IVP wrote:

>> I guess that's why they decided that units should be treated like any
>> other noun -- it just makes sense.=20
>=20
> When "volt" is a noun.=20
>=20
> "How many volts ?" - noun
>=20
> "12-volt battery" - adjective. 'battery' is the noun

I'm not really the grammar buff, but isn't the "12-volt" an attributive
noun (but still a noun)? Something like "three-year sentence" or "car
dealer".

This also explains the singular (common for noun adjuncts), differently
from a "battery with a voltage of 12 volts".

Gerhard
--=20
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