Handy to have - ATN Extended Power Battery Kit

I bought this with my scope and glad I did. I was able to hunt all day without shutting down my scope or have to worry about the batteries dying. The cartridge holder on the outside is velcro so it can be removed and there is another one inside of the case too which I thought was great. It doesn't fit the collapsible stock of an ar15 the greatest. It was sloppy and I didn't like it so I tried it on the handguard and it fit great. Puts the cord closer to the scope so it don't go across the action and being left handed the battery would stick out too far.