| Author |
Message |
James Selevan (Jselevan)
Member
Username: Jselevan
Post Number: 664
Registered: 6-2002
| | Posted on Wednesday, July 09, 2003 - 4:40 pm: | |
Drew - there should be no current drain with the key off, with the exception in older cars of the clock. In modern cars, the clock and radio will have a 10 year Lithium battery that maintains memory of time and channels. In a Daytona, the clock should draw 50 milliamps maybe.
Jim S. |
Drew Altemara (Drewa)
Junior Member
Username: Drewa
Post Number: 167
Registered: 2-2002
| | Posted on Wednesday, July 09, 2003 - 4:32 pm: | |
Hi guys.
Say I have a question here which I've never really understood.
Why is there a current drain with nothing on? Is this just the current drain from the battery through the rubber tires to the ground that is completing the circuit? |
David Feinberg (Fastradio2)
Junior Member
Username: Fastradio2
Post Number: 243
Registered: 4-2002
| | Posted on Monday, July 07, 2003 - 5:01 pm: | |
Coachi,
Measuring current drain is very simple....
First, you'll need a multimeter capable of reading milliamps...
Second, close all vehicle doors (interior lights off)...and remove engine compartment light bulb is so equipped.
Disconnect either battery cable (only one)
Set multimeter to the 1 amp, or higher scale.
Connect leads of multimeter in series with the battery post and the cable you previously disconnected. If the meter reads a negative value, reverse the multimeter leads...Turn the scale down on the multimeter until you've got a mid-scale reading....Ideally the draw should be 50ma, or less...
|
Dr. I. M. Ibrahim (Coachi)
Member
Username: Coachi
Post Number: 308
Registered: 5-2002
| | Posted on Monday, July 07, 2003 - 3:50 pm: | |
how do you measure drain when car ignition etc...are off? Advice please |
William Badurski (Billb)
Junior Member
Username: Billb
Post Number: 190
Registered: 6-2001
| | Posted on Saturday, July 05, 2003 - 10:51 pm: | |
I agree with the current drain advice. I've used a variety over the past 25 years, including AC Delco, Champion, Exide, etc. They all lasted 5-6 years. |
James Selevan (Jselevan)
Member
Username: Jselevan
Post Number: 643
Registered: 6-2002
| | Posted on Saturday, July 05, 2003 - 10:45 pm: | |
Coachi - there is not much to a lead acid battery. The only critical mistake is getting one that does not have the correct terminal connectors, and is not the correct dimension. Other than that, it's amp hours. Find the least expensive that meets those criteria.
Jim S. |
Dr. I. M. Ibrahim (Coachi)
Member
Username: Coachi
Post Number: 306
Registered: 5-2002
| | Posted on Saturday, July 05, 2003 - 9:50 pm: | |
Very possible that I might have a drain...I will check ma. I hope i find out what is causing the batteries to die. In any case, other than Interstate, what other batteries is anyone using for a daytona? |
Steve Magnusson (91tr)
Intermediate Member
Username: 91tr
Post Number: 1946
Registered: 1-2001
| | Posted on Saturday, July 05, 2003 - 2:37 pm: | |
Coach -- As Jim's post suggests, have you tried measuring the current drawn from the battery with (supposedly) everything "off"? I'm having a vague recollection that it shouldn't be more than something like 25~50 mA or so. |
James Selevan (Jselevan)
Member
Username: Jselevan
Post Number: 639
Registered: 6-2002
| | Posted on Saturday, July 05, 2003 - 11:31 am: | |
Just a thought - but I was having the same difficulty in my C4 until I found that the trunk light was not going off when closed.
Jim S. |
Henryk (Henryk)
Member
Username: Henryk
Post Number: 874
Registered: 8-2001
| | Posted on Saturday, July 05, 2003 - 10:13 am: | |
It seems fairly obvious to me that you have a battery drain somewhere. I use Interstate batteries in my Ferraris......can let them sit for months....they fire right up.....and I'm off. |
Dr. I. M. Ibrahim (Coachi)
Member
Username: Coachi
Post Number: 304
Registered: 5-2002
| | Posted on Saturday, July 05, 2003 - 9:36 am: | |
I have replaced far too many batteries in my Daytona. Several Interstate then DieHards...all you have to do is forget to disconnect the battery after a drive, or forget to put the charger on it. Can anyone recommend a better more lasting battery for the 365 GTB/4 ? It would be nice to be able to find a battery where the original battery hold down would work.... |