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Trickle Charging a C7 battery

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Smarty

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Dec 30, 2013, 4:56:44 PM12/30/13
to
Having owned C5 and C6 convertibles which have been stored for the
winter, I have become accustomed to using a trickle charger directly
connected to the battery for many years. The rest of the car has been
disconnected and only the trickle charger has been connected to the battery.

The new C7 battery is no longer under the hood. It is in the trunk, and
not as easily to disconnect and trickle charge.

My question:

Can I trickle charge via the cigarette lighter socket or another
auxiliary power 12 V socket which the car also provides? Or do I have to
get into the trunk, remove the trunk lining, and then connect directly
across the battery as I have previously done for the last 15 years on my
C5 and C6?

Any advice would be appreciated.

Thanks.

Unquestionably Confused

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Dec 31, 2013, 12:09:32 AM12/31/13
to
Turn off the car, open door, remove ignition key. Plug something into
the accessory socket. If it works, you can trickle charge via that
outlet. If it's dead, so are you hopes of trickle charging in that manner.

Most of the trickle chargers available these days (battery maintainers)
have both battery clips as well as a plug and socket. Why not just
connect a lightweight cable and plug to the battery? Summer months,
leave the plug capped and cable stowed next to battery. Connect it to
the maintainer cable in the winter. That's how I do it with my C5 and
formerly did it with my C4.



Smarty

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Dec 31, 2013, 8:24:17 PM12/31/13
to
Thank you for the helpful advice. I was concerned that the 12 volt
sockets had diodes or some other method to prevent a current source to
drive them rather than use them as a source of current. I also worried
that the modern technique of disabling a power port when the key is off
may, as you have indicated, disable the port after the engine is shut down.

I like the idea of a direct connection to the battery, and indeed did
that very same thing on both my C5 and C6. In both cases, however, I did
not make such an attachment when the car was in the warranty period. I
merely opened the hood and used the alligator clips / connectors
directly to the battery.

With the C7 battery concealed under trunk carpeting, this does not
appear to be an option, although I may actually find it to be easier
than I think. I have not pulled up the trunk carpet to really research
this carefully, and felt my "best" option for the warranty period would
be to use one of the 12 volt sockets.

The C7 actually has a 12V port in the trunk, and perhaps this one will
stay alive after the engine is off. I intend to test this as soon as the
trickle charger and accessory cigarette plug cord arrive.

Thank you very much again.

>
>
>

Rufus

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Dec 31, 2013, 10:29:58 PM12/31/13
to
...your C7 has a key?

--
- Rufus

Smarty

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Jan 2, 2014, 9:18:06 PM1/2/14
to
Similar to the C6 and C5, in having a fob used as a remote control as
well as a key. The only difference in the C7 is that the key is hidden
inside the fob, and can be extracted by a simple motion. In the older C6
and C5, the key was a separate item and was not designed to be stowed
inside the fob..

Rufus

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Jan 3, 2014, 3:03:18 PM1/3/14
to
My '08 Z06 key stores inside the fob...hopefully I'll never have to use
it. Though I have had the fob battery die on me once - now I keep a
spare in the box.

I haven't seen a C7 up close, but it sounds like they put the battery in
the C7 in the same location as on my Z06 - right rear? Difference being
that mine is in what was/is a storage compartment with a lid in an
standards C6, and the hinged lid is still there and provides easy access
to the battery. So how are you supposed to change the thing?

But I should think that the ability to charge it would be similar to
being able to do the same on my Z06 - check with a tech.

--
- Rufus

Smarty

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Jan 3, 2014, 5:30:28 PM1/3/14
to
I confirmed that the trunk-mounted accessory outlet does indeed support
trickle charging, and the dealership's owner has a C7 apparently which
is being charged in this manner. Thus I do not have a need to remove any
carpeting or trim nor do I need to physically see the battery.

Should I have a dead battery and need a quick jump start, then the issue
of battery access will become a bit more difficult.

The C7 battery supposedly is in the rear passenger side area of the
trunk. My C6 convertible had a compartment there as well as one on the
left side. In the C7 convertible there is only one compartment, located
on the left. The area of trunk on the rear right where I was told the
battery is located has a flap of upholstered hardboard / cardboard which
supposedly can be lifted and temporarily moved to expose the battery.

I did not realize that the Z06 fob was different. Neither my C5 or C6
fobs can store the key, although I have seen / owned other fobs
(Porsche, Acura, Lexus) which use this internal design which now shows
up on the C7.



Rufus

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Jan 3, 2014, 5:41:26 PM1/3/14
to
I still have a compartment on the left side, and that's where I store my
tire inflator, fault code reader, etc. Don't have a trunk mounted
accessory outlet though...just the one in the center console. I think
my battery terminal connections have quick releases that you can undo by
hand...I haven't looked under there in a while. You may want to ask if
that trunk connector might also support jump starting somehow.

I think I've heard of people buying later fobs with key storage as an
"upgrade" for older C6's without that, but I'm not sure you can do that
for all of them - my key is integrated into the end cap of the fob.

--
- Rufus

Steve

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Jan 4, 2014, 10:51:57 AM1/4/14
to
On or about Fri, 03 Jan 2014 17:30:28 -0500, Smarty
<nob...@nobody.com> wrote or did cause to be written:

...
>
>I did not realize that the Z06 fob was different. Neither my C5 or C6
>fobs can store the key, although I have seen / owned other fobs
>(Porsche, Acura, Lexus) which use this internal design which now shows
>up on the C7.
>
>
All 2005-2007 C6's had an external key. All 2008-2013 C6's had an
internal key. The 2007 user's manual showed the new FOB design with
the internal key but GM had issues with it so they stayed with the
external key through the entire '07 model year.

I prefer the external key detached and kept safely at home. You almost
never need it and the last thing you want when you do manage to lock
the FOB inside the car is for the key to be there also.

Rufus

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Jan 4, 2014, 3:15:01 PM1/4/14
to
...I REALLY needed it when my fob battery died on me during a trip to
Las Vegas. I would never even think of leaving my key at home after
that, and my fob is always in a pocket when I drive the car; I treat it
like any other key. One of the gals in my office that has an '06 C6
didn't even realize she had a key...now she carries it.

There's also a way to program a warning if you close both doors and a
fob (or multiples) are still in the car; the horn will sound and the
driver's door will remain unlocked until you come back and remove at
least one of them. That's how I set up my Z06, so it's not even
possible to lock a fob inside it. As long as the fob battery is alive,
I guess...

--
- Rufus

Smarty

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Jan 6, 2014, 11:06:49 AM1/6/14
to
On 1/3/2014 5:41 PM, Rufus wrote:
>
> I still have a compartment on the left side, and that's where I store
> my tire inflator, fault code reader, etc. Don't have a trunk mounted
> accessory outlet though...just the one in the center console. I think
> my battery terminal connections have quick releases that you can undo
> by hand...I haven't looked under there in a while. You may want to
> ask if that trunk connector might also support jump starting somehow.
>
> I think I've heard of people buying later fobs with key storage as an
> "upgrade" for older C6's without that, but I'm not sure you can do
> that for all of them - my key is integrated into the end cap of the fob.
>
The C7 key is also integrated into the end cap, which makes a very nice
solution. I bought my C6 convertible just as I bought my C7 convertible,
as soon as they were released, so I am guessing my C6 fob being the
original design may have prevented me from seeing and knowing that a
later revision was optional offered or substituted.

The trunk mounted cigarette lighter-style socket is described as a
charging port and accessory port in the C7 owners manual. I highly doubt
that it is designed to handle anywhere near the amperage for a quick
start but certainly can easily handle the 1.5 amp current provided by my
CTEK charger.

Smarty

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Jan 6, 2014, 11:09:22 AM1/6/14
to
Steve, you make an excellent point which I had never considered. I am
now thinking of separating the internal key from the fob and leaving it
in a safe place outside the vehicle. I am just the very type of
forgetful geezer to lock my fob in the car, despite beeping and tooting
and flashing lights.

Smarty

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Jan 6, 2014, 11:10:54 AM1/6/14
to
Sounds like I am best carrying the key around in a pants pocket
separated from the fob!



Steve

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Jan 6, 2014, 11:47:28 AM1/6/14
to
On or about Mon, 06 Jan 2014 11:09:22 -0500, Smarty
The best solution I have found is to have a spare made that does not
include the plastic cap. A lot of people cut it off or use the blank
that doesn't have the plastic part. Carry that in your wallet where it
isn't in the way all the time. OR find a hiding place but don't tell
us where it is. :) But even if someone finds the hiding place and
gets in, the alarm goes off and they still can't drive away. And, with
the alarm going off they could just as easily have broken the window.

Steve

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Jan 6, 2014, 12:09:46 PM1/6/14
to
On or about Sat, 04 Jan 2014 12:15:01 -0800, Rufus <n...@home.com>
By FAR the most reported "I locked my FOB in the car" occurs when
someone changes clothes and tosses the FOB in the back. Think golf or
gym. Yes, there is an alarm. The problem is that none of the three
receivers will identify that the FOB is in the trunk. They unlock the
hatch with the button at the license, toss the bag in, and close the
hatch. When they pushed the button on the car the FOB in the bag was
seen by they outside antenna at the back. When the FOB went inside
neither of the antennas in the B pillars could see it and the hatch
antenna lost it also. Popping the hatch does not unlock the doors so
when the hatch closes the car is completely locked again except the
key is now inside with the FOB instead of outside where the FOB should
be.

BTW, two FOBs inside with one removed works the same as one removed.
The car locks. meaning there's another way to lock a FOB inside the
car with no alarm although no real harm done in that case.

A dead battery is easily fixed to get you back in. Worse is a damaged
FOB where you really must have a physical key. So, you don't leave
your key at home, but you don't want it locked inside the car either.
Keep it in your pants. Where have I heard that before? :)

Smarty

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Jan 6, 2014, 6:45:28 PM1/6/14
to
On 1/6/2014 11:47 AM, Steve wrote:
> On or about Mon, 06 Jan 2014 11:09:22 -0500,
> <nob...@nobody.com> wrote or did cause to be written:
>
> The best solution I have found is to have a spare made that does not
> include the plastic cap. A lot of people cut it off or use the blank
> that doesn't have the plastic part. Carry that in your wallet where it
> isn't in the way all the time. OR find a hiding place but don't tell
> us where it is. :) But even if someone finds the hiding place and gets
> in, the alarm goes off and they still can't drive away. And, with the
> alarm going off they could just as easily have broken the window.


I'm now wondering if a locksmith could make a duplicate of the fob key
or if it has some type of fancy design or technology which makes the
duplication very difficult / expensive?

Steve

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Jan 7, 2014, 8:51:04 AM1/7/14
to
On or about Mon, 06 Jan 2014 18:45:28 -0500, Smarty
<nob...@nobody.com> wrote or did cause to be written:

>
>I'm now wondering if a locksmith could make a duplicate of the fob key
>or if it has some type of fancy design or technology which makes the
>duplication very difficult / expensive?

The 05-07 is a Hilman B-106 blank. I don't know what the number is for
08-13 and your C7 but, depending on the key combination, some newer
keys can be duplicated with the older blank. The new key is slightly
narrower than the old one.

Any good locksmith should be able to make a duplicate. With the C6 the
keys went back to just a hunk of metal. No more electronics.

corvet...@gmail.com

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Jan 11, 2014, 2:26:15 PM1/11/14
to

Rufus

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Jan 11, 2014, 2:34:56 PM1/11/14
to
...I can only wonder if that one is really any different from this one -

<http://www.corvettemods.com/Corvette-C6-GM-Battery-TenderCharger_p_5518.html>

Which was actually going to be my first suggestion.

--
- Rufus

Unquestionably Confused

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Jan 11, 2014, 5:25:12 PM1/11/14
to
On 1/11/2014 1:34 PM, Rufus wrote:
> ...I can only wonder if that one is really any different from this one -
>
> <http://www.corvettemods.com/Corvette-C6-GM-Battery-TenderCharger_p_5518.html>
>
>
> Which was actually going to be my first suggestion.
>


Wow! What a deal! With that sale price, I wonder how much better it
would be than a Schauer or Black & Decker for about $80 to $90 less?

Suppose it would be just the thing if you were going to show your car
and wanted to put the battery maintainer on the roof so everyone knows
you're "keeping it real."

Would you buy windshield washer fluid in a jug with a C-7 logo on it for
$12.00?



Smarty

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Jan 11, 2014, 7:59:15 PM1/11/14
to
The re-branded CTEK charger is an excellent charger, and similar to the
one I am using. I can do without the C& logo and extra price premium. If
there is one thing a C7 does not need, it is any additional attempts to
grab attention with C7 logos. This C7 is a magnet for drawing anybody
and everybody's attention,

For whatever it is worth, BTW, the CTEK charging through the trunk
auxiliary port is working out great. Very nice way to keep it charged.
The only very minor problem is to be sure the trunk lid is down far
enough to prevent the interior trunk lamps from illuminating / drawing
power, while at the same time not applying a lot of crushing force on
the CTEK cable which is coming out of the trunk to the charger.
>
>
>

Rufus

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Jan 11, 2014, 10:38:43 PM1/11/14
to
...you'd think they'd have been savvy enough provide an exit route for
such a device...on the C6 and certainly the C7. Seeing as this a
factory et-al sort of chunk of kit:

<http://www.amazon.com/Genuine-GM-Accessories-20929740-Battery/dp/B008FCCX9G>

All cheap at half the price...

I find I haven't needed to keep my Z06 on a charger at all...expected to
given some of the things I've read, but never had a problem with it's
battery. Other than the fob...

--
- Rufus

Unquestionably Confused

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Jan 11, 2014, 11:16:02 PM1/11/14
to
On 1/11/2014 9:38 PM, Rufus wrote:
> Smarty wrote:
>> On 1/11/2014 5:25 PM, Unquestionably Confused wrote:
>>> On 1/11/2014 1:34 PM, Rufus wrote:
>>>> ...I can only wonder if that one is really any different from this
>>>> one -
>>>>
>>>> <http://www.corvettemods.com/Corvette-C6-GM-Battery-TenderCharger_p_5518.html>
>>>>
>>>>
[snip]
>
> ...you'd think they'd have been savvy enough provide an exit route for
> such a device...on the C6 and certainly the C7. Seeing as this a
> factory et-al sort of chunk of kit:
>
> <http://www.amazon.com/Genuine-GM-Accessories-20929740-Battery/dp/B008FCCX9G>
>
>
> All cheap at half the price...

I'm glad that it's working out for Smarty and agree that if they are
going to put the charging port (actually, it's nothing more than an
"always on" power port inside the vehicle, there should be a way to
connect the damn thing so that you can lock up the car without having to
worry about crushing the power cord.

On my C5, obviously, the cord from the maintainer slips neatly beneath
the weather stripping at the cowl. I don't lock the hood since the car
is stored in a locked, alarmed garage but I could. I just lower it
gently assuring that the underhood light doesn't illuminate


> I find I haven't needed to keep my Z06 on a charger at all...expected to
> given some of the things I've read, but never had a problem with it's
> battery. Other than the fob...

Unless you lay the car up for months at a time (or weeks, in frigid
weather like we've had in the Midwest) you probably won't need it if
stored for less than 10-14 days at a time.

Still, there are enough Corvette fanatics who park their Vette's in
Mid-October never to move them again until April or...

I don't care who they are or where they are, if they leave the battery
in the car it will be DOA when they attempt to start it. Not to mention
the fact that they'll have that puzzled look on their face when they
start to notice seals leaking on the car.

Mine stays on the maintainer over the winter and gets a 10-15 mile run
about every month even over the winter. I just pick a clear, dry day
and go for it.

Lastly, I guarantee you that the Black & Decker and Schauer battery
maintainers I use on my car and lawn tractor are just as fine as
anything bearing the Corvette logo.

Rufus

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Jan 12, 2014, 1:09:48 AM1/12/14
to
Unquestionably Confused wrote:
> On 1/11/2014 9:38 PM, Rufus wrote:
>> Smarty wrote:
>>> On 1/11/2014 5:25 PM, Unquestionably Confused wrote:
>>>> On 1/11/2014 1:34 PM, Rufus wrote:
>>>>> ...I can only wonder if that one is really any different from this
>>>>> one -
>>>>>
>>>>> <http://www.corvettemods.com/Corvette-C6-GM-Battery-TenderCharger_p_5518.html>
>>>>>
>>>>>
>>>>>
> [snip]
>>
>> ...you'd think they'd have been savvy enough provide an exit route for
>> such a device...on the C6 and certainly the C7. Seeing as this a
>> factory et-al sort of chunk of kit:
>>
>> <http://www.amazon.com/Genuine-GM-Accessories-20929740-Battery/dp/B008FCCX9G>
>>
>>
>>
>> All cheap at half the price...
>
> I'm glad that it's working out for Smarty and agree that if they are
> going to put the charging port (actually, it's nothing more than an
> "always on" power port inside the vehicle, there should be a way to
> connect the damn thing so that you can lock up the car without having to
> worry about crushing the power cord.
>
> On my C5, obviously, the cord from the maintainer slips neatly beneath
> the weather stripping at the cowl. I don't lock the hood since the car
> is stored in a locked, alarmed garage but I could. I just lower it
> gently assuring that the underhood light doesn't illuminate
>

It would make even more sense to put it beside or behind the rear
license plate - given that they took the time to stick it under the C7's
hatch...jus' sayin'...

>
>> I find I haven't needed to keep my Z06 on a charger at all...expected to
>> given some of the things I've read, but never had a problem with it's
>> battery. Other than the fob...
>
> Unless you lay the car up for months at a time (or weeks, in frigid
> weather like we've had in the Midwest) you probably won't need it if
> stored for less than 10-14 days at a time.
>

True...grew up there, that's why I live in SoCal now. So I probably
drive my Z06 at least once every couple weeks. Mostly off the hi-dez
into LA and back. Or to Vegas...

> Still, there are enough Corvette fanatics who park their Vette's in
> Mid-October never to move them again until April or...
>

...but my '87 OTOH moves about once per quarter, max. I think I end up
charging it about twice a year on average.

> I don't care who they are or where they are, if they leave the battery
> in the car it will be DOA when they attempt to start it. Not to mention
> the fact that they'll have that puzzled look on their face when they
> start to notice seals leaking on the car.
>

In the desert it's generally heat that does a battery in - they tend to
last about three years on average, car/motorcycle/etc. in use or not.
We generally swap them out at the fist sign of balking -

> Mine stays on the maintainer over the winter and gets a 10-15 mile run
> about every month even over the winter. I just pick a clear, dry day
> and go for it.
>

I should do that more with my '87, but it pretty much just takes up
space these days...planning on trading it away soon anyway.

> Lastly, I guarantee you that the Black & Decker and Schauer battery
> maintainers I use on my car and lawn tractor are just as fine as
> anything bearing the Corvette logo.
>

Anything that gets the job done...no need to gold-plate it.

--
- Rufus

barry...@gmail.com

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May 13, 2014, 11:53:57 AM5/13/14
to
On Monday, January 6, 2014 11:47:28 AM UTC-5, Steve wrote:
> On or about Mon, 06 Jan 2014 11:09:22 -0500, Smarty
>
> <nob...@nobody.com> wrote or did cause to be written:
>
>
>
> >On 1/4/2014 10:51 AM, Steve wrote:
>
> >> On or about Fri, 03 Jan 2014 17:30:28 -0500, Smarty
>
> >> <nob...@nobody.com> wrote or did cause to be written:
>
> >>Or just use "On Star" to unlock your vehicle :)

RayDec

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Jul 2, 2014, 12:18:01 PM7/2/14
to
replying to Smarty , RayDec wrote:
My C7 came with the Battery Protection Package which included a GM Trickle
Charger (PART # 22969090). In the trunk area where the battery is located,
there&#39;s a cigarette lighter port which the charger connects to. No need
to get to the actual battery. Just plug into the lighter port and an
electrical outlet at the other end. I haven&#39;t used it yet but I assume
you have to leave the trunk lid opened. Hope this helps.

--
posted from
http://www.motorsforum.com/toyota_camry/--.htm
using MotorsForum's Web, RSS and Social Media Interface to
alt.autos.toyota.camry and other automotive groups

Smarty

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Jul 2, 2014, 11:26:57 PM7/2/14
to
On 7/2/2014 12:18 PM, RayDec wrote:
> replying to Smarty , RayDec wrote:
>> nobody wrote:
>>
>> Having owned C5 and C6 convertibles which have been stored for the
>> winter, I have become accustomed to using a trickle charger directly
>> connected to the battery for many years. The rest of the car has
>> been disconnected and only the trickle charger has been connected to
>> the battery. The new C7 battery is no longer under the hood. It is in
>> the trunk, and not as easily to disconnect and trickle charge. My
>> question: Can I trickle charge via the cigarette lighter socket or
>> another auxiliary power 12 V socket which the car also provides? Or
>> do I have to get into the trunk, remove the trunk lining, and then
>> connect directly across the battery as I have previously done for the
>> last 15 years on my C5 and C6? Any advice would be appreciated. Thanks.
>
>
> My C7 came with the Battery Protection Package which included a GM
> Trickle
> Charger (PART # 22969090). In the trunk area where the battery is
> located,
> there&#39;s a cigarette lighter port which the charger connects to.
> No need
> to get to the actual battery. Just plug into the lighter port and an
> electrical outlet at the other end. I haven&#39;t used it yet but I
> assume
> you have to leave the trunk lid opened. Hope this helps.
>
>
Thanks Ray. Yes, as my reply from 1/11/14 in this thread did reflect:

"For whatever it is worth, BTW, the CTEK charging through the trunk
auxiliary port is working out great. Very nice way to keep it charged.
The only very minor problem is to be sure the trunk lid is down far
enough to prevent the interior trunk lamps from illuminating / drawing
power, while at the same time not applying a lot of crushing force on
the CTEK cable which is coming out of the trunk to the charger. "

I hope you are enjoying your C7 as much as I am enjoying mine. GM hit a
real home run with this one!
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