Scott Lurndal wrote:

I've got an old radio that needs a B and two A batteries. IIRC
the B is about 45v. Anyone know of a source?

try BatteriesPlus, if there's a store near you, and I assume they're
online. One just opened near me (Huntsville, AL) and they have some
slightly oddball stuff on the shelf, and can order really oddball stuff.
I wouldn't be surprised if they had an A in the store.

I've never seen a B.

-j