Electric Bikes - Ever heard of a MASTER EBIKE ?

Hi. I bought a MASTER EBIKE at an auction. The only identification I can find on it is "MASTER EBIKE....MADE IN CHINA." I need a charger for it, but do not know where to find parts for this ebike. I am attaching a picture so maybe someone may recognize it and know where to buy parts for it or where they sell this ebike in the USA. It has a built in battery pack that detaches from the bike with use of the key.
If anyone knows anything at all about this bike I would appreciate any help you can give. I have lots of other pix I can send if anyone is interested. Thank you for your help. Sincerely, Charlie.

Easiest thing might be to figure out what the battery chemistry and voltage are and just find a charger that fits those specifications.

I'm guessing it's sealed lead acid, 36V or 48V.

Easiest thing might be to figure out what the battery chemistry and voltage are and just find a charger that fits those specifications.

I'm guessing it's sealed lead acid, 36V or 48V.

What he said - further, if that last pic is the charge connector in the upper left I don't see any sense wire connection so most likely SLA. Swingarm, hub motor? Let us know how it rides if/when you get it going.

Hi Broadway.....it is a hub motor in the rear that powers it.....i hope it works....i paid $100. bucks at an auction for it......WHAT DOES SLA mean? There is a little connector in upper left that actually looks like an RCA video connector....is this a connector for the charger?

SLA= sealed lead acid.