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How long to charge Garmin GPS with a USB cable connected to PC?

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Jack

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Dec 6, 2009, 6:13:01 PM12/6/09
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I have a Garmin Nuvi 255WT. I turned off the GPS and connected it to
my PC with a USB cable. The screen is dark and says: "Charging
battery. Slide the power key to turn on". But 24 hours has past. It is
still the same message.

Thanks.

Ashton Crusher

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Dec 6, 2009, 7:01:37 PM12/6/09
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On Sun, 6 Dec 2009 15:13:01 -0800 (PST), Jack <junw...@gmail.com>
wrote:


Was teh computer on?? The manual for my 200W says it takes about 4
hours to charge up.

ps56k

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Dec 6, 2009, 9:16:26 PM12/6/09
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"Jack" <junw...@gmail.com> wrote in message
news:8d89bfd2-fff1-4f4c...@u25g2000prh.googlegroups.com...

HUH ? - with the USB cable connected, it usually powers up in "computer
mode"
with the screen showing a computer image....

Your description is normally what I see with the Garmin 12v DC special car
charger ?


keith

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Dec 7, 2009, 7:21:09 AM12/7/09
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On Sun, 06 Dec 2009 20:16:26 -0600, ps56k wrote:

> "Jack" <junw...@gmail.com> wrote in message

> news:8d89bfd2-fff1-4f4c-8368-
c6c3ed...@u25g2000prh.googlegroups.com...


>>I have a Garmin Nuvi 255WT. I turned off the GPS and connected it to
>> my PC with a USB cable. The screen is dark and says: "Charging battery.
>> Slide the power key to turn on". But 24 hours has past. It is still the
>> same message.
>>
>> Thanks.
>
> HUH ? - with the USB cable connected, it usually powers up in "computer
> mode"
> with the screen showing a computer image....
>
> Your description is normally what I see with the Garmin 12v DC special
> car charger ?

Are you using the 'right' USB cable? The garmin one had a resistor
connected between the live and one of the earth lines (which I assume is
disconnected at the computer end) and the device won't switch to the
correct mode without this signal voltage.

Keith

Retired VIP

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Dec 7, 2009, 8:21:40 AM12/7/09
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On Sun, 6 Dec 2009 15:13:01 -0800 (PST), Jack <junw...@gmail.com>
wrote:

>I have a Garmin Nuvi 255WT. I turned off the GPS and connected it to

That is normal, my 750 always says it's charging the battery any time
the unit is turned off while external power is applied. It doesn't
really keep charging the battery but it does monitor the battery's
state of charge. I think it will switch back and forth between charge
and monitor as needed.

Jack

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Dec 7, 2009, 1:59:18 PM12/7/09
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On Dec 7, 4:21 am, keith <with...@btinternet.com> wrote:
> On Sun, 06 Dec 2009 20:16:26 -0600, ps56k wrote:
> > "Jack" <junw2...@gmail.com> wrote in message
> > news:8d89bfd2-fff1-4f4c-8368-
>
> c6c3ed90c...@u25g2000prh.googlegroups.com...

>
> >>I have a Garmin Nuvi 255WT. I turned off the GPS and connected it to
> >> my PC with a USB cable. The screen is dark and says: "Charging battery.
> >> Slide the power key to turn on". But 24 hours has past. It is still the
> >> same message.
>
> >> Thanks.
>
> > HUH ? - with the USB cable connected, it usually powers up in "computer
> > mode"
> > with the screen showing a computer image....
>
> > Your description is normally what I see with the Garmin 12v DC special
> > car charger ?
>
> Are you using the 'right' USB cable?  The garmin one had a resistor
> connected between the live and one of the earth lines (which I assume is
> disconnected at the computer end) and the device won't switch to the
> correct mode without this signal voltage.
>
> Keith

I am using a USB cable for digital camera. My notebook PC is always on
except that it may be in standby node sometime. But even at standby
mode, the GPS still shows that the battery is being charged.
After the battery is full, will it show a message like: "Battery is
fully charged"?

Thanks.

ps56k

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Dec 7, 2009, 3:37:43 PM12/7/09
to

"Jack" <junw...@gmail.com> wrote in message
news:256029d5-eeae-47db...@z4g2000prh.googlegroups.com...

Very Weird -
Using all our USB cables laying around from cameras, etc -
they all work the same way.... on our 255, and 260...
with the GPS going into "computer connected mode" vs your Car Charger mode

Do you have any other USB cables to try ?
I'm guessing that you don't see the GPS as a flash drive on your computer ?

Lastly - since I only see that message when using the Garmin 12v DC car
charger,
have not really seen a "charging complete" - just the dark screen "charging"
message.


keith

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Dec 7, 2009, 3:52:42 PM12/7/09
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On Mon, 07 Dec 2009 10:59:18 -0800, Jack wrote:


>
> I am using a USB cable for digital camera. My notebook PC is always on
> except that it may be in standby node sometime. But even at standby
> mode, the GPS still shows that the battery is being charged. After the
> battery is full, will it show a message like: "Battery is fully
> charged"?
>
> Thanks.

I can't remember there being any indication that charging is complete - I
tend to do all my charging while in use in the car. I think the only way
you can find the state of the battery charge is to disconnect from the
usb cable, and when the unit starts up the charge indicator is shown on
one of the first screens.

Keith

Sunshine

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Dec 7, 2009, 4:37:52 PM12/7/09
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On Mon, 07 Dec 2009 14:52:42 -0600, keith <wit...@btinternet.com>
wrote:

On my Nuvi 760, I don't see any battery information during startup,
but of course there's the 'secret' screen reached by pressing and
holding the battery icon for several seconds. There you can see the
battery capacity expressed as a percentage as well as actual voltage.

ps56k

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Dec 7, 2009, 5:27:13 PM12/7/09
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"Sunshine" <suns...@none.invalid> wrote in message
news:patqh5l962bqbsddc...@4ax.com...

I think he meant the Battery Icon up in the corner,
as on some models, the GPS auto-flips into map mode after a minute or so...
I think my 255 does, but my 260 doesn't


TheDuck

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Dec 7, 2009, 6:11:23 PM12/7/09
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First there is no charge complete. Second make sure you have updated to the
latest firmware as there was some problems with the battery indicator.

"ps56k" <pschuman_...@interserv.com> wrote in message
news:hfjvga$oh7$1...@news.eternal-september.org...

Jack

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Dec 7, 2009, 7:00:07 PM12/7/09
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On Dec 7, 3:11 pm, "TheDuck" <thed...@pond.net> wrote:
> First there is no charge complete. Second make sure you have updated to the
> latest firmware as there was some problems with the battery indicator.
>
> "ps56k" <pschuman_no_spam...@interserv.com> wrote in message
>
> news:hfjvga$oh7$1...@news.eternal-september.org...
>
>
>
> > "Sunshine" <sunsh...@none.invalid> wrote in message
> >news:patqh5l962bqbsddc...@4ax.com...
> >> On Mon, 07 Dec 2009 14:52:42 -0600, keith <with...@btinternet.com>

> >> wrote:
>
> >>>On Mon, 07 Dec 2009 10:59:18 -0800, Jack wrote:
>
> >>>> I am using a USB cable for digital camera. My notebook PC is always on
> >>>> except that it may be in standby node sometime. But even at standby
> >>>> mode, the GPS still shows that the battery is being charged. After the
> >>>> battery is full, will it show a message like: "Battery is fully
> >>>> charged"?
>
> >>>> Thanks.
>
> >>>I can't remember there being any indication that charging is complete - I
> >>>tend to do all my charging while in use in the car.  I think the only way
> >>>you can find the state of the battery charge is to disconnect from the
> >>>usb cable, and when the unit starts up the charge indicator is shown on
> >>>one of the first screens.
>
> >>>Keith
>
> >> On my Nuvi 760, I don't see any battery information during startup,
> >> but of course there's the 'secret' screen reached by pressing and
> >> holding the battery icon for several seconds. There you can see the
> >> battery capacity expressed as a percentage as well as actual voltage.
>
> > I think he meant the Battery Icon up in the corner,
> > as on some models, the GPS auto-flips into map mode after a minute or
> > so...
> > I think my 255 does, but my 260 doesn't

Thank you all for the information.
In general, it is better to discharge a battery completely then charge
it. This will extend the battery's life. If I connect the GPS to the
car charger all the time, the battery is being charged all the time.
Will this shorten the life time of the battery?

Gene E. Bloch

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Dec 7, 2009, 7:11:34 PM12/7/09
to

That is for NiCads, and is no longer relevant.

The charging circuitry in modern equipment also is pretty smart about
treating batteries appropriately.

Sorry, I can't give any useful details - they've faded from my memory.

--
Gene E. Bloch letters0x40blochg0x2Ecom

Peter H. Coffin

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Dec 7, 2009, 7:32:25 PM12/7/09
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On Mon, 7 Dec 2009 16:00:07 -0800 (PST), Jack wrote:
> Thank you all for the information.
> In general, it is better to discharge a battery completely then charge
> it. This will extend the battery's life. If I connect the GPS to the
> car charger all the time, the battery is being charged all the time.
> Will this shorten the life time of the battery?

Hasn't been true since NiCad batteries went out of style. Most
contemporary batteries last longest when they're discharged sparingly
and kept close to fully charged.

--
Every fleeting thought you've ever had in your life, no matter how
bizarre, is someone's lifelong obsession. And he has a website.
-- Skif's Internet Theorem

Howard Lester

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Dec 8, 2009, 2:51:34 PM12/8/09
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"Jack" wrote

I have a Nuvi 350. It comes with both an AC charger and a USB cable. Both,
after just a few hours of charging, give me the message "Charging Complete."


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