Why wont't it connect? Are the threads working? Can you screw a topper onto the battery?
Is the center pin possibly pushed in and your Spinner is not making a good electrical connection with the charger? It happens sometimes when you over tighten your toppers onto the battery. There's an easy fix for that: grab a tiny screwdriver or even a paper clip and gently wiggle that center pin, from all sides, up. You just need to raise it a hair, until it connects with your charger. Also check the pin on the charger--if you tried too hard to screw your Spinner on, you may have pushed that pin in also.
In the future, be very careful not to over tighten your toppers and chargers onto your batteries.