so hers the deal, i am planning on running a second deep cycle battery on my truck just for a winch, lights, etc., completely isolated from my starting battery, i am planning on running an ignition hot relay to charge the second battery, but what the hell could i use to limit to charging current to that battery to about 10 amps with no voltage drop to reduce the load on my alternator? i need to maintain the charge at around 14.5-15 volts when the truck is running, but the depending on the discharged state of the battery anywhere from 11-13 volts, the current demand will change

1/27/2007 1:36:33 PM

garage?

1/27/2007 1:53:56 PM

Not trying to be an ass here, but weren't you the same guy that was battling some other dude about car stereo stuff and you acted like you were gods gift to 12V electricity?

1/27/2007 2:41:51 PM

http://www.google.com

1/27/2007 2:49:29 PM

http://www.ece.ncsu.edu/

pwn ftw

1/27/2007 3:41:36 PM

^^^ this has nothing to do with half ass wiring that you do, this is about designing something thats not commercially available jackass

1/27/2007 3:49:31 PM

just throw a resistor in there to limit the current

1/27/2007 4:49:47 PM

throw some capacitors and some thyristors on the line and use a PWM switching technique to inject reactive currents into your load to help maintain voltage levels and frequency

EDIT: THEN RECTIFY





[Edited on January 27, 2007 at 5:29 PM. Reason : OH FUCK IT'S DC]

1/27/2007 5:28:47 PM

Well, I was going to give you various alternatives, but since you insist on being a real dickhead, fuck you.

1/27/2007 6:13:45 PM

http://www.bcae1.com/battiso.htm

I believe the diode type isolator is what you're looking for, and certainly the simplest method.

1/27/2007 7:03:20 PM

^ I concur.

1/28/2007 1:59:43 AM

1.21 Jiggawatts.

1/28/2007 2:56:28 AM

Quote :

"Well, I was going to give you various alternatives, but since you insist on being a real dickhead, fuck you."

i really don't give a shit about your half asses nigger rigged suggestions





now for everyone else, the diode type seems to be the ticket, and i have a few few 12v regulator/rectifiers laying around i may be able to scavenge parts out of

1/28/2007 10:12:13 AM

The diode seems to be the ticket? But you wanted to current limit things. Do you intend on killing your deep cycle, then throwing that + the stock battery onto the alternator at once?

If so, have fun with the diode solution!

1/28/2007 2:19:08 PM

what the fuck does a diode have to do with limiting charge current of a resistive SLA at low open terminal voltage?


NOTHING

1/28/2007 11:29:00 PM

Quote :

"The diode seems to be the ticket? But you wanted to current limit things. Do you intend on killing your deep cycle, then throwing that + the stock battery onto the alternator at once?"

wow, you just get stupider every day, there a hundreds of commercially availible isolators that do just that

http://www.victronenergy.com/upload/documents/Datasheet-UK-ArgoDiodeBatteryIsolator.pdf

the alternator won't charge more than it's capable of, that's why it has a regulator, the purpose of the diode isolater is to prevent backfeed from the starting battery to the auxillary battery while allowing the alternator to charge both, mr. god's gift to electrical engineering fucktard

[Edited on January 29, 2007 at 12:56 PM. Reason : and the current limiter is completely separate fromt the isolator, that was my original question]

[Edited on January 29, 2007 at 12:56 PM. Reason : asshat]

1/29/2007 12:52:56 PM

Quote :

"and the current limiter is completely separate fromt the isolator, that was my original question"

So why are you even commenting on the isolator if that wasn't even your original question? I was commenting about your original question you stupid mongoloid. It's funny, you have such a hard on about beating the college boy that you are blind to what is going on here.

1/29/2007 1:11:00 PM

the point is you stupid fuck is that isolators are readily availible, but they split my 160 amp alternator between two batteries, i want no less than 150 amps availible to my main system at all times, with a max of 10 amps to my secondary battery, i don't know how to make it any clearer to you than to beat you upside the head

1/29/2007 1:23:51 PM

You really do have a massive mental block on everything I am posting to you. You're so hell bent on not being trolled, that you are completely missing what I am saying.

You just said this:

Quote :

"with a max of 10 amps to my secondary battery, i don't know how to make it any clearer to you than to beat you upside the head"

Which is pretty easy to read in your original post

Quote :

"but what the hell could i use to limit to charging current to that battery to about 10 amps"

Someone tossed out the diode isolation idea, which btw, you didn't mention having trouble with in your original post, yet, you replied this

Quote :

"the diode type seems to be the ticket, and i have a few few 12v regulator/rectifiers laying around i may be able to scavenge parts out of"

Which is strange, because, like I just said, this doesn't have anything to do with your original post, yet you make it seem like this solved your problem

to which I replied

Quote :

"The diode seems to be the ticket? But you wanted to current limit things."

and Quinn replied (who also has a solid EE foundation)

Quote :

"what the fuck does a diode have to do with limiting charge current of a resistive SLA at low open terminal voltage? NOTHING"

So I think it's good and fucking given that I know what you are talking about you sorry sad existence for a person.

And since I apparently haven't proven my utter domination of you in regardless to this type of electronics problem solving, I almost started to help...but I think I'll just revert to this

Quote :

"Well, I was going to give you various alternatives, but since you insist on being a real dickhead, fuck you."

1/29/2007 3:48:11 PM

all i just read was blah blah blah TypeA is a fucking idiot

1/29/2007 4:00:44 PM

You lost your own thread my man. Bobby, this needs moving to the garage I think, no need to have tech talk polluted by the likes of this redneck.

1/29/2007 4:01:39 PM

hahaha, he already proved himself an idiot in the garage so that no one listens to him, i am still waiting for some legitimate answers here instead of this asshole's bullshit

1/29/2007 4:21:18 PM

I'm not sure why you even posted this thread. You already claimed car wiring and electronics superiority in the other thread.

This thread needs locking.

1/29/2007 4:28:18 PM

this whole god damned message board needs less fucktards like you

1/29/2007 4:42:51 PM

Hey pal, you're the one, who in this very thread where you asked about current limiting, said that a diode would work for you.

1/29/2007 4:46:42 PM

Quote :

"the diode type seems to be the ticket, and i have a few few 12v regulator/rectifiers laying around i may be able to scavenge parts out of"

let me interpret since you can't read worth a shit, read real slow now, the diode type isolator will work well for my application of two isolated batteries, but what can i scavenge out of what i have laying around here for a current limiter?

1/29/2007 4:56:14 PM

I'm not sure any would be necessary as the voltage drop accross the diode would make sure the secondary batter always drew substantially less current than the primary battery (unless the secondary is near fully discharged and the primary is fully charged).

Regretfully, the voltage drop would also make sure the secondary battery never would be fully charged.

1/29/2007 5:34:14 PM

how about a 10 amp charger on an inverter?

1/29/2007 5:47:16 PM

well the secondary battery would be flat out dead at times, but the alternator puts out 14.5-15.5 volts, and the battery only needs to be charged to 12.6, the voltage differential will determine the current flow, problem is, its always changing

1/29/2007 5:50:01 PM

You do realize to get the best life out of a deep cycle that you should kill it before recharging don't you?

1/29/2007 6:15:09 PM

you do realize, no how many boats have you owned? none? how long have you had a battery last? oh, thats right, you don't know because you are a fucktard?

1/29/2007 6:22:56 PM

Just trying to help you man. I'm pretty sure you've been enough of an ass to me that you aren't going to get too many other folks in here to help.

1/29/2007 6:37:47 PM

actually i already have several answers, and i dont give a shit about your opinion, cause you spew so much bullshit that nothing is relevant anymore that you post

1/29/2007 6:46:49 PM

Excellent, now you can get the fuck out of Tech Talk.

1/29/2007 8:33:51 PM

Quote :

"You do realize to get the best life out of a deep cycle that you should kill it before recharging don't you?"

You have GOT to be kidding me. none of my suppliers advocate this.

1/29/2007 9:11:30 PM

TypeA is Tech Talk's village idiot, you can safely ignore him

1/29/2007 9:14:23 PM

^^ yep builds up excessive lead sulfate on the plates quickly reducing its capacity

1/29/2007 9:27:36 PM

^THANK YOU.

1/29/2007 9:31:55 PM

Guh...I don't mean kill the thing dead down to nothing. I mean, you get longest life out of it by not using it lightly and then putting a charge back on it.

I was going to ask the OP how he intends to use this on a day to day basis, but he clearly knows everything, else he wouldn't have made this thread.

1/29/2007 9:33:26 PM

running a winch is a lot different than sitting in the gas station parkin lot with your nig music bumpin, thats all you need to know faggot

1/29/2007 9:39:24 PM

You really need to grow up man. You're acting like a spoiled 7 year old that doesn't get his way. I can't figure out if you were coddle too much by your mama or your daddy wasn't around. That's the only way I can figure out how a guy your age can have such a large chip on his shoulder.

1/29/2007 9:41:27 PM

this mother fucker just doesnt quit, i can tell he never goes out much, or he would get beat to a pulp on a daily basis

1/29/2007 9:43:40 PM

Is your maturity level hovering somewhere in the middle school range?

1/29/2007 9:51:42 PM

no, just your intelligence level

1/29/2007 9:55:59 PM

Quote :

"Guh...I don't mean kill the thing dead down to nothing. I mean, you get longest life out of it by not using it lightly and then putting a charge back on it."

No, with regard to a deep cycle lead acid battery you're absolutely and 100% without exception incorrect. You couldn't be more wrong without failing to respond to the question. Depth of discharge is the determining factor in the life of these batteries. You may be thinking of NiMH, which loses capacity at a rate directly proportional to charge and temperature, but I seriously doubt you were thinking at all.

In any case you clearly don't have a working knowledge of what you're talking about and make no attempt to acknowledge your ignorance, a pattern which is consistent in much of your posting and is the reason why nobody cares to hear your opinion.

1/30/2007 5:56:03 PM

deep cycles are designed to be discharged to about 20% capacity from time to time..

found this: http://www.amplepower.com/wire/sarv3/index.html .. a regulator that has a current limiter on it, uses potentiometers to control the duty cycle of the alternator output.

not sure if that helps, but you may be able to rig something up

[Edited on January 31, 2007 at 8:21 AM. Reason : ]

1/31/2007 8:18:26 AM