This is pretty much my experience with 738's. I don't do laptops or high current devices, only iPad/iPod.

The charger is rated at 1 Amp so it is about slightly more than a 100 watt light bulb, not much of draw. If the outlet is good for at least that, it must have been NFG.

Hope it works on the flight home.

Cheers

That is definitely too much and you were simply overloading the outlet.

The nice thing about Delta outlets is that they will self-reset if you unplug and plug back in. I have a Dell laptop with a 90 watt external power supply. If I have the laptop configured for 'high performance', as soon as I plug in, the outlet turns off. If I do the trick a previous poster mentioned and remove the battery so as not to activate the charging circuitry in addition to the laptop's own needs, the outlet stays on. If I first put the laptop in power save mode, then plug the power brick into it, it does not reset the outlet. So I believe the threshold the seat outlets will support is in the 70 to 80 watt range.

I've seen this occur when one outlet was reset by overcurrent and the auto reset mechanism was not working. Unfortunately I caused it myself once before realizing my laptop on high performance mode and with a battery in it that was not fully charged would trigger the outlet to turn off. Then I moved just the brick to the next outlet, got the blue light to indicate I had power, hooked it to my laptop, flipped the second outlet off. I moved back to the first outlet, nothing, finally figured out what was going on due to a thread on here about this issue, moved back to the second outlet again and that one the auto-reset was working so finally I was online.

I believe the same switch that resets the gogo system also switches the outlets on and off; it's just FA misunderstanding that the magic switch seems to fix power problems that makes people think gogo and the power outlets are tied together. The reality is the gogo system is probably fed by the same circuits that the power switch turns off and on so it makes it look like the power outlets and gogo not working are tied together. On a flight with no-issues, power is operational from take off to landing, even on flights where gogo has not worked at all. Typically they fiddle with the switch a few times, turning the outlets and gogo off and on while trying to get it to work.

This ^^. Outlets on all the 764's and 330's auto-reset. I can't say about other planes. Anyway, 120 watts is too much. Maybe on one of the brand new 739's (when they come out).

Sometimes the planes have outlets in the galleys which are more well serviced and have higher amp ratings. You could also try the outlets in the bathroom if you are really in a pinch, but I think they are even more tightly clamped (30w?)

Not to be rude, but anyone truly requiring the use of supplemental oxygen should not be traveling by airplane. Yes, the flight attendants have oxygen available for emergency use, but it is expensive to maintain and is not a passenger convenience item.

I would not count on power outlets on airplanes working, the technology is not consistently available and implemented, and even if the airplane has it, there could be aircraft swaps prior to the flight or it could be MEL'd (documented and repair deferred, as it is not a no-go item).

Did you notify Delta in advance or just assume that this was all going to work out? Honestly I would call them NOW for the return and explain your need. Don't just "assume" it's all going to work. If you are going to need this system or a back up then you need to be more proactive IMHO.

In seat 110V power is 75 watts which translates to 0.6amp.

I use a battery pack for my CPAP when I fly TCON or TPAC.

Passengers using supplemental O2 fly all the time. But they generally make arrangements with the airline in advance so the O2 is avaialble and at thier seat....

Perhaps we should leave the medical advice to the flyer's doctor?

That said I think that the OP needs to contact Delta before thier next flight and not just assume "it will all work out" that's the scary part here. Not the need for O2

The Americans with Disabilities Act would disagree.

I travel (as do many other persons) all the time with a portable O2 concentrator as allowed by the FAA. It runs on batteries which are sufficient for the flight with a 50% margin, again as required and approved by the FAA. My only question was would it work on the power outlets so I could use the batteries while on the ground. Never planned on them as being the only source of power since it may or may not work or even be there. Relying on aircraft power is not permitted by the FAA, hence the need for batteries. If a person needs a Portable O2 Concentrator, you must have your own power source and notify the Airline prior to flight, per FAA Regs.

If as Tentseller says it is limited to 75 Watts, it is insufficient to power the particular Portable Concentrator we typically use.

Thanks to all with factual info about the capacity and capability of the power outlets. BTW, on the trip back, the outlets worked fine, unlike the trip out, but without sufficient current to run to O2 Concentrator. It did charge my iPhone.:D

Cheers

Have plugged in multiple times to find no power. Move my plug to the next outlet and bam, it works. So try around haha!

The key here folks is that you are on an aircraft which has limited ability to provide unlimited 110V (amperage) power to each seat. In my experience, the maximum draw the outlet will allow is 75 to 80 watts (depends on the aircraft). If your device tries to draw more, the outlet automatically shuts down. Dell computers provides two different power converters, one at 130 watts, one at 80 watts, just for this reason.

Perhaps the provider of your equipment provides a power supply that draws 80 watts or less.

I used to have better luck with power working. It seems that most outlets, esp. On the 75X, are dead as of late...