunting!!