I was going to type “one” but you’re not supposed to mix typing numbers and spelling numbers. Anyhoo, I’ve got a ton of batteries from video equipment that I use on a daily basis. I switch between Canon and Sony cameras quite frequently, so it’s a mess of chargers, etc. If you use a lot of video equipment you might notice that while Canon LP E-6 batteries are quite common, the slots of lights and lots of other things like portable monitors like to use the Sony NP slots. It’s probably because the NP can hold different sizes-larger batteries, etc, and the LPe6 are just one size fits all, and they don’t last all day for everything.

In any case, I decided to make an adapter for Sony to Canon batteries, because I have a ton more canon batteries and they’re convenient. There are some out there, but the ones I saw were expensive and didn’t seem to really be an attractive option. The voltages for the batteries themselves are quite close, so it’s really only a conversion in the physical sense. I had thought about slapping a regulator in between the lines for a 5 volt output, but this was more a proof of concept and not just a full product. I may end up designing a parallel converter to add in more slots for the LPe6s and then you’d get a decent amount of power, but for now, it’s just a proof of concept.

Turns out, it’s not that hard either. I considered designing a custom product, but I found a few templates on thingaverse that were already built. So I simply downloaded those templates, printed them, and then wired them together and then glued them together. And whaddya know? It works.

So the concept works, and I haven’t really timed anything with it yet-I’m sure that the measly 2200mA will only light or power your stuff for a period of minutes, but it works.

I may end up daisy chaining a few units together to form a bigger battery brick, but that’s in the future and you might just go with a completely different setup anyway.