Battery issue
Thread Starter
Burning Brakes
Joined: Jul 2007
Posts: 753
Likes: 47
From: Clearfield Utah
Battery issue
I was in the car with the battery tender installed and spent about an hour and half studying the manual and figuring out the infotainment system - all of a sudden no power. Could I have run the battery down and the tender couldn't keep up? I will check battery voltage in the morning. It is the original battery (2019 C7). Do you think it was just it's time? I keep it on a tender whenever its not being driven (3300 miles on the clock). Thanks for the incoming advice.
Race Director
Joined: Aug 2015
Posts: 12,252
Likes: 4,742
From: SE WI
My battery tenders both have a 1.25 amp charge rate which should keep up with any power needs while in aux mode so that part is a little weird. But I agree that it's time for a new battery. I just replaced a battery that was installed on March/2019. It was on its way out last fall with sluggish cranking. Then this spring after being on a tender all winter couldn't even start the car. Measured 10.9 volts after the start attempt. Before I disconnected the tender, it showed green light in maintenance mode. Looked fine according to the tender but it was done.
Navigator
Joined: Jul 2024
Posts: 9
Likes: 5
From: Apollo Beach, Florida
As others have mentioned, it's time for a new battery. In my experience, the battery will drop dead with little or no warning. I've it happen in both my C5 and my C7. Even happened when I was at a client one time. Now I replace them after about 4 or 5 years so I don't get stranded somewhere.
Thread Starter
Burning Brakes
Joined: Jul 2007
Posts: 753
Likes: 47
From: Clearfield Utah
Team Owner
Joined: Sep 2000
Posts: 25,009
Likes: 2,707
From: Far NW 'burbs of Chicago
St. Jude Donor '13
^^^^^
Your car was due for a new battery, but the but also-
The Accessory and Retained Accessory Power positions have timers that restart every time you do certain things. It's possible that yours simply "timed out".
Your car was due for a new battery, but the but also-
The Accessory and Retained Accessory Power positions have timers that restart every time you do certain things. It's possible that yours simply "timed out".
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Thread Starter
Burning Brakes
Joined: Jul 2007
Posts: 753
Likes: 47
From: Clearfield Utah
timed out
From what I know - when the CTEK battery charger is in use it will keep the accessory power on as long as the battery is charged to begin with. With an old battery a full charge can not be maintained and then the battery fails. With that being possible and a 6 year old battery, I just replaced the battery and all is good.