What's the best 120VAC wall outlet with two full power USB ports ofat least 20 Watts?

Discussion in 'iPhone' started by Danny D., Jan 7, 2015.

  1. Danny D.

    Danny D. Guest

    I want to help out a neighbor who knows nothing about electricity
    by replacing a handful of wall outlets with those that have two
    (full power) USB ports.

    By full power, I mean BOTH PORTS simultaneously can charge with
    at least 2.1 amps (for a total power output of at least 20 Watts).

    http://www.enerlites.com/61501-tr2usb.html

    Here's the best "USB Receptacle" I can find for charging two
    2.1 Amp iPads simultaneously:
    - Enerlites 61501-TR2USB (4.0A combined, for a total of 20 Watts)
    http://www.enerlites.com/61501-tr2usb.html

    Here's the second best I can find:
    - Leviton T5632 (3.6A combined, for a total of 18 Watts)
    http://www.leviton.com/OA_HTML/ProductDetail.jsp?partnumber=T5632-W&section=63676

    Here's a typical one, which is sub optimal:
    - Hubbell Wiring Systems USB15X2W (3A combined, for a total of 15 Watts)
    https://www.codale.com/index.jsp?path=product&part=3459565

    Do you know of a more powerful USB Recepticle other than the Enerlites
    above, that can charge two 2.1 Amp iPads simultaneously?
     
    Danny D., Jan 7, 2015
    #1
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  2. Danny D.

    Rod Speed Guest

    You also need to consider which ones are well
    enough designed so they won't destroy what
    you are charging if they fail. Hard to quantify tho.
     
    Rod Speed, Jan 7, 2015
    #2
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  3. Danny D.

    Danny D. Guest

    Rod Speed wrote, on Thu, 08 Jan 2015 08:09:04 +1100:
    What does that mean?

    Current is different than voltage.
    The voltage is regulated at 5VDC.
    Too much voltage will destroy things.

    But you can't source too much current.
    The more current you can source, the better.
     
    Danny D., Jan 7, 2015
    #3
  4. Danny D.

    Rod Speed Guest

    Some can fail catastrophically and put full
    mains voltage on whatever you are charging.
    And does when the electronics in the
    socket fails and delivers full mains
    voltage to the device plugged into USB.
    Sure, that isnt the problem with badly designed sockets.
     
    Rod Speed, Jan 7, 2015
    #4
  5. Danny D.

    Danny D. Guest

    Rod Speed wrote, on Thu, 08 Jan 2015 10:05:41 +1100:
    But that can happen with ANY USB charger.

    To be more specific on the question, since the spec on two ipads
    would be to source about 2.1 Amps x 2 which is 4.2 Amps of current
    (aka 21 Watts) of power, is there a MORE POWERFUL dual-USB wall
    outlet receptacle than the best one I found, so far?

    http://www.enerlites.com/61501-tr2usb.html
     
    Danny D., Jan 7, 2015
    #5
  6. Danny D.

    Rod Speed Guest

    Nope, its perfectly possible to design a
    charger so that no failure will ever deliver
    full mains voltage to the device its charging.

    Have a look at the teardowns of chargers on youtube sometime.
    You need both that AND one that can't deliver
    full mains voltage to the device if it fails.
     
    Rod Speed, Jan 8, 2015
    #6
  7. Danny D.

    Guest Guest

    theoretically yes, but quality chargers have protection so that it is
    highly unlikely to happen. cheap chargers skimp on the protection and
    everything works out ok. often it does but sometimes it doesn't.

    in other words, don't buy noname crap.
    there is no point for more power, as nothing will sink it.

    for wall outlets with usb ports, the thing to look for is if the usb
    ports are always on or if it can detect if there's a device plugged
    into it and if not, disable the usb port and not waste electricity.
     
    Guest, Jan 8, 2015
    #7
  8. Danny D.

    Rod Speed Guest

    Impossible, actually.
    Or don't have any protection at all.
    Presumably you left out a 'hope' after the and.
    It aint just the name that matters.
    Wrong, as always.
    There is no wasted electricity with a proper switch mode design.

    You only get that effect with transformer based systems.
     
    Rod Speed, Jan 8, 2015
    #8
  9. Danny D.

    Danny D. Guest

    nospam wrote, on Wed, 07 Jan 2015 22:42:57 -0500:
    I think they're all UL approved.
    That's sort of like saying there's no point in buying a motorcycle
    with more than 100 BHP at the rear wheel because you don't need it.
    I think all the ones I found were always on, although I agree it's
    a great idea if they only activate the circuitry when they're being used.
     
    Danny D., Jan 8, 2015
    #9
  10. eR.............cross-circuit to Panel A?
     
    Col. Edmund Burke, Jan 8, 2015
    #10
  11. Danny D.

    Zak W Guest

    UnFuckingBelievable.
     
    Zak W, Jan 8, 2015
    #11
  12. Danny D.

    Guest Guest

    definitely not impossible. even the best chargers can have component
    failures and damage a device. nothing is perfect.
    in other words, skimp.
    looks like i did.
    no, but it's an easy way to determine quality other than buy it and
    take it apart. name brands don't normally risk making crap.
    nope.
     
    Guest, Jan 8, 2015
    #12
  13. Danny D.

    Guest Guest

    that helps.
    not a good analogy.

    what devices sink more than 10-12w? unless you can find one *and* plan
    on buying it, then it doesn't matter if the outlet can source more.
    there's at least one that autosenses but i don't remember who makes it.
    i met the guy who designed it a few years ago at a conference.
     
    Guest, Jan 8, 2015
    #13
  14. Danny D.

    Rod Speed Guest

    Wrong, as always.
    Yes, but the whole point of the best designs
    is that whatever fails DOES NOT PRODUCE
    FULL MAINS VOLTAGE ON THE USB.

    Trivially easy to do in fact tho it does
    cost more to do that than to not bother.
    Yes, but what matters is designing
    it so that whatever fails can never
    see full mains voltage on the USB.
    Wrong, as always. Skimp means
    less protection, not none at all.
    Like hell it is when its so easy to use any name they like.
    But can't stop others using their name. Ask Apple about that with chargers.
    Yep. There may be nothing that currently does. Doesn't mean
    that something won't in the future and it would be stupid to
    have to replace all you sockets when one of those shows up.
    Yep. You don't have a fucking about the basics. Trivially easy
    to measure the power consumption with switch mode designs.
     
    Rod Speed, Jan 8, 2015
    #14
  15. Danny D.

    Rod Speed Guest

    Only if it actually is UL approved and doesn't
    just claim that it is when in fact it isnt.

    Plenty of the fake Apple chargers claim to be and it's a lie.
    Wrong, as always. It makes no sense to buy just what you currently
    need and have to replace all the sockets when you buy something
    that takes more current than what you currently have.
    But don't understand the basics, as always.
     
    Rod Speed, Jan 8, 2015
    #15
  16. Danny D.

    Guest Guest

    that's why sticking to name brands is important. a name brand will not
    lie about ul approval.

    with noname crap, you never know what you'll get. even the power rating
    can be bogus (and often is).
     
    Guest, Jan 8, 2015
    #16
  17. Danny D.

    Frank Guest

    I ask: Will USB ports be de rigueur 30 years from now?
    Plug ins are cheap. I'd prefer to use them.
     
    Frank, Jan 8, 2015
    #17
  18. Danny D.

    Rod Speed Guest

    But there is no way to determine if it actually is a name
    brand or just someone lying about the brand, a fake.

    With a microscopic subset like Apple, you can
    only ever by stuff from an Apple place of worship,
    but plenty of us don't even have that option and
    it isnt available with most stuff anyway.
    But plenty lie about the brand name.
    And with something like the power outlets he is talking
    about its easy enough to buy just one of what looks like
    a branded product, with a UL rating and check that it
    does deliver what it claims to and break it open and
    check that its not a fake too. Not a shred of rocket
    science required at all. But you do need to know
    more about the basics than you do.
     
    Rod Speed, Jan 8, 2015
    #18
  19. Danny D.

    Danny D. Guest

    nospam wrote, on Thu, 08 Jan 2015 11:12:44 -0500:
    The quest is for two 2.1 Amp ports, which will handle two
    iPads at the same time.

    I can only find one UL-approved receptacle that does that.
    I was just hoping that there would be more out there than
    the one I found.

    Sorry if that wasn't clear.
     
    Danny D., Jan 8, 2015
    #19
  20. Danny D.

    Danny D. Guest

    Rod Speed wrote, on Fri, 09 Jan 2015 05:11:32 +1100:
    I don't claim to be an expert on anything, but, I doubt
    there is a real danger of fake 120VAC receptacles being
    sold by reputable firms (as the ones I outlined were), and
    then being put in homes all across the USA every day by
    electricians and homeowners alike.

    Sure, I know about the made-up scare by Apple regarding
    the fake chargers - and I know all about the Apple audience
    eating it up like hotcakes.

    IMHO, that fake Apple charger issue was purposefully blown
    vastly out of proportion, by Apple Marketing (which is the best
    there is, after BMW Marketing) after the death of that Asian
    lady using the phone in China with a white charger block.

    Even if fake white charger blocks were a real threat,
    to imply that the worldwide market for fake white charger blocks
    is even remotely similar to the USA-only market for 120VAC wall
    outlets, is preposterous (and barely worth the text required
    to dispute).

    To summarize, I highly doubt fake UL-approved USA receptacles
    is a real problem. It's a great made-up scare-tactic problem,
    which probably works great on Apple customers, but I'd personally
    worry more about falling down the stairs while reading text on
    my iPhone than I would about fake UL-approved wall outlets.
     
    Danny D., Jan 8, 2015
    #20
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