In article ,
wrote:
There's a big difference between specifying externals like emission
limits & specifying design-critical elements subject to rapid
technological development like batteries. The latter is an effective way
to stop progress & waste money.

Quite. Look at the way cordless tool batteries have increased in voltage
over the years.

--
*Remember, no-one is listening until you fart.*

Dave Plowman London SW
To e-mail, change noise into sound.