4 batcap 800s vs 1 pm d3100

[Lil Poot 5,000+ posts]

alt case is grounded to the chassis.

 

[Buck 5,000+ posts]

I would go with batcaps, but that's just me.

 

[loopkiller 10+ year member]

alt case is grounded to the chassis.

Try adding another wire from the alt case directly to the front battery NEG- post. See if that helps. That would be a more direct path for all of your grounds to get back to the alt.

 

[AudioXtremes 10+ year member]

IMO I would ditch the small yellow top for a powermaster that fits up front. Also add another power wire.

 

[JEXTEL 10+ year member]

if your voltage is in the high 12's..ill say the d3100 is doing its job..

i know iknow we all want the perfect voltage but if your not in the 11's and your in the high 12's thats pretty **** good off of one battery in the rear..ALSO i bet that 5kwrms rating is on a burp...

far as the batcaps vs PM cant you get 2 batcap 2000 for about the same price as a d3100? (talk to ray over at batcap he'll hook you up)

or if you wanna run all PM's just get another d3100..BUT a good rule of thumb is ever battery added means you add about .1-.3 volts to you lowest burp voltage...

and also i agree with the others on adding more runs of 1/0

 

[Lil Poot 5,000+ posts]

if your voltage is in the high 12's..ill say the d3100 is doing its job..
i know iknow we all want the perfect voltage but if your not in the 11's and your in the high 12's thats pretty **** good off of one battery in the rear..ALSO i bet that 5kwrms rating is on a burp...

far as the batcaps vs PM cant you get 2 batcap 2000 for about the same price as a d3100? (talk to ray over at batcap he'll hook you up)

or if you wanna run all PM's just get another d3100..BUT a good rule of thumb is ever battery added means you add about .1-.3 volts to you lowest burp voltage...

and also i agree with the others on adding more runs of 1/0

just curious, what type of voltage drops do you see at full tilt, idle and driving with that setup?

 

[atlbraves]

1/0 can handle 300amps of power you are running around 5k watts so roughly 500amps

throw another run of 1/0 to the back and another 1/0 ground in the rear for a total of 2 power and 2 grounds should help voltage. but doing 3 or 4 for 4-5k watts wont do much once you are at the limit of runs per amps it wont do much

1 run per 300amps you can be on the safe side and do one run per 250amps either way

 

[loopkiller 10+ year member]

1/0 can handle 300amps of power you are running around 5k watts so roughly 500amps
throw another run of 1/0 to the back and another 1/0 ground in the rear for a total of 2 power and 2 grounds should help voltage. but doing 3 or 4 for 4-5k watts wont do much once you are at the limit of runs per amps it wont do much

1 run per 300amps you can be on the safe side and do one run per 250amps either way

I doubt you will ever hit a full 500a draw, but you might get close to 450a. If you use an 80% efficiency figure and you use the 5000W and 14.4v as a guide, then you are pulling 434a.

I would like to join the additional 1/0 run bandwaggon. Looks like a party on this bus! //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

 

[audiolife 5,000+ posts]

thats what i have now, one 1/0 gauge wire connecting the 2 batteries at both positive and negative terminals, plus a 1/0 ground to chassis at both front and rear.
i meant should i have 2 1/0 grounds to chassis at the rear battery, and run a second 1/0 lead connecting the positive terminals?

double the power run double your grounds which would should include a second run of negitive up front.

 

[Lil Poot 5,000+ posts]

i'll go ahead and double up the 1/0 all around, for the big 3 too. looks like i'm gonna need a couple of 50 ft 1/0 spool //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

the wire i have right now is some cheap *** welding wire, i figure if i'm going to do all that work anyway, i'd might as well redo it all with some matching, flexible, thicker wire.