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Topic Review (Newest First)
05-18-2013 05:33 PM
ylpkm
Re: 2 nsb 40ft's good as starter batts?
Well starting is just fine with the batteries. I can't really say if the batteries are awesome or if the capacitors are doing a ton of work. never went below 13.7 volts. Which is awesome because i would hit 12 volts before yesterdays upgrade.
05-18-2013 09:45 AM
ylpkm
Re: 2 nsb 40ft's good as starter batts?
Quote:
Originally Posted by snow0707 View Post
1/0 cable can run over 3000 watts at 10 ft easy..
with new batteries. its a good idea to let them charge over night.
I was worried to leave them overnight because I charged them up at the 12 volt maintainer for a couple hours, then on the 12 volt 15 amp setting til they wouldn't go higher than 14.5 volts at all. Then I charged em a bit at the 12 volt maintainer again. the amperage draw meter on the charger showed them being full after the 12 volt 15 amp setting.
And again, thanks everyone for your input.
05-18-2013 01:24 AM
snow0707
Re: 2 nsb 40ft's good as starter batts?
1/0 cable can run over 3000 watts at 10 ft easy..
with new batteries. its a good idea to let them charge over night.
05-18-2013 01:06 AM
SINTORMAN
Re: 2 nsb 40ft's good as starter batts?
Quote:
Originally Posted by ylpkm View Post
AGHHHH! My back! (I'm not close to old) worked on my car for like 13 hours. So the 2 nsb 40ft's can start the car, although I don't know if they can do it multiple times without charging up, by charging up I mean 10 seconds on the alternator. The first time i cranked it the I could hear the alternator cranking a bit hard, the second time not as much. But I think from now on it'll crank just fine. I also added a run of 2/0 wire to the back and (half) installed 2 banks of 6 maxwell capacitors. Just need to run 2 power wires from the maxwells to the amp.
(1 run of each is enough for 2000 watts right? 1 1/0 and 2/0. I do have enough for a second run of 2/0 and 1/0, but it would be very crowded.)
The two should be able to start your car better than your stock battery ever could.. Just make sure you have proper wiring.
05-18-2013 12:24 AM
ylpkm
Re: 2 nsb 40ft's good as starter batts?
AGHHHH! My back! (I'm not close to old) worked on my car for like 13 hours. So the 2 nsb 40ft's can start the car, although I don't know if they can do it multiple times without charging up, by charging up I mean 10 seconds on the alternator. The first time i cranked it the I could hear the alternator cranking a bit hard, the second time not as much. But I think from now on it'll crank just fine. I also added a run of 2/0 wire to the back and (half) installed 2 banks of 6 maxwell capacitors. Just need to run 2 power wires from the maxwells to the amp.
(1 run of each is enough for 2000 watts right? 1 1/0 and 2/0. I do have enough for a second run of 2/0 and 1/0, but it would be very crowded.)
05-14-2013 02:45 PM
SINTORMAN
Re: 2 nsb 40ft's good as starter batts?
Quote:
Originally Posted by snow0707 View Post
they are both lead acid. just the agm charges faster.
I ran flooded batteries with gell (another lead acid) for yrs and never had a problem.
but thats not saying anyone else had. or will. I haven't used agm yet.
I wouldn't be afraid of mixing them. capacitors are another type of battery.
1. Regular lead acid batteries utilize a different cell architecture which can lead to slightly different resting voltages than agms and will cause a constant parisitic draw on the agm and damage it over time.

2. Capacitors are not another type of battery. Batteries convert chemical energy to electrical energy. Capacitors store electrons and utilize a COMPLETELY different method of storing energy.
05-14-2013 02:22 PM
snow0707
Re: 2 nsb 40ft's good as starter batts?
Quote:
Originally Posted by Beckerson1 View Post
That may be so, your composition is still different.
they are both lead acid. just the agm charges faster.
I ran flooded batteries with gell (another lead acid) for yrs and never had a problem.
but thats not saying anyone else had. or will. I haven't used agm yet.
I wouldn't be afraid of mixing them. capacitors are another type of battery.
05-14-2013 01:13 PM
Beckerson1
Re: 2 nsb 40ft's good as starter batts?
Quote:
Originally Posted by snow0707 View Post
agm is lead acid just sealed. both use sulfuric acid. its just Absorbed into the Glass Matt.
That may be so, your composition is still different.
05-14-2013 01:33 AM
snow0707
Re: 2 nsb 40ft's good as starter batts?
[QUOTE=Beckerson1;937250]Not good to mix Lead acid and AGM's. Try to keep the specific material used the same as there are differences between them.

agm is lead acid just sealed. both use sulfuric acid. its just Absorbed into the Glass Matt.
05-13-2013 04:24 PM
Beckerson1
Re: 2 nsb 40ft's good as starter batts?
Quote:
Originally Posted by ylpkm View Post
Did a little digging and found its performance charts:
http://www.ndsi1.com/images/pdf/NSB4...3-02-01.02.pdf
It can do 350 amps for 2 minutes before it drops to 9 volts (for one battery). I'm assuming CCA would be way higher, at least 500 amps.

So quick inquiry here; Would it at all be beneficial or negative to keep a lead acid under the hood and try to get the nsb's in the back. I dont know the Ah rating for the lead acid, so i cant really decide. or would it be better just for the nsb's be under the hood. Just making sure the consensus of advice is similar.
My thinking was if i have the agm and the lead acid in series, the power draw across all of them tries to be equal right? So when im running a large load, the agm's will discharge and recharge faster and the lead acid will still be lower, and if I'm continuously pulling 1000-2000 watts for a while, the agms will be more charged, and the acid will bring them lower and overall seems like the lead acid battery will be the anchor. I am probably wrong, as I am hypothesizing on a subject I haven't really had experience with.
Not good to mix Lead acid and AGM's. Try to keep the specific material used the same as there are differences between them. I can't get into the specifics.

So with this said just use the two nsb's...

Currently I'm running an AGM in the back as I had to move my battery in order to get my intake to fit. Don't have any issues with starting the car with a 17" increase in length and stock cabling other the big 3.

A good thick power run up to the starter or front distro block will work just fine. I've tested mine and the drop between the two doesn't register on my DMM.
05-13-2013 03:03 PM
ylpkm
Re: 2 nsb 40ft's good as starter batts?
Did a little digging and found its performance charts:
http://www.ndsi1.com/images/pdf/NSB4...3-02-01.02.pdf
It can do 350 amps for 2 minutes before it drops to 9 volts (for one battery). I'm assuming CCA would be way higher, at least 500 amps.

So quick inquiry here; Would it at all be beneficial or negative to keep a lead acid under the hood and try to get the nsb's in the back. I dont know the Ah rating for the lead acid, so i cant really decide. or would it be better just for the nsb's be under the hood. Just making sure the consensus of advice is similar.
My thinking was if i have the agm and the lead acid in series, the power draw across all of them tries to be equal right? So when im running a large load, the agm's will discharge and recharge faster and the lead acid will still be lower, and if I'm continuously pulling 1000-2000 watts for a while, the agms will be more charged, and the acid will bring them lower and overall seems like the lead acid battery will be the anchor. I am probably wrong, as I am hypothesizing on a subject I haven't really had experience with.
05-13-2013 01:17 AM
ylpkm
Re: 2 nsb 40ft's good as starter batts?
I'll only have time to start with the batteries and the maxwell capacitor testing after this week.(Finals week) If anyone is relying on information, I can post any findings i find, when I get the time to work with them.
05-12-2013 11:56 PM
snow0707
Re: 2 nsb 40ft's good as starter batts?
Quote:
Originally Posted by ylpkm View Post
Alright, thanks for the input. Ill take the lead acid out and put the 2 under the hood if it all works out right. do you know the CCA of just one of them?
I couldn't find the cca. . is why I said what I said earlier.
it did how ever say 1500 amps if shorted. which will start the car.
05-12-2013 09:33 PM
Slobalt7
Re: 2 nsb 40ft's good as starter batts?
Quote:
Originally Posted by ylpkm View Post
I mean people said they have started their vehicles with a shuriken bt20.
I ran my Chevy Cobalt off a BT-20 for 3 months until the battery got loose, fell over, and shorted out when the positive hit the battery mount while I was driving at 45... Coasted my happy ass about 200 yards into a parking lot and stopped the fire that caused my cabin to be full of smoke.
05-12-2013 09:29 PM
ylpkm
Re: 2 nsb 40ft's good as starter batts?
Quote:
Originally Posted by SINTORMAN View Post
one of those will start a vehicle just fine.
Alright, thanks for the input. Ill take the lead acid out and put the 2 under the hood if it all works out right. do you know the CCA of just one of them?
05-12-2013 09:14 PM
SINTORMAN
Re: 2 nsb 40ft's good as starter batts?
one of those will start a vehicle just fine.
05-12-2013 08:52 PM
armykyle1
Re: 2 nsb 40ft's good as starter batts?
they'll be fine either way. I would suggest putting them in the back though.
05-12-2013 07:44 PM
ylpkm
Re: 2 nsb 40ft's good as starter batts?
Quote:
Originally Posted by snow0707 View Post
the pdf link you gave. those are not made for starting.
if they wont start the car, ill find a use for them (ill try to put em in the back, they were a good deal anyway, half price of the usual ebay price and new). but the pdf says a short circuit will produce 1500 amps. idk if that means it can do that much, but i assume each battery will be able to push 400 amps, so 2 of those should start a 4 cylinder right? I mean people said they have started their vehicles with a shuriken bt20.
Simply put, those 2 agm batteries would be better for daily audio than having a lead/acid starter battery right?
05-12-2013 07:35 PM
snow0707
Re: 2 nsb 40ft's good as starter batts?
the pdf link you gave. those are not made for starting.
05-12-2013 04:24 PM
ylpkm
Re: 2 nsb 40ft's good as starter batts?
Quote:
Originally Posted by Slobalt7 View Post
"boostcaps"?
the maxwell ultracapacitors 6* 2.5 volt ones
05-12-2013 04:19 PM
Slobalt7
Re: 2 nsb 40ft's good as starter batts?
"boostcaps"?
05-12-2013 02:41 PM
ylpkm
2 nsb 40ft's good as under the hood batteries?
Many places say the northstar batteries kick ass and are very good, but would these be good starter batteries. The dimension looks like i could put 2 side by side and it would be like a group 34/24 battery. I do live up north where temps do go negative, would these start my car. Main question, would these help my voltage be way more stable than a diehard gold battery. The die hard doesnt list Ah though
(250 amp Mechman, big 3 done, getting 2 more lines of 2/0 to run to amp, and will put in boostcaps in back by amp).

Well anyways, it was a good deal, so i went with it, and if the boostcaps are hooked up, it'll definitely crank the engine.

(http://www.northstarsitetel.com/1.0....2-01-04%29.pdf)

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