can you hook up dual bateries in nbs gas truck with the painless wireing dual batteries hook up. or are the other ways?
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can you hook up dual bateries in nbs gas truck with the painless wireing dual batteries hook up. or are the other ways?
Wire the batteries in parallel. + to +, - to - to ground.
That's an easy way, or if you want to keep one isolated as a backup you can wire in an isolator relay. Say you spend a lot of time running your radio and want to be sure you can start your truck afterwards. Wire the relay to be controlled by the main ignition(pink wire, green plug at bcm, stays on during crank). Either way works, just depends on your needs.Quote:
Originally Posted by pl4yboy
Yep, depends what you need. I was just stating the simplest way, but you know that =)Quote:
Originally Posted by lo-lyf
Simplest is best sometimes. Parallel is probably what most people need anyway. It's usually lake goers and tailgate partiers that need the isolated battery.
I ran my yellowtop and Batcap in parallel with a 250amp alternator... no problems, even pushing 3200 watts for two hours.Quote:
Originally Posted by lo-lyf
i was thinking isolated only because my truck is the rolling dj 5 or 6 hours with the radio on MAX at the barnfires and its a pain to start it every hour to keep batterie charged. saw a write up about wrangler dual batt set up at petersons 4wheel.com any one heard of the product the after pics of the install look factory thats the look im going 4?
Isolated is a different story. I can give you a write up tomorrow if you need it. It's quite simple. I'm just too drunk and tired tonight.
sounds good send it whenever you get a chance
Fairly just this right here is exactly what you need to see...Quote:
Originally Posted by hillbilly6.0
Battery Isolators
good info thanks
For what you're doing isolated for sure, say you lived way up north and needed to crank it over for a while, parallel
in your situation where you just need to do it occasionally, you could just put a fuse on the positive line and pull it when you are running the stereo. end of the day just put the fuse back in and go. with a dual setup you can run a long time though, especially with good batteries like optimas. I have a volt meter digital display i made that tells you the voltage, you could do something like that and when it got down low you could start it.
I would use a cirquit breaker or marine battery selector switch before using a fuse in this application. Relays are automatic though, no popping the hood to turn a switch, or trip a breaker, etc. Great idea none-the-less for a cheap way to keep one isolated.
I was going to run mine in parallel and just use one of the drag racing emergency shut off switches in the cable to shut it off when I knew i was going to be playing radio for really long time. That way when you turn the switch on, you're basically jumping your own car...but while driving/starting/etc you have benefit of 2 batteries.
yeah i like the idea of a relay the best really. easy, cheap and a simple switch in the dash can control it. there are so many ways to go about it, you could have it setup where it's one battery, the other battery, or both. for the life of the batteries it's best to run them dual all the time and have matched batteries.Quote:
Originally Posted by lo-lyf
the peak voltage should be as close as possible to each other. i got 2 red top optimas that are still working after 12 years now.
.............or you could run it off of ignition and not have any switches. just use the ignition that stays on during crank(pink wire for GM).Quote:
Originally Posted by 567234ta
I'm not a big fan of isolators and most alternator companies will agree with me. Draining a battery so far is very hard on the alternator to recharge because its built for maintaining, not charging. My duals are parallelled. Another option would be to parallel them then put in a voltage alarm that will kill power after alerting you that its to low. A lot of inverters will use those.