I've had my mini mag (2xAA) for about a year now, and here recently it's been giving me problems. When you turn it on, which is supposed to be high, sometimes it will be very dim, and you have to slap it to make it go bright. sometimes it will flicker and carry on and you have to smack it to fix it. I've taken the head off, and made sure their wasn't nothing inside keeping it from being pushed up when you twist the head to turn it on. and it was clean. i took the battery holder piece off and cleaned it and made sure it was getting good connection and everything is nice and shinny. I'm about to slaps away from slapping it in the trash can! it also does it on low to. sometimes it gets so dim on low, you can't even hardly tell it's on. smack it, and it fixes it, then when you try to walk or move it, it starts again.