Apcsox

I was just curious as to the proper way to hook up a secondary battery in the cobalt..... what is the proper way to hook two batteries together so they will both be charged by the alternator, and that the vehicle will utilize both batteries power

theneelster

Really? Typically people just run accessories off of the second battery (like a stereo, gauges, etc). I'm not sure if daisy chaining them together would actually work, but I do know it won't make much of a difference in how your car acts or performs. I guess you'd just run cable from the power lead to the second battery then just ground the second battery to the ground plate (in the redline we have a ground plate in the trunk...I know the cobalt battery is in the front but assume the design is somewhat the same); but I'm not sure about this.

CrazyVis

nope...cobalts are the same.. our battery is in the trunk to

07blackg5

iTrader: (8)

ya lol so obviously you dont know. ha ha just playing. but seriously

Apcsox

I know there's running them in a series and running them on a parallel circuit..... one basically doubles the voltage output and the other basically doubles the reserve capacity available........ I don't know which is better

JohnsRallyYellowSS

Guys, I have an extra battery ran (daisy chained) in the trunk, let me just say I could run my neons, stereo, and other stuff during the whole evening of Hot Import Nights without any problems!

raptors_67

Run them in series and watch the magic smoke come out of your car... lol. I don't think the electrical system will enjoy 24 volts DC. The best and proper way to do this is to use a battery isolator, saves your main battery from being depleted when the car is not running.

CSM Huber

Electrical devices (all of them) are said to run on smoke....once you let it out, the electrical device stops working!

Batteries in series = Smoke Release! (If you are doubling the voltage your car requires)

Batteries in parallel = More cranking power! (why carry the extra weight? Get a jump start if you need one)

07blackg5

iTrader: (8)

he probably wants it for his stereo/some sort of accessory with a heavy electrical load

originaladrian

to do it right you will want a diod based battery isolator.

this way your batteries wont drain each other at night when ur car is off.

u can also isolate the batteries with a special relay.

u are going to want to use one of these two.

i would use a real isolator