Battery and Noise ???
Thread Starter
Instructor
Joined: Jun 2007
Posts: 179
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From: Guntersville Alabama
Battery and Noise ???
Well I guess it is my turn to deal with a battery issue. For years I have replaced my battery's in all of my vehicles every third year, don't care it if is needed ( and usually is not) or not. I simply do not want to deal with that dead battery thing out on the road or for certain in my wifes car. The simple way has always been just replace them on a schedule of my own.
Last year I bought this new to me C5 and have not driven it much at all as the weather has been just to iffy. the car has sat for at least 6 weeks and maybe even a couple of weeks longer than that with out any attention at all. today here in Bama it is 70 degrees, I had a Doctor Appointment today up in Huntsville and thought I would drive the Vette the 100 or so mile round trip. Well of course the damn thing was dead, just 10 days ago it was 6 degrees, so we have had some very cold weather. it being dead is not the problem as I planned on replacing it as soon as the weather got to were I could start driving it more.
The problem was when I hooked a charger up to it. There was a thumping or maybe knocking sound coming from low down on the passenger side of the engine compartment, somewhere around the front of the engine I think. Has to be electric in some way as it came and went when I turned the charger on and off. Any of you guys have a clue what this could be? Maybe someone has seen or heard of this before.
Roland
Last year I bought this new to me C5 and have not driven it much at all as the weather has been just to iffy. the car has sat for at least 6 weeks and maybe even a couple of weeks longer than that with out any attention at all. today here in Bama it is 70 degrees, I had a Doctor Appointment today up in Huntsville and thought I would drive the Vette the 100 or so mile round trip. Well of course the damn thing was dead, just 10 days ago it was 6 degrees, so we have had some very cold weather. it being dead is not the problem as I planned on replacing it as soon as the weather got to were I could start driving it more.
The problem was when I hooked a charger up to it. There was a thumping or maybe knocking sound coming from low down on the passenger side of the engine compartment, somewhere around the front of the engine I think. Has to be electric in some way as it came and went when I turned the charger on and off. Any of you guys have a clue what this could be? Maybe someone has seen or heard of this before.
Roland
Le Mans Master
Joined: Sep 2013
Posts: 8,900
Likes: 1,074
From: Wisconsin
Well I guess it is my turn to deal with a battery issue. For years I have replaced my battery's in all of my vehicles every third year, don't care it if is needed ( and usually is not) or not. I simply do not want to deal with that dead battery thing out on the road or for certain in my wifes car. The simple way has always been just replace them on a schedule of my own.
Last year I bought this new to me C5 and have not driven it much at all as the weather has been just to iffy. the car has sat for at least 6 weeks and maybe even a couple of weeks longer than that with out any attention at all. today here in Bama it is 70 degrees, I had a Doctor Appointment today up in Huntsville and thought I would drive the Vette the 100 or so mile round trip. Well of course the damn thing was dead, just 10 days ago it was 6 degrees, so we have had some very cold weather. it being dead is not the problem as I planned on replacing it as soon as the weather got to were I could start driving it more.
The problem was when I hooked a charger up to it. There was a thumping or maybe knocking sound coming from low down on the passenger side of the engine compartment, somewhere around the front of the engine I think. Has to be electric in some way as it came and went when I turned the charger on and off. Any of you guys have a clue what this could be? Maybe someone has seen or heard of this before.
Roland
Last year I bought this new to me C5 and have not driven it much at all as the weather has been just to iffy. the car has sat for at least 6 weeks and maybe even a couple of weeks longer than that with out any attention at all. today here in Bama it is 70 degrees, I had a Doctor Appointment today up in Huntsville and thought I would drive the Vette the 100 or so mile round trip. Well of course the damn thing was dead, just 10 days ago it was 6 degrees, so we have had some very cold weather. it being dead is not the problem as I planned on replacing it as soon as the weather got to were I could start driving it more.
The problem was when I hooked a charger up to it. There was a thumping or maybe knocking sound coming from low down on the passenger side of the engine compartment, somewhere around the front of the engine I think. Has to be electric in some way as it came and went when I turned the charger on and off. Any of you guys have a clue what this could be? Maybe someone has seen or heard of this before.
Roland
Thread Starter
Instructor
Joined: Jun 2007
Posts: 179
Likes: 0
From: Guntersville Alabama
8VETTE7, That was it thanks man! by the way E-7 what?
JR-01 & 8Vette7 both
Guys I truly feel like a dumb *** for not doing those very things. either disconnecting the Battery or using a tender. It wouldn't be so bad if I didn't own the three battery tenders I have setting on the work bench. You know I felt like "It won't happen to me" I never though the car would end up setting that long, so I just didn't do either one. BAD Roland-BAD Roland..
Roland
JR-01 & 8Vette7 both
Guys I truly feel like a dumb *** for not doing those very things. either disconnecting the Battery or using a tender. It wouldn't be so bad if I didn't own the three battery tenders I have setting on the work bench. You know I felt like "It won't happen to me" I never though the car would end up setting that long, so I just didn't do either one. BAD Roland-BAD Roland..
Roland
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Good info - keeping this for later reference.
Le Mans Master
Joined: Mar 2011
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From: Columbia SC
NEVER EVER charge a dead battery in a C5 if it is fully connected!!!!!!!!!!!!!!!!!!!!!!!!!!!
You MUST at least disconnect the negative terminal first (recommended over the positive for safety reasons in all cars).
A charger converts AC to DC. This produces a DC square wave and not a "true" DC voltage/current. A good battery can filter this out. A dead battery can let a lot of it through. The electronics in the modules do not like DC square waves and you can damage them. Based on the charger quality you could have a good bit of AC ripple carried thru also, which is not good.
Trickle chargers are OK since they are used to maintain a good charged battery.
You MUST at least disconnect the negative terminal first (recommended over the positive for safety reasons in all cars).
A charger converts AC to DC. This produces a DC square wave and not a "true" DC voltage/current. A good battery can filter this out. A dead battery can let a lot of it through. The electronics in the modules do not like DC square waves and you can damage them. Based on the charger quality you could have a good bit of AC ripple carried thru also, which is not good.
Trickle chargers are OK since they are used to maintain a good charged battery.
