Not an iPhone user here, but there are solutions to that problem:
Mophie iPhone External battery
Not an iPhone user here, but there are solutions to that problem:
Mophie iPhone External battery
I know there are third party solutions to many of the problems I outlined. However, that is insane asking your customers to buy MORE devices to do the job that your device at $600 should have done.
None of this is rocket science. Any business traveller worth his/her salt carries spare batteries for his/her cellphone or smartphone. This is predictable and commonplace behavior.
To cock a nook at the needs of people so that you can have a “sexy” design is the ultimate definition of an elitist
See my post 18 for a way-cheaper alternative.
And there are many different makers of similar products.