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- 10-11-2003, 04:57 PM #1Jarod (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.
- 10-12-2003, 05:24 AM #2Adam GreatrixGuest
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.
- 10-13-2003, 02:36 AM #3Jarod (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
- 10-13-2003, 03:45 AM #4Adam GreatrixGuest
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
- 10-13-2003, 04:25 AM #5tuned by RÄZOGuest
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
|
|
|
- 10-14-2003, 02:34 AM #6Jarod (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
- 11-11-2003, 07:12 PM #7Mike 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?
- 11-11-2003, 08:45 PM #8Martin CrosbieGuest
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
- 11-11-2003, 09:14 PM #9Group Special MobileGuest
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]...
>>> 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.
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- 11-13-2003, 02:53 AM #10Adam GreatrixGuest
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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