CF-AA1653A by preference. I have enough of the little ones for my CF-19's. (3.85A?)I'm running 5 of the AA1653A in the shop and house right now. Oops one is a 1683 (8A).
How this relates to IBM...I don't know but if I get any IBM's they will be over 4A.
Mostly I use what I have if it has a yellow tip.
