A guy I work with gave me a few mods today at work. He dropped them off at my desk when I wasn't there. One of them I know is a DNA 250. I believe it's a Hexohm mod but not sure. I won't be back at work to ask him what it is and he'll be on vacation when I get back. It looks to be an internal battery. I'm hoping I can identify it so I can find maybe a user manual or some specs as to the battery. Here's some pics, any help would be greatly appreciated.