Name this battery connector

[jburner]

I have this battery pigtail hooked up to my battery and would like to find the charger for it. I assume it’s some sort of battery maintainer. Anyone seen this style before? If so, what brand, model is it?

 

[dduelin]

That appears to be a coaxial connector common to heated clothing wiring harnesses. It could be used for a battery maintainer if the connector male end was grafted to the maintainer wiring but I don't think it indicates a specific brand of maintainer.

 

[CamaroEric]

My guess is that it will be easier to get a regular charger / battery tender with the standard SAE power plug (much more common) and get an adapter from Amazon.
Search "SAE to coaxial" on google. Always make sure your polarity is correct!