I hadn't noticed the AC Delco or Eliminator, but I did find it from Xantrex (which I see Amazon's listing now even mentions....kind of like a joint venture or licensing agreement I guess). We use ours primarily when using our RV, but have found that it's easier to use it even around the garage....instead of grabbing a long extension cord....we just carry the Duracell where we want it and plug in the buffer, etc...