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  1. #1
    Jarod (the puppy)
    Guest
    Well kind of.


    I have a 6310i.

    I also have an "NEC - FIDO" mobile.

    I have a car charger for the NEC.

    Wondering if it would work on the Nokia?


    Anyone ever tried?


    --
    ========
    Thanks.....

    Jarod





    See More: 6310i - car charger question.




  2. #2
    Adam Greatrix
    Guest

    Re: 6310i - car charger question.

    "Jarod (the puppy)" <[email protected]> wrote in message
    news:[email protected]
    > I have a car charger for the NEC.
    > Wondering if it would work on the Nokia?


    This will depend what voltage, current, polarity the charger gives out. Also
    the charger will have to physically fit your Nokia. Some chargers will just
    pass the 12V straight through to the phone. This will almost certainly
    damage your Nokia if your charger does this. Nokia phones require a charging
    voltage of 5.7V (give or take 0.5V) and at no more current than 1A. If you
    measure the voltage coming off a charger (either mains or 12V) it will be
    somewhat higher than this. This is because it drops down to around 5.7V when
    under load.

    Unfortunately most car chargers don't say what voltage they give out, but
    you may be able to look at your mains charger for your NEC and see if it
    gives out the same voltage (5.7V, anything between 5.5V and 6V will be
    fine). My Nokia charger says it can give out up to 800mA, although I would
    be surprised if it ever drew more than 200mA.

    First of all try plugging it in with the charger disconnected to see if it
    will actually fit in the first place otherwise all this is a moot point.
    Then, if it does, you'll need to put a meter across the charging plug and
    check that the polarity is correct (centre positive). If the voltage is
    staying between 5.7V and around 9V you could then try putting a loading
    resistor across it (about 30ohm to give an average load at 5.8V) and check
    the voltage is between 5.5V and 6V. If all of these come out ok you can use
    it to charge your Nokia.

    Or you can pick up a car charger for as little as £5 from most phone shops

    Adam.





  3. #3
    Jarod (the puppy)
    Guest

    Re: 6310i - car charger question.

    "AG" =3D=3D "Adam Greatrix" writes:

    AG> First of all try plugging it in with the charger disconnected to
    AG> see if it will actually fit in the first place otherwise all this
    AG> is a moot point.

    Very true.

    Although OBVIOUS I have only quickly eyeballed them, and noticed that
    the Nokia charger looks the same as NEC's.

    (This is in comparison to the Siemens and Ericson ones I have seen)

    AG> Then, if it does, you'll need to put a meter across the charging
    AG> plug and check that the polarity is correct (centre positive). If
    AG> the voltage is staying between 5.7V and around 9V you could then
    AG> try putting a loading resistor across it (about 30ohm to give an
    AG> average load at 5.8V) and check the voltage is between 5.5V and
    AG> 6V. If all of these come out ok you can use it to charge your
    AG> Nokia.

    The NEC battery is a "standard" 4 x NiCad's so that would be 4.8
    volts.


    AG> Or you can pick up a car charger for as little as =A35 from most
    AG> phone shops

    True.


    Do you have a car charger yourself?

    The NEC one has an LED which is 3 colours. Green, orange and red.

    Orange is "charging"
    Green is "Charged"
    Red is "not connected"

    (maybe red/green are swapped in function)




    --
    =3D=3D=3D=3D=3D=3D=3D=3D
    Thanks.....

    Jarod





  4. #4
    Adam Greatrix
    Guest

    Re: 6310i - car charger question.

    "Jarod (the puppy)" <[email protected]> wrote in message
    news:[email protected]
    AG> Then, if it does, you'll need to put a meter across the charging
    AG> plug and check that the polarity is correct (centre positive). If
    AG> the voltage is staying between 5.7V and around 9V you could then
    AG> try putting a loading resistor across it (about 30ohm to give an
    AG> average load at 5.8V) and check the voltage is between 5.5V and
    AG> 6V. If all of these come out ok you can use it to charge your
    AG> Nokia.

    > The NEC battery is a "standard" 4 x NiCad's so that would be 4.8
    > volts.


    I meant the voltage across the charger, not across the battery. Just because
    your battery is 4.8V doesn't mean that your charger won't be a completely
    different voltage. The charging circuit in the phone may also change the
    charger's voltage. I just know that Nokia Chargers give out 5.7 or 5.8V.

    > Do you have a car charger yourself?


    I have a normal charger, a car charger, and a car kit.

    > The NEC one has an LED which is 3 colours. Green, orange and red.


    My car charger has a green LED to say it's plugged in - nothing else. But
    then it isn't a Nokia one, it's a third party one that's compatible with
    Nokia phones.

    Adam

    --
    ========
    Thanks.....

    Jarod






  5. #5
    tuned by RÄZO
    Guest

    Re: 6310i - car charger question.

    "Adam Greatrix" <[email protected]> wrote in message
    news:[email protected]
    | "Jarod (the puppy)" <[email protected]> wrote in message
    | news:[email protected]
    | AG> Then, if it does, you'll need to put a meter across the charging
    | AG> plug and check that the polarity is correct (centre positive). If
    | AG> the voltage is staying between 5.7V and around 9V you could then
    | AG> try putting a loading resistor across it (about 30ohm to give an
    | AG> average load at 5.8V) and check the voltage is between 5.5V and
    | AG> 6V. If all of these come out ok you can use it to charge your
    | AG> Nokia.
    |
    | > The NEC battery is a "standard" 4 x NiCad's so that would be 4.8
    | > volts.
    |
    | I meant the voltage across the charger, not across the battery. Just
    because
    | your battery is 4.8V doesn't mean that your charger won't be a completely
    | different voltage. The charging circuit in the phone may also change the
    | charger's voltage. I just know that Nokia Chargers give out 5.7 or 5.8V.
    ***nk car chargers will give out 5.7V, but the ACP-7 gives out 3.7V/355mA


    | > Do you have a car charger yourself?
    |
    | I have a normal charger, a car charger, and a car kit.
    |
    | > The NEC one has an LED which is 3 colours. Green, orange and red.
    |
    | My car charger has a green LED to say it's plugged in - nothing else. But
    | then it isn't a Nokia one, it's a third party one that's compatible with
    | Nokia phones.
    |
    ***Me too. 3rd party car chargers' dont work well with desktop chargers,
    they dont fit. I found out when i was testing a new desktop charger using
    the car charger as power source.

    | Adam
    |
    | --
    | ========
    | Thanks.....
    |
    | Jarod
    |
    |
    |





  6. #6
    Jarod (the puppy)
    Guest

    Re: 6310i - car charger question.

    "AG" == "Adam Greatrix" writes:

    AG> I meant the voltage across the charger, not across the battery.
    AG> Just because your battery is 4.8V doesn't mean that your charger
    AG> won't be a completely different voltage. The charging circuit in
    AG> the phone may also change the charger's voltage. I just know that
    AG> Nokia Chargers give out 5.7 or 5.8V.

    Ok. Sorry. I guess it is just something I am going to have to look
    at/measure.

    Thanks though.


    --
    ========
    Thanks.....

    Jarod





  7. #7
    Mike S.
    Guest

    Re: 6310i - car charger question.


    In article <[email protected]>,
    Adam Greatrix <[email protected]> wrote:
    >"Jarod (the puppy)" <[email protected]> wrote in message
    >news:[email protected]
    >> I have a car charger for the NEC.
    >> Wondering if it would work on the Nokia?

    >
    >This will depend what voltage, current, polarity the charger gives out. Also
    >the charger will have to physically fit your Nokia. Some chargers will just
    >pass the 12V straight through to the phone. This will almost certainly
    >damage your Nokia if your charger does this. Nokia phones require a charging
    >voltage of 5.7V (give or take 0.5V) and at no more current than 1A. If you
    >measure the voltage coming off a charger (either mains or 12V) it will be
    >somewhat higher than this. This is because it drops down to around 5.7V when
    >under load.


    The ACP-7U, which is provided as standard equipment on many new Nokia
    phones, is spec'ed for 3.7V at 340 mA. If Nokia phones require 5.7V how can
    this standard equipment charger do the job?







  8. #8
    Martin Crosbie
    Guest

    Re: 6310i - car charger question.


    "Mike S." <[email protected]> wrote in message
    news:[email protected]
    >
    > In article <[email protected]>,
    > Adam Greatrix <[email protected]> wrote:
    > >"Jarod (the puppy)" <[email protected]> wrote in message
    > >news:[email protected]
    > >> I have a car charger for the NEC.
    > >> Wondering if it would work on the Nokia?

    > >
    > >This will depend what voltage, current, polarity the charger gives out.

    Also
    > >the charger will have to physically fit your Nokia. Some chargers will

    just
    > >pass the 12V straight through to the phone. This will almost certainly
    > >damage your Nokia if your charger does this. Nokia phones require a

    charging
    > >voltage of 5.7V (give or take 0.5V) and at no more current than 1A. If

    you
    > >measure the voltage coming off a charger (either mains or 12V) it will be
    > >somewhat higher than this. This is because it drops down to around 5.7V

    when
    > >under load.

    >
    > The ACP-7U, which is provided as standard equipment on many new Nokia
    > phones, is spec'ed for 3.7V at 340 mA. If Nokia phones require 5.7V how

    can
    > this standard equipment charger do the job?


    AFAIK, varying the charging voltage / current, can alter the charging time,
    and/or the maximum charge. 3.7V will charge a bit slower, which is
    reasonable, since the ACP-7 is the slowest charger around.

    Martin Crosbie





  9. #9
    Group Special Mobile
    Guest

    Re: 6310i - car charger question.

    On Wed, 12 Nov 2003 01:12:35 +0000 (UTC), [email protected] (Mike S.)
    wrote:

    >
    >In article <[email protected]>,
    >Adam Greatrix <[email protected]> wrote:
    >>"Jarod (the puppy)" <[email protected]> wrote in message
    >>news:[email protected]rg.au...
    >>> I have a car charger for the NEC.
    >>> Wondering if it would work on the Nokia?

    >>
    >>This will depend what voltage, current, polarity the charger gives out. Also
    >>the charger will have to physically fit your Nokia. Some chargers will just
    >>pass the 12V straight through to the phone. This will almost certainly
    >>damage your Nokia if your charger does this. Nokia phones require a charging
    >>voltage of 5.7V (give or take 0.5V) and at no more current than 1A. If you
    >>measure the voltage coming off a charger (either mains or 12V) it will be
    >>somewhat higher than this. This is because it drops down to around 5.7V when
    >>under load.

    >
    >The ACP-7U, which is provided as standard equipment on many new Nokia
    >phones, is spec'ed for 3.7V at 340 mA. If Nokia phones require 5.7V how can
    >this standard equipment charger do the job?


    The standard charger works except it takes a good deal longer to
    charge fully. The ACP-7U will work with pretty much all Nokia models.
    Other chargers such as the ACP12U takes only a bit over an hour to
    fully charge whereas the ACP-7U can take up to four hours to fully
    charge. The ACP12U is also rated 100-240 V. and the ACP-7U is rated
    either 115V or 230V but is not interchangeable i.e. you have to use it
    on one voltage or the other as appropriate.
    - - - - - - - - - - - - - - - - - - - - - - - - - -
    To send an email reply send to
    GSMthemobilestandard ( yahoo.com



  10. #10
    Adam Greatrix
    Guest

    Re: 6310i - car charger question.

    "Martin Crosbie" <[email protected]> wrote in message
    news:[email protected]
    > AFAIK, varying the charging voltage / current, can alter the charging

    time,
    > and/or the maximum charge. 3.7V will charge a bit slower, which is
    > reasonable, since the ACP-7 is the slowest charger around.


    That's not it at all. You need a voltage higher than the recharging
    activation voltage for the battery you're recharging. This is typically
    close to the voltage the battery is meant to give out, frequently higher,
    but can be slightly lower as well. So long as you have this voltage you then
    need some current to charge the battery. The amount of energy the battery
    stores is proportionally to the amount of energy you put into it. Energy (in
    Electrical terms, Watts) is equal to Volts multiplied my the Amps. So, on a
    ACP7 this is around 1.3W, ACP8 around 2.7W, ACP12 around 4.6W.

    The time it takes to charge a battery depends on much energy is already
    stored in it (i.e. how full it is already), the capacity of the battery, the
    amount of charging energy applied and the temperature.

    Their are many reasons why Nokia may have increased the voltage from 3.7V to
    5.7V. These include the fact that the battery voltages have changed and most
    batteries are now Li-Ion/Pol rather than NiMH or NiCd, but also that the
    amount of heat given off by an electrical circuit is proportional to the
    amount of current going through it. This is one of the reasons the national
    grid use several hundred thousand volts and then drop it down to 240V at
    substations for UK houses. For the same energy, the higher the Voltage the
    lower the Amps, and it's the Amps that determine how hot the wire gets. Not
    only would the cables melt if they used 240V for distribution, but they
    would waste most of the energy in lost heat. The same principle applies to
    charging your Nokia. If the ACP12 was 3.7V it would have to deliver 1.3Amps
    to charge at the same rate. This may require all the cables, connectors, and
    circuits in the charging circuit to be double the size to handle the extra
    current (or they melt).

    The ACP7, 8 and 12 *WERE* listed as compatible with my old 7110. So, at
    least on some phones, you can use any of the chargers. However, the ACP7 is
    no longer listed on Nokia's site and is no longer for sale on the few online
    shops I knew used to sell them. Perhaps this charger (which has been around
    for many years now) is no longer made?

    Adam





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