are batteries interchangeable between T420s and T430s?

[ljwobker]

I'm reading conflicting reports... anyone know for sure whether the batteries that I have for my T420s (both the 6-cell 'built-in' and the 3-cell ultrabay) will work in a new T430s (both 's' models)...?

I'm upgrading to the T430s and need to know whether I'll have to replace either or both of these spares... (?)

[twistero]

Due to a new "Battery Safeguard" <airquotes> feature </airquotes>, only genuine Lenovo batteries made for the *30 generation will work fully in a *30 machine.
I don't know whether the T420s battery fits physically in a T430s, but if it does, then it will power the machine but will not charge at all.

[ljwobker]

Hmm. All of my T420s batteries are "Lenovo" manufactured... but you're saying that they have to be both "Lenovo" *and* the new/current/secured model?

That sucks. Oh well... ebay here I come I guess... ;-(