Power, what Power?
We made a blast monitor system for mining.
Had a customer in Australia who were desperate to buy one, email them the manual so they can learn to use it in advance, fedex them a unit express etc.
Get a call in the middle of the night. It's not working, won't turn on.
Did you charge it for 24hours like it says in the manual (we can't airfreight charged Li batteries)?
No we just got the delivery and brought it underground.
Do you have the charger - it might work while charging.
No, no power down here - what you are going to do to fix it?
You are 12,000 miles away, a mile underground and no power - exactly what do you expect me to do to "fix it".
But you have to - were blasting in an hour !
I put the phone down - my boss thought it was hilarious