On 14/03/2019 08:44, Andy Bennet wrote:
On 13/03/2019 21:37, newshound wrote:
https://interestingengineering.com/t...ee-fix-in-2019


Hmm, by my calcs to heat a cup (330ml ?) of water through 90C takes 35Wh.
Given a fully charged 18V 4Ah cell that should be good for two cups.
Think I'll stick to my Thermos full of boiling water thanks.

Oops I didn't think to do that sum; good spot!

Mains powered bean-to-cup machines are wonderful, though.