Never seen one like that before but Cuttwood don’t make mods, they are a juice manufacturer, the mod looks similar to a limitless to me, so I’d guess it’s just a cuttwood branded sleeve on the mod, there was a cuttwood branded hexohm a few year ago, but it was still made by craving vapour and the battery will go positive up into the mod, also make sure your using a battery with safe amp limit for your build...