Recharging Laptop From Plane Headphone Jacks? 19
krow asks: "So every flight I get on I wonder, could I partially recharge my laptop off of the headphone outlet? What about using alligator clips to the recharger for the airphone? Anyone else have some creative ideas? How much juice do you think you could pull before tripping a breaker?" Well, this was a fun question for once. I've always wondered the same thing but figured the current/voltage would be insufficient for anything more than a trickle charge, if even that. Anyone have any clues? Or better yet ... anyone have alligator clips for those wacky Airphones?
possible but unlikely (Score:1)
Re:dude... (Score:1)
Well, most - actually all - planes I've been on have not had 120 VAC outlets available for me to use. It could be that I always fly economy...
First class seats probably do have outlets almost all of the time, but people who can afford to fly first class can probably afford an extra battery or two for their laptop.
-mdek.net [mdek.net]
Try a solar panel in the window... (Score:1)
12v car plugs... (Score:1)
As for headphone jacks, I dont think you could get any real power out of those. Usually its a standard 3.5mm stereo headphone jack.
They never show R-rated movies on planes. Dont forget the screen can be seen by everyone, and usually the r-rating is for the video, not audio.
Headphones no, other chargers maybe. (Score:3)
OTOH, if they wired the headphones the cheap and crappy way (in parallel), you can pull a fair bit more power without damaging anything... as long as nobody else is trying the same stunt. YMMV. I wouldn't risk it.
An outlet that's specifically designed for charging other devices might be more practical, but bear in mind that something like an airphone probably has lower power consumption than your computer, and the charger will thus be specced for lower power on charging (no reason to charge it faster than, say, 4x usage power consumption [random figure]).
Lastly, if you have a power converter in your charger (as is likely), you'll probably be producing a lot of RF noise during charging (as most compact power supplies/power converters are switched at high frequency to let you make inductive components smaller).
My advice: Shell out for an extra battery.
Warning, bad pun (Score:3)
-1, groaner. The current moderation system is boring.
non standard headphone jack (Score:1)
Of course it is. (Score:2)
The Bathroom (Score:1)
Airplane Power Jacks (Score:2)
Re:Of course it is. (Score:3)
The specific question is whether you can charge your laptop on something which was not designed for it, and probably something you're going to find in Coach class.
Re:How old are the planes you fly on? (Score:1)
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The Bathroom Quakes (Score:1)
You cheap bastard! (Score:2)
Two batteries will get you across the country on just about any modern laptop.
http://www.superiorlabs.com [superiorlabs.com]
Re:The Bathroom Quakes (Score:1)
Very cute, however...
You know the part in the in-flight safety lecture where they tell you not to use any cellphones or other broadcasting devices? I think that would turn the conversation into something like:
Pilot: "WTF! What's all the static on the air-to-ground loop? Where's my radar? The radio system is crapping out!
Flight Engineer: "Three lavatories have been drawing 9 amps for 15 minutes. Tell the flight attendants to ask lavatories 3, 4, and 6 to quit playing wireless Quake or we'll have to turn off all their power. Oh, and tell the ground control at <destination> to get the police ready to arrest the three guys for reckless endangerment."
Re:The Bathroom Quakes (Score:1)
And it has to be BS - consider - if it were REALLY a problem, they wouldn't let you carry them onboard. Are you REALLY going to risk a plane on the possiblity that some moron doesn't turn off his cell phone and receives a call??????
yes, you can get power in coach (Score:1)
Not if there's a movie... (Score:1)
Unfortunately, anytime I've flown, the flight attendants insist that the windows be closed, to improve the viewing experience for the inflight movie... needless to say, it infuriates me every time.
"...the people who are crazy enough to think they can change the world are the ones who do."
Lessen the need (Score:2)
You could also decrease power usage by removing PCMCIA cards.
Also, if you have the patience, set up a RAM disk and store MP3s there. Then set it up so that the hard disk isn't used so much (look for cron jobs, and see the Battery-Powered HOWTO). Set up APM to power down the disk quickly.