i had some problems with mine. the power wires were soldered backwards but they fixed it. i also had vibration problems making parts loose so i coated the wires with liquid electrical tape. i modded mine even further by drilling 2 small holes in the bottom to run a piece of small diameter rope cord to hold the battery to the inside of the case so it wasnt floating around. i also had a problem with the alligator clips vibrating off the battery terminals after a couple days so i would add some tape. i even added an eyebolt to the bottom of the can so i could run a cable to lock it up. just strip the threads with a pair of pliers after the nut is tightened so it cant be taken apart. all in all ive had 2 of the cheap moultries and other than one getting stolen worked as advertized.