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battery and charging sys. on newer fi car/trucks? #1416597 04/08/13 10:09 AM 04/08/13 10:09 AM
Joined: Jan 2003 Posts: 8,849 poplar bluff mo. T toplescuda OP I Whine
toplescuda OP I Whine T Joined: Jan 2003 Posts: 8,849 poplar bluff mo.	We were talking about the purpose of the battery on newer car and trucks at break buddy was saying that the battery has to be big enuff to keep motor running my thoughts were if all is good with the alt. after it starts up the battery is no longer needed its only purpose is to start the motor or provide power when not running for lights and such you should be able to un hook battery (after running) and drive it (least in day time) and as long as battery cables dont touch anything all be good just dont go hooking battery back up while its running am i right or wrong 1970 barracuda convert. 1 of 59 1970 pro street A.A.R. clone (panther pink) 1971 charger 2015 hellcat challenger. Redline red 2014 quad cab 4x4 ram 8 speed hemi

Re: battery and charging sys. on newer fi car/trucks? [Re: toplescuda] #1416598 04/08/13 12:29 PM 04/08/13 12:29 PM
Joined: Feb 2003 Posts: 8,684 A Andrewh master
Andrewh master A Joined: Feb 2003 Posts: 8,684	it is not just for starting the car. however you are correct, it isn't needed to keep the car running once it has started. It is used as a capacitor/buffer. any voltage spikes are absorbed by the battery, to help protect the electronics on the modern car. that is why no one recommends you test an alternator on a computer car by pulling the neg cable off the battery any more.

Re: battery and charging sys. on newer fi car/trucks? [Re: Andrewh] #1416599 04/08/13 02:18 PM 04/08/13 02:18 PM
Joined: Jan 2003 Posts: 8,849 poplar bluff mo. T toplescuda OP I Whine
toplescuda OP I Whine T Joined: Jan 2003 Posts: 8,849 poplar bluff mo.	The point i was making to him was the factory charging sys.(if working as it should) is capable of keeping the motor running and not rely on the battery for power once its started 1970 barracuda convert. 1 of 59 1970 pro street A.A.R. clone (panther pink) 1971 charger 2015 hellcat challenger. Redline red 2014 quad cab 4x4 ram 8 speed hemi

Re: battery and charging sys. on newer fi car/trucks? [Re: toplescuda] #1416600 04/08/13 04:36 PM 04/08/13 04:36 PM
Joined: Feb 2003 Posts: 8,684 A Andrewh master
Andrewh master A Joined: Feb 2003 Posts: 8,684	you said the purpose. again I agreed, that once the car is running, the alternator puts out enough energy to keep the car running without the battery. BUT, the battery is needed as a capacitor to smooth out the alternator output. so it is needed for the electrical system to function properly. it is just not adding power to the system.

Re: battery and charging sys. on newer fi car/trucks? [Re: Andrewh] #1416601 04/08/13 09:33 PM 04/08/13 09:33 PM
Joined: Jan 2003 Posts: 8,849 poplar bluff mo. T toplescuda OP I Whine
toplescuda OP I Whine T Joined: Jan 2003 Posts: 8,849 poplar bluff mo.	I got to let him read this lol 1970 barracuda convert. 1 of 59 1970 pro street A.A.R. clone (panther pink) 1971 charger 2015 hellcat challenger. Redline red 2014 quad cab 4x4 ram 8 speed hemi

Re: battery and charging sys. on newer fi car/trucks? [Re: toplescuda] #1416602 04/08/13 09:54 PM 04/08/13 09:54 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	Quote: buddy was saying that the battery has to be big enuff to keep motor running my thoughts were if all is good with the alt. after it starts up the battery is no longer needed its only purpose is to start the motor or provide power when not running for lights and such As said a shock absorder for the system you should be able to un hook battery (after running) and drive it (least in day time) and as long as battery cables dont touch anything all be good never want to unhook the batt while running just dont go hooking battery back up while its running I've done it with no problems but only in rare cases where I've had to seperate the two am i right or wrong yes and no See if you can get him to join (Moparts), he sounds like our kind of guy live every 24 hour block of time like it's your last day on earth

Re: battery and charging sys. on newer fi car/trucks? [Re: toplescuda] #1416603 04/09/13 12:22 AM 04/09/13 12:22 AM
Joined: Jan 2007 Posts: 208 North Texas 3 360cuda enthusiast
360cuda enthusiast 3 Joined: Jan 2007 Posts: 208 North Texas	OK...I've gotta chime in on this one. I personally own a 2007 Ram 1500. I bought it new. Early last year the original battery failed. It happened very suddenly. The truck was running perfectly, we visited a jobsite, got ready to leave and it would not start. Not even a click on the starter. We hooked up jumper cables and got it started. The truck ran down the road about 200 yards. It started acting like the transmission was stuck between gears. It finally quit pulling altogether and the check engine light came on, then the engine died, no start. We checked the battery, it wasn't shorted, just dead. We put a new battery on it and it ran perfectly. That was 20,000 miles ago. Don't ask me why, or what, because I don't know much about them, but that truck has to have a good battery on it or it will not run.

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