Ctek 3300
Team Owner
Joined: Feb 2008
Posts: 30,693
Likes: 11
From: Ocala FL
Many here use the CTEK, including myself, and I have never heard of a problem. Some use the normal alligator clips, some use the cigarette lighter plug, and some just attach the quick connect leads to the battery. All choices seem to work equally well.
Safety Car
Joined: Oct 2005
Posts: 3,775
Likes: 19
From: Santa Clara, CA
I have one and it works great. I clip it to my battery once a month and when I am out of town. I still have the factory battery which was installed almost four years ago. Early on I killed the battery 5 times with a bad MP3 converter unit. Still, all is well. 
Instructor
Joined: Sep 2007
Posts: 248
Likes: 0
From: Marietta OK
Safety Car
Joined: Oct 2003
Posts: 4,024
Likes: 13
From: Loveland CO to Central Coast CA
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Burning Brakes
Joined: Nov 2004
Posts: 1,161
Likes: 1
From: North Carolina
St. Jude Donor '06-'07-'08
I use one as I don't drive my Vette every day and sometimes I don't drive it for weeks. I think the trickle charger works great and even though I use a Priority Start I don't have to worry about resetting all the settings for the seats etc.
Melting Slicks
Joined: May 2007
Posts: 3,248
Likes: 767
From: Lindenhurst, IL
It's a great little charger that works really well.
I've had trouble getting a good connection with the cheap clamps that they supply.
You know when you don't have a good connection because charging LED indicator flashes rapidly.
So, I hard-wired mine with the included wire connectors.
Works perfectly now.
I've had trouble getting a good connection with the cheap clamps that they supply.
You know when you don't have a good connection because charging LED indicator flashes rapidly.
So, I hard-wired mine with the included wire connectors.
Works perfectly now.
Great product! 
Heel & Toe
Joined: Jul 2008
Posts: 19
Likes: 0
From: Ames Iowa
I have both CTEK 3300s and Schumacher battery tenders and have used both types on my C6 and other vehicles. Both have worked very well on everything from the C6 to farm and lawn tractors with no problems. The Schumacher is available at Walmart for just under $20 so is considerably less costly than the 3300. So far I have not been able to see any difference between them for performance.
Pro
Joined: Dec 2007
Posts: 670
Likes: 0
I too thought the same until I read the manual and found out the alternator kicks in only when you have left impulse speed. Check out the manual, it's on page 51, in the area 7 section.