electric problem
Race Director
Joined: Sep 2009
Posts: 11,338
Likes: 2,437
From: Eastern
If you let it sit for 3 weeks between starts, then it's pretty much normal for these cars. They have about 10 milliamp drain continuously when the car sits.
If you keep a phone charger cable, or I-Pod cable plugged in to the aux power, that will increase the drain.
If you don't drive the car that often, you had better invest in a Battery tender to keep the battery charged between starts.
I have added a PDF of the common parasitic power drains on the C6.
If you keep a phone charger cable, or I-Pod cable plugged in to the aux power, that will increase the drain.
If you don't drive the car that often, you had better invest in a Battery tender to keep the battery charged between starts.
I have added a PDF of the common parasitic power drains on the C6.
Pro
Joined: Mar 2011
Posts: 534
Likes: 33
From: Southern cali
Question -- Is this a manual transmission ? 2005 and early 2006 models had that weird requirement that you must place the shifter in reverse when not in operation or you will suffer excessive battery drain .
Racer
Joined: Aug 2008
Posts: 413
Likes: 22
From: Justin TX
1 . Charge the battery fully.
2. Pull the caps and pump some fluid from each cell in and out of the hydrometer a couple of times and the 3rd time allow the battery fluid to settle and count the floating *****. (Repeat for each cell)
3. On a good battery all the cells will be consistent with 4 or 5 ***** floating in each cell.
4. if one or more of the cells is significantly weaker only 1 or 2 ***** may be floating, this indicates a dead or weak cell (Replace Battery)
I about drove myself crazy on my 08, I had it to the dealer twice, Autozone on a few occasions, and AAA once, every one of them said the battery and charging system was good, but as in your case the car would let me down. I finally tested it with a hydrometer and found it had 2 weak cells, that was 2 years ago and no issues after replacing the battery. So much for those high tech testers, maybe old school but absolutely the best $2 I ever spent on my Vettes.
Team Owner
Joined: Apr 2013
Posts: 26,207
Likes: 4,329
From: Chirper Island
If the battery is still in warranty from wherever you bought it, I suggest you take it out of the car after it has gone dead the next time, and take it back to the auto parts store. Don't jump it and drive the car, where the battery will have just enough time to take a charge. If you do this, they will say " the battery is just fine, look it still has a charge". 
Take the dead battery to them, instead. They won't (or can't) take the time to charge it and say just the same. They will give you a new one.
And learn to park in Reverse ever after.
Take the dead battery to them, instead. They won't (or can't) take the time to charge it and say just the same. They will give you a new one.
And learn to park in Reverse ever after.
