FFHdriver Report post Posted March 5, 2010 (edited) I searched but couldn't find a comment on this. After several miles of driving my battery "eye" is black/opaque, colored. Everything on the car works normally. What is causing this and should I have it checked? Several days ago I could see something red in the glass. At other times it's been green. Car has about 4500 miles. TIA Edited March 5, 2010 by FFHdriver Quote Share this post Link to post Share on other sites
rpreuss Report post Posted March 5, 2010 I searched but couldn't find a comment on this. After several miles of driving my battery "eye" is black/opaque, colored. Everything on the car works normally. What is causing this and should I have it checked? Several days ago I could see something red in the glass. At other times it's been green. Car has about 4500 miles. TIA There are discussions on this. May be on other forums. But anyway.... Mine has been red since I first noticed it about a week after I picked up the car. It was a demonstrator with about 45 miles on it. I know from a Delco Marine Battery I had that, at least on THAT battery, it measured the specific gravity of the electrolyte (Water/Sulphuric Acid) to indicate the charge of the battery. The Delco was a Deep Cycle battery for a trolling motor. Designed to be almost fully discharged every time. So, when I saw the red dot, I mentioned it at the dealership. They "tested it" and it passed, so they would not replace it. I tested it (Head lights on for 15 minutes or so) and the voltage never dropped below 11.5. So, since it does not have to crank the engine over but just engage the relay on the "Big Battery" I say WTF. Some day, I plan on finding my Dad's old specific gravity tester and removing one of the caps on the battery and seeing if there really is a problem or if the red dot is just screwed up. Quote Share this post Link to post Share on other sites
Oman Report post Posted March 5, 2010 Mine is green and has been green the whole time I have had the car. They are supposed to be green all the time. I don't know if there is an issue with the indicators on some batteries, a problem with some batteries, or some other charging system issue.\ Jon There are discussions on this. May be on other forums. But anyway.... Mine has been red since I first noticed it about a week after I picked up the car. It was a demonstrator with about 45 miles on it. I know from a Delco Marine Battery I had that, at least on THAT battery, it measured the specific gravity of the electrolyte (Water/Sulphuric Acid) to indicate the charge of the battery. The Delco was a Deep Cycle battery for a trolling motor. Designed to be almost fully discharged every time. So, when I saw the red dot, I mentioned it at the dealership. They "tested it" and it passed, so they would not replace it. I tested it (Head lights on for 15 minutes or so) and the voltage never dropped below 11.5. So, since it does not have to crank the engine over but just engage the relay on the "Big Battery" I say WTF. Some day, I plan on finding my Dad's old specific gravity tester and removing one of the caps on the battery and seeing if there really is a problem or if the red dot is just screwed up. Quote Share this post Link to post Share on other sites
FFHdriver Report post Posted March 5, 2010 Mine is green and has been green the whole time I have had the car. They are supposed to be green all the time. I don't know if there is an issue with the indicators on some batteries, a problem with some batteries, or some other charging system issue.\ JonDealer ran a load test on the battery and it checked good. Battery checked 12v with engine off and 14 with ICE running. I'm not worrying about the color anymore. Quote Share this post Link to post Share on other sites