I was always happy with Nokias as they had the same charger for all phones.
Anyway, of course, they changed this to a thinner plug, but the chargers
were interchangeable with a small adapter. These are known in our house as
the 'fat' and 'thin' chargers
Anyway, now I have a 6500c, which has a different charger which goes into
the usb 'hole'.
Mrs B has a phone that uses a 'thin' charger. We are going away next week
and want to only take one charger, so I bought an adapter to convert a 'fat'
to go into my 6500c and then we can use another adapter (fat to thin) to
charge Mrs B's phone.
I thought I'd try it before we go and my 6500c is getting warm whilst
charging.
Further investigation reveals my new charger is 5v whereas the old fat one
is 3.7v
Will charging my 6500c with a 3.7v and it getting warm be of detriment???
"J B" <jb@invalid.com> wrote in message
news:782duhF1im66bU1@mid.individual.net...
>
> Will charging my 6500c with a 3.7v and it getting warm be of detriment???
> --
> J B
Yes it will knacker your battery and could knacker the phone as well......
Keep to the specified voltage when charging.
"John" <123@321.00> wrote in message
news:gvh5kd$afi$1@news.eternal-september.org...
>
> Yes it will knacker your battery and could knacker the phone as well......
> Keep to the specified voltage when charging.
So, did Nokia make 5v chargers with a fat plug?
Just been in the loft and I ain't got one!!
The message <782mi7F1j2np7U1@mid.individual.net>
from "J B" <jb@invalid.com> contains these words:
> "John" <123@321.00> wrote in message
> news:gvh5kd$afi$1@news.eternal-september.org...
> >
> > Yes it will knacker your battery and could knacker the phone as well......
> > Keep to the specified voltage when charging.
> So, did Nokia make 5v chargers with a fat plug?
> Just been in the loft and I ain't got one!!
J B wrote:
> "John" <123@321.00> wrote in message
> news:gvh5kd$afi$1@news.eternal-september.org...
>>
>> Yes it will knacker your battery and could knacker the phone as
>> well......
>> Keep to the specified voltage when charging.
>
> So, did Nokia make 5v chargers with a fat plug?
> Just been in the loft and I ain't got one!!
USB is 5v - so therefore to be able to charge from USB requires the
phone to need 5v input. Consequently, the chargers for the phones were
5v chargers.
I don't think that Nokia used 5v chargers on devices which didn't have a
USB port.
"Helen Deborah Vecht" <helenvecht@zetnet.co.uk> wrote in message
news:31303030373639354A1C464B52@zetnet.co.uk...
>
> My fat-plugged Nokia charger is 3.7V.
Yes, mine too ........... that's what I said previously!! :-)
"John" <123@321.00> wrote in message
news:gvh5kd$afi$1@news.eternal-september.org...
>
> "J B" <jb@invalid.com> wrote in message
> news:782duhF1im66bU1@mid.individual.net...
>>
>> Will charging my 6500c with a 3.7v and it getting warm be of detriment???
>> J B
>
> Yes it will knacker your battery and could knacker the phone as well......
> Keep to the specified voltage when charging.
> Regards
>
>
Cobblers, both the phone and Li-ion Batteries have voltage and current
regulators
You would have to put well over 9 volts into a phone like a Nokia
before you could overwhelm the regulators
On Tue, 26 May 2009 19:21:47 UTC, David Hearn
<dave@NOswampieSPAM.org.uk> wrote:
> J B wrote:
> > "John" <123@321.00> wrote in message
> > news:gvh5kd$afi$1@news.eternal-september.org...
> >>
> >> Yes it will knacker your battery and could knacker the phone as
> >> well......
> >> Keep to the specified voltage when charging.
> >
> > So, did Nokia make 5v chargers with a fat plug?
> > Just been in the loft and I ain't got one!!
>
> USB is 5v - so therefore to be able to charge from USB requires the
> phone to need 5v input. Consequently, the chargers for the phones were
> 5v chargers.
Easy enough to put a regulator into the cable...in fact I have such a
cable and frequently charge my new-ish Nokia from the USB port on my
monitor...!
"Steve Terry" <gFOURwwk@tesco.net> wrote in message
news:gvhgoo$6ka$1@news.albasani.net...
>>>> Will charging my 6500c with a 3.7v and it getting warm be of
>>>> detriment???
>>> J B
>>
>> Yes it will knacker your battery and could knacker the phone as
>> well......
>> Keep to the specified voltage when charging.
>> Regards
>>
>>
> Cobblers, both the phone and Li-ion Batteries have voltage and current
> regulators
>
> You would have to put well over 9 volts into a phone like a Nokia
> before you could overwhelm the regulators
"Bob Eager" <rde42@spamcop.net> wrote in message
news:176uZD2KcidF-pn2-qTdizP6qBVE7@rikki.tavi.co.uk...
>> >> Yes it will knacker your battery and could knacker the phone as
>> >> well......
>> >> Keep to the specified voltage when charging.
>> >
>> > So, did Nokia make 5v chargers with a fat plug?
>> > Just been in the loft and I ain't got one!!
>>
>> USB is 5v - so therefore to be able to charge from USB requires the
>> phone to need 5v input. Consequently, the chargers for the phones were
>> 5v chargers.
>
> Easy enough to put a regulator into the cable...in fact I have such a
> cable and frequently charge my new-ish Nokia from the USB port on my
> monitor...!
I was hoping to be able to use what I'd bought without alterations!! :-)
On Tue, 26 May 2009 20:11:48 UTC, "J B" <jb@invalid.com> wrote:
> "Bob Eager" <rde42@spamcop.net> wrote in message
> news:176uZD2KcidF-pn2-qTdizP6qBVE7@rikki.tavi.co.uk...
> >> >> Yes it will knacker your battery and could knacker the phone as
> >> >> well......
> >> >> Keep to the specified voltage when charging.
> >> >
> >> > So, did Nokia make 5v chargers with a fat plug?
> >> > Just been in the loft and I ain't got one!!
> >>
> >> USB is 5v - so therefore to be able to charge from USB requires the
> >> phone to need 5v input. Consequently, the chargers for the phones were
> >> 5v chargers.
> >
> > Easy enough to put a regulator into the cable...in fact I have such a
> > cable and frequently charge my new-ish Nokia from the USB port on my
> > monitor...!
>
> I was hoping to be able to use what I'd bought without alterations!! :-)
I wasn't suggesting you modify anything - just correcting the
misconception...
"J B" <jb@invalid.com> wrote in message
news:7830odF1kf0eeU1@mid.individual.net...
> "Steve Terry" <gFOURwwk@tesco.net> wrote in message
> news:gvhgoo$6ka$1@news.albasani.net...
>>>>> Will charging my 6500c with a 3.7v and it getting warm be of
>>>>> detriment???
>>>> J B
>>>
>>> Yes it will knacker your battery and could knacker the phone as
>>> well......
>>> Keep to the specified voltage when charging.
>>> Regards
>>>
>> Cobblers, both the phone and Li-ion Batteries have voltage and current
>> regulators
>>
>> You would have to put well over 9 volts into a phone like a Nokia
>> before you could overwhelm the regulators
>
> But, what about lower voltages? V = I x R etc
> J B
>
Too low a voltage and it simply stops charging
"Steve Terry" <gFOURwwk@tesco.net> wrote in message
news:gvhlg8$dmu$1@news.albasani.net...
>> But, what about lower voltages? V = I x R etc
>>
> Too low a voltage and it simply stops charging
On Tue, 26 May 2009 21:20:26 UTC, "J B" <jb@invalid.com> wrote:
> "Steve Terry" <gFOURwwk@tesco.net> wrote in message
> news:gvhlg8$dmu$1@news.albasani.net...
> >> But, what about lower voltages? V = I x R etc
> >>
> > Too low a voltage and it simply stops charging
>
> So, why did it get warm???
It has a voltage regulator in it. If the input voltage is higher than
needed, the regulator reduces it to the correct value. The difference in
voltage doesn't disappear into thin air, but is dissipated as heat. If
the voltage difference is Vd, and the current drawn is I, then
P = Vd x I
which is probably enough to accoutn for the heating.
"Bob Eager" <rde42@spamcop.net> wrote in message
news:176uZD2KcidF-pn2-fl8o5dXSsK7l@rikki.tavi.co.uk...
>> So, why did it get warm???
>
> It has a voltage regulator in it. If the input voltage is higher than
> needed, the regulator reduces it to the correct value. The difference in
> voltage doesn't disappear into thin air, but is dissipated as heat.
"J B" <jb@invalid.com> wrote in message
news:782duhF1im66bU1@mid.individual.net...
>I was always happy with Nokias as they had the same charger for all phones.
> Anyway, of course, they changed this to a thinner plug, but the chargers
> were interchangeable with a small adapter. These are known in our house as
> the 'fat' and 'thin' chargers
> Anyway, now I have a 6500c, which has a different charger which goes into
> the usb 'hole'.
Isn't this part of the phone makers' move to a standard charger format?
--
Brian
"Fight like the Devil, die like a gentleman."
On May 27, 7:31*am, "J B" <j...@invalid.com> wrote:
> "Bob Eager" <rd...@spamcop.net> wrote in message
>
> news:176uZD2KcidF-pn2-fl8o5dXSsK7l@rikki.tavi.co.uk...
>
> >> So, why did it get warm???
>
> > It has a voltage regulator in it. If the input voltage is higher than
> > needed, the regulator reduces it to the correct value. The difference in
> > voltage doesn't disappear into thin air, but is dissipated as heat.
>
> But ... the voltage is *lower*.
>
> --
> J B
Perhaps the current limiter in the phone works on measuring and
expecting a voltage drop across the battery which is greater than the
3.7V input and is therefore allowing more current through to try and
get the required drop across the battery for charging?
J B wrote:
>
> "John" <123@321.00> wrote in message
> news:gvh5kd$afi$1@news.eternal-september.org...
> >
> > Yes it will knacker your battery and could knacker the phone as well......
> > Keep to the specified voltage when charging.
>
> So, did Nokia make 5v chargers with a fat plug?
> Just been in the loft and I ain't got one!!
>
> --
> J B
mark <marpate2@gmail.com> wrote:
> Perhaps the current limiter in the phone works on measuring and
> expecting a voltage drop across the battery which is greater than the
> 3.7V input and is therefore allowing more current through to try and
> get the required drop across the battery for charging?
I suspect it gets warm simply because there's more energy available for
charging. Looking at the pile of chargers in front of me:
ACP-12X 5.7V 800mA large pin
AC-4X 5.0V 890mA small pin
Both are 'rectangular'. I also had a 'rounded' charger:
ACP-7X 3.7V 355mA large pin
That would mean it'll charge the battery more slowly, and so produce less
heat. The phone will have a switching regulator for charging the battery
(there's no room for a linear regulator in a small phone as it would need
heatsinking) so it'll adapt to the voltage available.
I think, guessing by the weight, the ACP-7X has a 50Hz transformer in it,
while the others have a switching regulator and a higher frequency
transformer (which can be much lighter). That would agree with the others
being 100-240V while the ACP-7X is 230V only.
I've used all three types interchangeably on phones made in the last 5 years
with no problems. (Except the AC-4X on large-pin phones due to lack of
suitable adaptor).
"Theo Markettos" <theom+news@chiark.greenend.org.uk> wrote in message
news:6XB*FT2Hs@news.chiark.greenend.org.uk...
> I've used all three types interchangeably on phones made in the last 5
> years
> with no problems. (Except the AC-4X on large-pin phones due to lack of
> suitable adaptor).
So, I've got a collection of 'fat' chargers, ranging from the original one I
had with the 702 (wasn't that a 61XX?) through to the more recent one I had
for the 5140
J B <jb@invalid.com> wrote:
> So, I've got a collection of 'fat' chargers, ranging from the original one
> I had with the 702 (wasn't that a 61XX?) through to the more recent one I
> had for the 5140
>
> Which one shall I take abroad on Saturday???? :-)
I'd take any that are 100-240V, on the offchance you might be going
somewhere with 110V. These may do better at cleaning up the mains if it's
spiky.
Of course the Right Answer would be to take one with the right mains plug
for where you're going
"Theo Markettos" <theom+news@chiark.greenend.org.uk> wrote in message
news:6XB*+B3Hs@news.chiark.greenend.org.uk...
>J B <jb@invalid.com> wrote:
>> So, I've got a collection of 'fat' chargers, ranging from the original
>> one
>> I had with the 702 (wasn't that a 61XX?) through to the more recent one I
>> had for the 5140
>>
>> Which one shall I take abroad on Saturday???? :-)
>
> I'd take any that are 100-240V, on the offchance you might be going
> somewhere with 110V. These may do better at cleaning up the mains if it's
> spiky.
>
> Of course the Right Answer would be to take one with the right mains plug
> for where you're going
Sorry, I should have said ........ we're going to the South of France - I'm
fairly certain they are 220/240v and we have an adapter.
On May 27, 10:15*pm, Theo Markettos <theom
+n...@chiark.greenend.org.uk> wrote:
> mark <marpa...@gmail.com> wrote:
> > Perhaps the current limiter in the phone works on measuring and
> > expecting a voltage drop across the battery which is greater than the
> > 3.7V input and is therefore allowing more current through to try and
> > get the required drop across the battery for charging?
>
> I suspect it gets warm simply because there's more energy available for
> charging. * Looking at the pile of chargers in front of me:
>
> ACP-12X 5.7V 800mA large pin
> AC-4X 5.0V 890mA small pin
>
> Both are 'rectangular'. *I also had a 'rounded' charger:
> ACP-7X 3.7V 355mA large pin
>
> That would mean it'll charge the battery more slowly, and so produce less
> heat.<snip>
> Theo
Right, but OP says that the lower voltage charger is producing
__more__ heat.
"Theo Markettos" <theom+news@chiark.greenend.org.uk> wrote in message
news:6XB*FT2Hs@news.chiark.greenend.org.uk...
> mark <marpate2@gmail.com> wrote:
>> Perhaps the current limiter in the phone works on measuring and
>> expecting a voltage drop across the battery which is greater than the
>> 3.7V input and is therefore allowing more current through to try and
>> get the required drop across the battery for charging?
>
> I suspect it gets warm simply because there's more energy available
> for
> charging. Looking at the pile of chargers in front of me:
>
> ACP-12X 5.7V 800mA large pin
> AC-4X 5.0V 890mA small pin
>
> Both are 'rectangular'. I also had a 'rounded' charger:
> ACP-7X 3.7V 355mA large pin
>
Nobody has given a valid reason for why the OP's phone gets warmer with
the 3.7V charger and there should be less energy available for charging
with this charger.
AFAIK the charging voltage for LiIon batteries is 4.2 V so the phone
would need to boost the 3.7V to charge the battery. Seems to me it is a
question of whether a particular model of phone can accept 3.7 to 5.7V
as it's charging voltage.
> That would mean it'll charge the battery more slowly, and so produce
> less
> heat. The phone will have a switching regulator for charging the
> battery
> (there's no room for a linear regulator in a small phone as it would
> need
> heatsinking) so it'll adapt to the voltage available.
>
> I think, guessing by the weight, the ACP-7X has a 50Hz transformer in
> it,
> while the others have a switching regulator and a higher frequency
> transformer (which can be much lighter). That would agree with the
> others
> being 100-240V while the ACP-7X is 230V only.
>
> I've used all three types interchangeably on phones made in the last 5
> years
> with no problems. (Except the AC-4X on large-pin phones due to lack
> of
> suitable adaptor).
>
> Theo
mark <marpate2@gmail.com> wrote:
> Right, but OP says that the lower voltage charger is producing
> __more__ heat.
Ah. It wasn't clear whether the heat was coming from the phone or the
charger.
The 3.7V charger has a linear 50Hz transformer, so is less efficient than
the switched-mode 5.xV models. Therefore the /charger/ may heat up more.
But the 5.xV models dump more power in the phone, so the /phone/ may heat up
more with those.
"Theo Markettos" <theom+news@chiark.greenend.org.uk> wrote in message
news:4XB*ym6Hs@news.chiark.greenend.org.uk...
> mark <marpate2@gmail.com> wrote:
>> Right, but OP says that the lower voltage charger is producing
>> __more__ heat.
>
> Ah. It wasn't clear whether the heat was coming from the phone or the
> charger.
<pedant mode>
I said ... <<my 6500c is getting warm whilst charging>> ;-)
> The 3.7V charger has a linear 50Hz transformer, so is less efficient than
> the switched-mode 5.xV models. Therefore the /charger/ may heat up more.
> But the 5.xV models dump more power in the phone, so the /phone/ may heat
> up
> more with those.
But ..... the *phone* is getting warm with the 3.7v charger
".newman" <aa111@despammed.com> wrote in message
news:4A1D077C.63066FB9@despammed.com...
>> So, did Nokia make 5v chargers with a fat plug?
>> Just been in the loft and I ain't got one!!
>>
> AC-2X 5.3v
Further visit to 'the bottom drawer' reveals an ACP-12X (5.7v 800mA)
It's on the phone as we speak and ........... it's cool! :-))
On May 28, 9:55*am, "IanM" <nos...@nospam.co.uk> wrote:
> "Theo Markettos" <theom+n...@chiark.greenend.org.uk> wrote in message
>
> news:6XB*FT2Hs@news.chiark.greenend.org.uk...
>
>
>
> > mark <marpa...@gmail.com> wrote:
> >> Perhaps the current limiter in the phone works on measuring and
> >> expecting a voltage drop across the battery which is greater than the
> >> 3.7V input and is therefore allowing more current through to try and
> >> get the required drop across the battery for charging?
>
> > I suspect it gets warm simply because there's more energy available
> > for
> > charging. * Looking at the pile of chargers in front of me:
>
> > ACP-12X 5.7V 800mA large pin
> > AC-4X 5.0V 890mA small pin
>
> > Both are 'rectangular'. *I also had a 'rounded' charger:
> > ACP-7X 3.7V 355mA large pin
>
> Nobody has given a valid reason for why the OP's phone gets warmer with
> the 3.7V charger and there should be less energy available for charging
> with this charger.
>
> AFAIK the charging voltage for LiIon batteries is 4.2 V so the phone
> would need to boost the 3.7V to charge the battery. Seems to me it is a
> question of whether a particular model of phone can accept 3.7 to 5.7V
> as it's charging voltage.
Right, so with the correct 5V charger, the phone (somehow) limits
current to have 4.2V charging voltage across the battery. With the
3.7V charger, it cannot measure the 4.2V drop so increases current
(V=I*R) to try to achieve it and allows full current from the charger.
"mark" <marpate2@gmail.com> wrote in message
news:c5c4af6b-42a9-4773-949e-448cfbae52d4@r34g2000vba.googlegroups.com...
>Right, so with the correct 5V charger, the phone (somehow) limits
>current to have 4.2V charging voltage across the battery. With the
>3.7V charger, it cannot measure the 4.2V drop so increases current
>(V=I*R) to try to achieve it and allows full current from the charger.
Well, it was 1974 when I failed my Physics A level, but I think I understand
what you're saying! ;-)
On May 29, 11:58*am, "J B" <j...@invalid.com> wrote:
> "mark" <marpa...@gmail.com> wrote in message
>
> news:c5c4af6b-42a9-4773-949e-448cfbae52d4@r34g2000vba.googlegroups.com...
>
> >Right, so with the correct 5V charger, the phone (somehow) limits
> >current to have 4.2V charging voltage across the battery. With the
> >3.7V charger, it cannot measure the 4.2V drop so increases current
> >(V=I*R) to try to achieve it and allows full current from the charger.
>
> Well, it was 1974 when I failed my Physics A level, but I think I understand
> what you're saying! ;-)
>
> --
> J B
LOL ... it's been a while for me too and doesn't mean that I am
right .. but is the only logical explanation I can come up with
Nokia Chargers 
Linear Mode
