What is "Normal" for the DIC to read?
Thread Starter
Race Director
Joined: Oct 1999
Posts: 13,298
Likes: 14
From: Somers NY
What is "Normal" for the DIC to read?
I have an 05 Automatic...I drag race it almost every weekend during racing season (March-Nov) I have a switch to run the fan when the motor is off to cool the engine between runs...
My OEM battery had not given me any problems, but AFTER I installed the switch to run the fan, I thought being my battery was 3 yrs old (at the time) I'd get a new one.. I got the (Optima Yellow Top Mod 34)
Since I got it, my DIC reads 14.5 volts all the time... with the OEM battery it would start reading 14.5 then eventually go to 14.1 volts
When the car sits more than a week I put the battery Tender on so it should be fully charged...
I'm just wondering if it should read that high 14.5 even after its been on a Battery Tender for a week...
After a day at the track, if I make 6-10 runs, I usually run the fan for app 10-15 min after each run with the motor OFF.. So I KNOW the battery is not fully charged after a day of racing, BUT to get home I have a 100 mile drive, & I'm pretty sure that should recharge the battery to 100% but it still reads 14.5
Ya think this normal... BTW I have NEVER had a dead battery.. I guess the saying "If it Ain't Broke, Don't Fix It" holds true...
My OEM battery had not given me any problems, but AFTER I installed the switch to run the fan, I thought being my battery was 3 yrs old (at the time) I'd get a new one.. I got the (Optima Yellow Top Mod 34)
Since I got it, my DIC reads 14.5 volts all the time... with the OEM battery it would start reading 14.5 then eventually go to 14.1 volts
When the car sits more than a week I put the battery Tender on so it should be fully charged...
I'm just wondering if it should read that high 14.5 even after its been on a Battery Tender for a week...
After a day at the track, if I make 6-10 runs, I usually run the fan for app 10-15 min after each run with the motor OFF.. So I KNOW the battery is not fully charged after a day of racing, BUT to get home I have a 100 mile drive, & I'm pretty sure that should recharge the battery to 100% but it still reads 14.5
Ya think this normal... BTW I have NEVER had a dead battery.. I guess the saying "If it Ain't Broke, Don't Fix It" holds true...
Last edited by jpee; Feb 11, 2010 at 11:49 PM.
Instructor
Joined: Mar 2009
Posts: 119
Likes: 0
From: Fort Worth Texas
I got the (Optima Yellow Top Mod 34)
Since I got it, my DIC reads 14.5 volts all the time... with the OEM battery it would start reading 14.5 then eventually go to 14.1 volts
When the car sits more than a week I put the battery Tender on so it should be fully charged...
I'm just wondering if it should read that high 14.5 even after its been on a Battery Tender for a week...
Since I got it, my DIC reads 14.5 volts all the time... with the OEM battery it would start reading 14.5 then eventually go to 14.1 volts
When the car sits more than a week I put the battery Tender on so it should be fully charged...
I'm just wondering if it should read that high 14.5 even after its been on a Battery Tender for a week...
Your battery is showing a more consistent voltage without fluctation, holding a charge, I don't get what you're asking
Thread Starter
Race Director
Joined: Oct 1999
Posts: 13,298
Likes: 14
From: Somers NY
I hope I was able to explain myself better...my thought is if the battery is NOT fully charged it will take the full 14.5 volts to get to peak charge, but once (it IS AT 100)% it would only take 14.0 or 13.8 just to "Maintain" the full charge it has...
Last edited by jpee; Feb 12, 2010 at 09:57 AM.
Thread Starter
Race Director
Joined: Oct 1999
Posts: 13,298
Likes: 14
From: Somers NY
With engine running... next time I get in the garage I'll check it with the engine NOT runninh.... I'm guessing it should be 11.xx or in that area..
Melting Slicks
Joined: Sep 2007
Posts: 2,597
Likes: 3
From: READING PA
St. Jude Donor '08-'09-'10
trimming back after the battery comes up to full charge.
Burning Brakes
Joined: Jun 2007
Posts: 878
Likes: 145
From: Little Egypt, USA
Put an accurate volt meter on the battery terminals while the engine is running and compare to the DIC. It only matters that the true voltage at the battery is with in spec, not what the DIC says.
Thread Starter
Race Director
Joined: Oct 1999
Posts: 13,298
Likes: 14
From: Somers NY
Good idea... I will do that and see what kind of #'s I get or how the DIC compares to the volt meter
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