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Battery Protection package

8367 Views 34 Replies 13 Participants Last post by  Buzzardz_vette
Have not seen anything mentioned about this more 'utilitarian' option available for the C7.

Paying $100 for an automatic battery maintainer (ERI)... specifically designed (?) to plug into the rear accessory power port on a C7 seemed like a good idea. That would mean to me, that it's been well thought out and ready to go (that's why I ordered it, while I already had two battery tenders in the garage). My suspicion is, that no one tried hooking the thing up (prior to production), in the fashion that most Corvette owners would use it. The power unit has two holes in it's base, obviously designed to fasten the unit to a wall next to your pride and joy. Thought this was a great idea! Made a one foot long wooden mounting pad to put onto studs in the garage, so I could attach to the wall next to the hatch. Power cord was of sufficient length... but the cord from the charger to the car was not quite thought though. They must have forgotten that owners who 'rest' their cars during sloppy winter weather (all of you in the northern states and provinces know who you are)... use a CAR COVER (mine is a 'dust proof', from California Covers). That cord, when plugged into the car, and draped out from under the bottom of the cover, means that the charger body has to be within about two feet of the car... this had me mounting the unit about ten inches from the floor, with a loop of wire about six inches off the floor. If that sounds like a tripping hazard to you... you are right. After snagging myself three times walking around the car, I remedied the problem by splicing in about five and a half feet of additional wire. Now I've got the unit up at around four feet (where I can easily see the charge status over the car) and have the cord to the car laying flat on the garage floor (no longer a tripping hazard).

Used 16 gauge stranded wire, wrapped, soldered connections, and used shrink tube on the joints and then larger tube over the whole thing. NOTE TO GM: Increase the length of the charging cord by at least five feet.

I could pass as an electrician (although worked in mechanical/piping system design for about 42 years), but not as an electrical designer... so I'm just assuming I've not affected the operation of the charger (in some crazy 'impedence' kind of way, or something).
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I have seen this too....a small sign attached to jewelry chain that hangs on steering wheel when using charger.....sign says "charger connected"
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I'll have to ask one of our mechanics if he can find a spare red "Remove before Flight" tag from the shop.


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I'll have to ask one of our mechanics if he can find a spare red "Remove before Flight" tag from the shop.


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Wish I had that option, instead I made up bright yellow arrows about 8 inches long that I stick in between the driver window and frame when I have the CTEK attached. I use it on my and my wife's cars. It's worked every time :cool:

Yellow Text Font Sign Signage
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Not completely convinced the CTEK is necessary for my Stingray. Need comments from you other owners.
Not completely convinced the CTEK is necessary for my Stingray. Need comments from you other owners.
I think you will find the answer depends entirely on how often you will drive it, or maybe more specifically; How much down time will it have between drives?
Not completely convinced the CTEK is necessary for my Stingray. Need comments from you other owners.
Carl there has been a good discussion already here on the forum. If you would like further information I suggest you do some internet reading on CTEK and other chip driven maintainer systems. You are the only person who knows how you drive- frequent short trips versus longer runs, how long you park your car without driving, your experience with longevity in other modern car batteries, etc.
I had driven away with the charger attached the C5 that I owned... always tried to be real careful about paying attention (with signs on the windshield and such). Guess it was a 'short attention span' senior moment! Fortunately, the charger had a coupling just where the wire came out from under the hood (which was not even closed completely) and it just unplugged itself without doing any damage to anything. I was out for a short errand, and didn't even notice what I'd done until returning home!!!

I had bought a 'remove before flight' keychain at an AirVenuture a few years ago... but never really figured a good place to put it with a cover on the car... attached to the steering wheel would be an excellent idea, as suggested. If you search on 'remove before flight', you'll find a LOT of them for sale on the Internet. I've got mine on my shed key (along with the Dale Earnhardt lanyard) right now.... but will have to repurpose back into use for the Stingray, since my setup no longer contains a connector to save me should I be forgetful again.
Leash Fashion accessory Strap Material property Label
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Just route the power cable through a crack in the drivers window and there will be no way to forget to remove it.
John, just a thought: The extension from Amazon has a round cord, while the cord on the CTEK 3300 (and CTEK made for GM) are flat. My guess is that the flat cord sits better with the trunk seal than the round one might. You might want to consider using a regular extension if you need the length at the plug end of the unit instead. The total reach of the CTEK 3300 is over 13 feet (6 feet from the unit to the accessory end, the unit itself, and then a bit more than 6 feet from the unit to the end of its power cord).
You could always use this one. It's a lot longer and flat.

Prime Products 08-0917 12 V 25' Extension Cord : Amazon.com : Automotive

Product Fuel line Technology Cable Coaxial cable
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Do all C7s have a rear accessory port? Can I use my existing battery tender or do you need to buy the $100 option for it to work?
Do all C7s have a rear accessory port? Can I use my existing battery tender or do you need to buy the $100 option for it to work?
Yes all C7s have the accessory port at the rear right of the trunk. It is live when the car is off (unlike the front accessory port which is only live while the car or accessory setting is on, but will go off once the door is opened ).
I purchased the Prime Products extension, left driver side window down about 1/4 inch and ran cord out. Works great and assures I won't drive off with charger connected.

John V
Yes all C7s have the accessory port at the rear right of the trunk. It is live when the car is off (unlike the front accessory port which is only live while the car or accessory setting is on, but will go off once the door is opened ).
Thx jsvette,

I guess I can just plug in my good old tender, seems too simple! And weird how I'm not having to spend any more money on this vette
Thx jsvette,

I guess I can just plug in my good old tender, seems too simple! And weird how I'm not having to spend any more money on this vette
Give it a few more days and I'm sure you'll find something to spend your money on. You never have enough "stuff" to add to the vette.....;-)
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