Not all Olights require a special battery. I own an S10RII and it uses a standard 16340, but I know what you mean, as I also own an H1R Nova and it does take a special 16340. Basically what Olight is doing is moving the negative terminal of the battery closer to the positive to make connection easier. To be fair, I’ve never taken a good look at my S10, but they must have to run a special lead from the positive terminal of the battery down to the charging base.