Need help with Battery comparison

[jkok7 10+ year member]

I can get this for $105

Duralast/Marine battery - 12 months free replacement (27DP-DL) | | AutoZone.com

Weighs 54 lbs

CCA 800

CA 1000

Reserve 180 minutes

or

I can get this for $100

http://www.americanlisted.com/rhode_island_39/cars_2/exide_commercial_battery_led_acid_battery_4d_model_no_com-4d-p_new_19006_14332811.html]Exide Commercial Battery Led Acid Battery 4D model no. COM-4D-P new (19006) for Sale in Rhode Island Classifieds - AmericanListed.com[/color]

This one weighs close to 100 lbs

CCA 1000

CA 1200

Reserve 320 minutes

Neither are sealed. I'm trying to see if getting this Exide battery would be worth the extra weight. It's about twice as heavy as the Autozone Marine Batt.

I know I need a gel batt for secondary batt like Exstatic, Kinetik or XS Power, but am runnin a little low for the next month or so.

If all things are the same I'd rather cut the weight. What do yall think???

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[Dub7sonoma Premium Member]

Id go with the exide if you can fit it. The exide is rated a little over 200ah, the duralast is a little over 100ah. But the exide can be found new for right around $200

 

[jkok7 10+ year member]

Id go with the exide if you can fit it. The exide is rated a little over 200ah, the duralast is a little over 100ah. But the exide can be found new for right around $200

How'd you find out the AH on those? Thanks

 

[Dub7sonoma Premium Member]

How'd you find out the AH on those? Thanks

multiply the reserve capacity (rc) by .7 and it gets you really close. The duralast is 180*.7= 126ah and the exide is 320*.7=224ah

 

[jkok7 10+ year member]

multiply the reserve capacity (rc) by .7 and it gets you really close. The duralast is 180*.7= 126ah and the exide is 320*.7=224ah

Also if I don't play my system parked and always in drive, how much does that number matter?

Not being funny, it's an honest question.

 

[Dub7sonoma Premium Member]

Also if I don't play my system parked and always in drive, how much does that number matter?
Not being funny, it's an honest question.

The same parked as driving. The only difference is when you are driving your alternator will be putting out more with higher rpms.

 

[jkok7 10+ year member]

The same parked as driving. The only difference is when you are driving your alternator will be putting out more with higher rpms.

Ultimately the Exide will be giving alot more power to my amps than the duralast.

Subs are running off a Mmats D3500.1 wired down to 1 ohm.

 

[Dub7sonoma Premium Member]

Correct. Almost double

 

[Ahmed Johnson]

Ok, but when the car is running, isn't the alternator charging the amp? What does the higher ah rating mean for a car while it's driving?

 

[Dub7sonoma Premium Member]

When the car is running the alternator is charging the batteries and running the amp to a certain extent. Lets say your stock alternator has an output of 100 amps cold. Your car is going to use a lot of its output just to run. Once the amp draws more current than the alternator has left to put out, it pulling from the batteries

 

[Ahmed Johnson]

When the car is running the alternator is charging the batteries and running the amp to a certain extent. Lets say your stock alternator has an output of 100 amps cold. Your car is going to use a lot of its output just to run. Once the amp draws more current than the alternator has left to put out, it pulling from the batteries

When the amp is pulling power from the battery, does the amp see 14.4 volts or is it seeing 12 volts?

 

[jkok7 10+ year member]

When the car is running the alternator is charging the batteries and running the amp to a certain extent. Lets say your stock alternator has an output of 100 amps cold. Your car is going to use a lot of its output just to run. Once the amp draws more current than the alternator has left to put out, it pulling from the batteries

Aight man, I'm about to be running my yellow top up front and this Exide in the trunk off my stock alt which does 105 amps. Will I be okay for a while? I have a Mechman alt comin in couple weeks.

 

[jrdnhsnbrg 10+ year member]

Go big or go home... 50 extra pounds won't hurt anything unless you have an obnoxiously small car, ie Geo Metro. Nothing wrong with a Geo Metro though!

 

[Dub7sonoma Premium Member]

Aight man, I'm about to be running my yellow top up front and this Exide in the trunk off my stock alt which does 105 amps. Will I be okay for a while? I have a Mechman alt comin in couple weeks.

Don't push it too hard. Just watch your voltage. If its starts to drop, just back off a little bit.

 

[jkok7 10+ year member]

Yeah I'll be careful with the gain and volume. Thanks!