Visit The Dirt Forum for More Information

Author Topic:   battery
Dirt Freak

Total posts: 334
posted October 05, 2005 02:32 PM  
What battery is everyone using for their mod?

How many of you use an altenator?


Racer X
Dirt Freak

Total posts: 256
posted October 05, 2005 03:03 PM  
Optima,no alternator.

Dirt Freak

Total posts: 334
posted October 05, 2005 03:16 PM  
which one?


Dirt Freak

Total posts: 318
posted October 05, 2005 03:20 PM  
we use the red top, you can get them right at autozone

Dirt Maniac

Total posts: 155
posted October 05, 2005 04:15 PM  
same here, got it autozone.

Fastride 38
Dirt Maniac

Total posts: 125
posted October 05, 2005 05:01 PM  
Dry Cell...Interstate...No Alternator

Dirt Forum Champ
Total posts: 753
posted October 05, 2005 05:56 PM  
yellow top optima

no alt.

[This message has been edited by FlyNLoIMCA17 (edited October 05, 2005).]

Dirt Newbie

Total posts: 2
posted October 05, 2005 07:55 PM  
yellow top for me as well. Had one of those Exide Orbital and it just quit on me at the track with no warning.

Dirt Roller

Total posts: 22
posted October 05, 2005 08:48 PM  
Interatate megatron. no alternator

Dirt Forum Champ
Total posts: 2007
posted October 06, 2005 05:50 AM  
red top no alternator

Dirt Maniac

Total posts: 177
posted October 06, 2005 05:59 AM  
red top optima with a racemate waterpump/alternator problems in 6 years with the racemate.

Dirt Full Roller

Total posts: 31
posted October 10, 2005 03:22 AM  
we run a yellow top w/ additional 6 volt motorcycle batt then ya don't need an alt. B.K.

Dirt Freak

Total posts: 334
posted October 10, 2005 01:29 PM  
It looks like the Red Top batteries can be bought with higher cranking amps (720, 800). The Yellow Top is a deep cycle though, which since I don't run an alternator, seems like it would be a good choice for the constant re-charging...but less cranking amps (650, 750).

Dirt Forum Champ
Total posts: 2007
posted October 10, 2005 01:39 PM  
youll need the cranking amps to help get the thing turned over to start.

Check out the reserve time on the batteries. I am not sure what the opptima red top is but most are around 120 minutes. That means they will put out 12 volts when subjected to a 15 amp (I think, you'd have to double check this) load for 120 minutes. Your car when running doesn’t draw anything like 15 amps just to run the ignition so you can see a good battery will power your car fine if you keep it maintained from night to night. Granted ea time you start it it takes a much bigger draw of power but unless you do a lot of cranking or starting you shouldn’t have any trouble in a normal night.

We typically will put a trickle charger on sometime during the week and keep it maintained and then again on raceday to make sure it is fully charged. Never had troubles.

Dirt Full Roller

Total posts: 48
posted October 10, 2005 02:01 PM  
I have a 13-1 motor and use a reverse mount mini starter and have no problem turning the motor over. I also trickle charge it every week as well. I have been worried about not discharging the battery enough. After one night of racing the battery needs very little charging. I am considering getting a couple of headlights and running the battery all the way down. Has anybody else noticed this type of thing with the deep cycle batteries?

Dirt Forum Champ
Total posts: 753
posted October 10, 2005 04:43 PM  
yes, my optima yellow top, doesn't need much charging after the race. I put a 2 amp charger on it, usually the day before I race. I have been told its not good on a deep cycle to recharge before its dead, but I've been running it this way for about 4 or 5 years and never have had a problem!

Also I'm not sure the cranking amps on the yellow top but for about a half a season last year I didn't have a clutch, just a coupler. I run a saginaw 3-speed and a 388 chevy, according to the calculator on this site my engine has 14:1 compression ( I think its cloaer to 12.5)but anyways I was having to start the car in gear and go. So the yellow top done fine, thats a lot of load on a battery to start in gear like that.

Dirt Freak

Total posts: 270
posted October 11, 2005 08:36 AM  
We run a deep cycle battery and warranty it every year.We have run the Optimas but they weigh twice as much and cost that too.
No alternator and we charge every week at home.This has worked fine. The problem is they don't hold up too well after hard contact.

Malibu Man
Dirt Roller

Total posts: 17
posted October 12, 2005 06:03 PM  
yellow optima

1100 cranking amps
155 reserve minutes

Ive ran two day shows and not re charged and still it hasnt dropped below 12.5 volts...

summit and jegs has it in their books, its the highest reserve and cranking available.

weighs 62 lbs.

Back to the Archives