What is this transformer?

I have a transformer with these markings on it. 430-2003.01 LEI-9820 What is this capable of. I am looking to use it for a battery charger, but I am not sure if It will be capable of the Amps and volts I am trying to acheive. At 110vac what should the output be? It has a smaller white and black wires and on the other side much larger pair of yellows and purples. Can I run it in series to get higher voltages?

Post a picture of it.

Where did you found it? In a radio? How big is it?

Doesn't find it on google.

https://www.cardomain.com/ride/2327820/4

this I pulled out of a battery backup, I am sure it will charge a 12v but with 4 wires on the low volt side can it be made to do 24v?

Last two pictures on that page, I assume.

Can't say how much voltage output is just to look at the picture.

Looks like about 10-15VA 50/60Hz transformer. Stick low voltage AC, 6V say, into black amd white and measure outputs on other windings. This will identify which is Primary and Secondary and ratio. Post your results?
Mike