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Posted by Jack on December 7, 2009, 7:00 pm


> First there is no charge complete. Second make sure you have updated to t=
he
> latest firmware as there was some problems with the battery indicator.
> >> 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 t=
he
> >>>> 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. =A0I think the onl=
y 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 o=
n
> >>>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?

Posted by Gene E. Bloch on December 7, 2009, 7:11 pm


On Mon, 7 Dec 2009 16:00:07 -0800 (PST), Jack 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.
>>>> 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?

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

Posted by Peter H. Coffin on December 7, 2009, 7:32 pm


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

Posted by Retired VIP on December 7, 2009, 8:21 am


wrote:

>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.

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.

Posted by Howard Lester on December 8, 2009, 2:51 pm


"Jack" wrote

>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.

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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