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Randall Munroe does his usual excellent job of explaining why a Zippo lighter contains a lot more energy that your smart phone:
Reminds me of many BPL threads.
— Rex
"The hand isn't the fattiest part of the body, but if burned completely, it would probably give off about 500 watt-hours of energy …"
My prediction (not like I studied fuel cells in college or anything, except, well, I did):
The first time most people will recharge their cell phone off a fuel cell is when they plug it into the 12-volt power port of the Honda or Toyota fuel-cell car parked in their driveway. And while a hydrocarbon fuel-cell is the holy grail of fuel cells (what every wants) it is also the holy grail of fuel cells (no one has found it yet*). A gasoline or even propane-powered fuel-cell car would hit it out of the ball-park (infinite range through our existing fuel stations and fuel efficiency 2-3x what combustion engines can possibly do). But I suspect the mass-marketed fuel-cell cars will use hydrogen with all of its downsides because that kind of fuel cell is so easy – we've been shooting them into space for longer than I've been alive.
*yeah, there are hydrocarbon fuel cells but operating at ridiculous temperatures, using really expensive materials, and/or too sensitive and heavy for portable applications.
The fuel cell charger that Randall mentions looks interesting, if they can deliver.
https://www.kickstarter.com/projects/265641170/kraftwerk-highly-innovative-portable-power-plant
Specs:
The empty unit weighs 5.6oz.
1.4oz fuel gives about 10,000 mAh (about 4 iPhone charges).
And you can just take as much fuel if you need.
Your iPhone cannot run on propane because it really runs on smoke.
This is well known.
Cheers
Roger,
You forgot about the mirrors.
Larry
> You forgot about the mirrors.
My bad.
Cheers
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