Car Charger-is Best Buy blowing smoke?

Discussion in 'iPad Accessories for iPAD 1, 2 and 3' started by CMFox, Jun 21, 2010.

  1. CMFox

    CMFox
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    The spouse went off to try and get an Incase ipad Car Charger for my iPad.
    What came home was different then that.

    This is what the Best Buy guy recommended....Will this work? I know nada about volts, amps, watts etc.

    I now have a:
    Cyber Power 2 in 1 Mobile Power Converter: 100 watts - AC outlet w/USB Charger-that converts vehicle power into household power while on the go.($40)(Model # CPS100BU)

    Tech Specs:
    Outlet: 1 AC & 1 USB charger
    Max Power: 100w
    Overload: Protected
    Input Voltage: 10.5-15.V DC
    Output Voltage: 120V AC
    USB Charger: 5V DC

    The BB Guy claims this is better cuz we can charge our phone or ipad or presumably laptop by just plugging the devices own charger into it.

    Question...b4 I pry this thing outta the hard plastic case:
    Is he blowing smoke or did the Spouse score a real win here? (And yeah can I charge iPad while its on..... you know all the usual questions & concerns.)

    Thanks.
    CM
     
  2. Code54

    Code54
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    It will work and you can do more than using a normal car charger. If u have a laptop also it could be a better over all deal. The draw back is you will need your home charger in the car to make it work......
     
  3. Matth3w

    Matth3w
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    I would need to know the output amperage before giving you a good answer. The iPad charger is 2a so anything less would be sub par. I would guess that yes it would work if it is a power converter though.
     
  4. CMFox

    CMFox
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    And one finds out the what the "output amperage" is by calling the manufacturer?

    CM
     
  5. Matth3w

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    Usually it's written on the device somewhere. I. Guessing you'll be ok because it's not just a regular car charger
     
  6. CMFox

    CMFox
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    Looking at it...

    it sez Output 120V ac 60Hz,100W
    is that amperage?

    Essentially it is an inverter. And it offers this warning: "Do not connect battery chargers or adapters with warnings about using with inverters."
    This one has a little fan to keep it cool. Ka-ool.

    Since I have seen no such warnings on my iPad charger, I think I am good to go.

    Electricity is absolutely foreign to me.

    CM

    website for others who are interested in this charger is:
    Uninterruptible Power Supply and Power Protection Manufacturer | CyberPower Systems, Inc.

    and I have NO affliation with this company.
     
  7. mslammers

    mslammers
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    The iPad charger is 10W so with 100W in hand you will have no problem. To actually see what the output is, you will need a watt meter and I don't think you need one.
     
  8. Matth3w

    Matth3w
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    So...

    ? = 100/120

    .83 = Amps

    So it's less than half the power of the iPad charger, which outputs 2a (or 2000ma) if my math/equations are correct.
     
  9. largefarva

    largefarva
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    Your calculation is correct, but the way it applies here, isn't. The .83A is at 120 volts, but the charger puts out 5 volts. If you to use 5 volts in the equation then you'll see that the inverter can handle up to 20 amps at 5 volts. Minus any losses inherent to the inverter and ac adapter.

    The other way to look at is....you're going to need 10 watts to charge the ipad. Without taking into consideration that the charger outputs 5 volts then just plug the 10 watts into that equation at 120 volts and you'll see that the charger will only use .083 of that available .83 amps.

    Long story short...that inverter will be plenty to supply the ipad charger. But if trying to use the USB charger and ipad cable it might only be able output the standard 500ma on the USB port.
     
  10. Matth3w

    Matth3w
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    Oh ok, I was going by his post that it outputs 120v.
     

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