Stop in for a cup of coffee

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My truck still have original batteries. 2. 66k miles. 2017 truck
Sounds right, you are 4 years in. They should last another 1-2 years based on what I get in the SRT and the 300C. Of course, you are in a narrow range ideal climate so it might go twice that long...maybe more. Cold is hard on batteries.
 
Sounds right, you are 4 years in. They should last another 1-2 years based on what I get in the SRT and the 300C. Of course, you are in a narrow range ideal climate so it might go twice that long...maybe more. Cold is hard on batteries.
So is heat.. But yes..
 
Ready for primer. Weld in tomorrow. Took some time to finish this

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I asked sales person at Batteries + why replacement batteries don’t last as long as factory installed ones. He said when a vehicle is new things work easier and takes less battery energy.
Yep, age, weathering and environmental conditions slowly degrade the electrical infrastructure of a vehicle such that corrosion wear increases resistance within the system and impedes electrical circuit efficiency. Even just a little corrosion on the contacts in every electrical connection changes the current flow and reduces the effective voltage getting to components creating more impedance resulting in more draw from the alternator to keep up.

All of which reduces the available power to maintain the battery at full charge.
 
Yep, and modern cars are electricity hogs. Heated seats, power windows, power seats, high amp sound systems, etc. People don’t realize that most of the alternator output will be diverted to powering those things instead of charging the battery and the vehicle needs to run longer to charge the battery when they are being used. My wife is a perfect example of that.

15 minutes run time...seat heaters on, headlights on, stereo blasting and using the power lift gate and side doors after shutdown means the battery got nearly nothing to recharge with. Then let it sit for a few days with the IOD drain and repeat. The battery doesn’t stand a chance to maintain a charge.
Alternators arent battery chargers. Its a common misconception.
 
Voltage should of been at least 14. Sounds like a bad battery or not charging properly. I’m not driving my cars very much. Don’t have this issue. Cold *** weather can really do a number on batteries.
Fully charged battery out of factory is 13.2. Running voltage is minimum 1 volt above battery voltage with accessories on. So with Daves battery at 12.7, engine on and all the goodies running should be no less than 13.7. Ideal is 14.2 to 14.6.
 
So what keeps the battery charged?
Not designed to fully recharge a dead battery is what i meant.
A deeply discharged battery needs a trickle charge. Alternators go full bore when battery is low. Causes surface charge.
 
Not designed to fully recharge a dead battery is what i meant.
A deeply discharged battery needs a trickle charge. Alternators go full bore when battery is low. Causes surface charge.
Quite right. Which is why I pulled the battery and put it on the charger for the night. The alternator will only get her through tomorrow...but won’t address the issue of the low charge.
 
Fully charged battery out of factory is 13.2. Running voltage is minimum 1 volt above battery voltage with accessories on. So with Daves battery at 12.7, engine on and all the goodies running should be no less than 13.7. Ideal is 14.2 to 14.6.
Yep. It’s running 13.8 with the engine running and all accessories on. But I still feel it’s low which is all the more reason I pulled it and put it on the charger. Can’t hurt regardless.
 
Fully charged battery out of factory is 13.2. Running voltage is minimum 1 volt above battery voltage with accessories on. So with Daves battery at 12.7, engine on and all the goodies running should be no less than 13.7. Ideal is 14.2 to 14.6.
Hi there. The newer vehicles are quite different. My 2015 Yukon runs at 12.7 volts in idea conditions. It also takes a special battery. This is a fuel saving software to reduce the load on the engine. When I purchased it I had to research the service manual. I just got rid of that piece of junk and bought a new Dodge Caravan. Mopar baby!
 
I've always seen 12.7 as the fully charged around 13.2 as the float or surface charge, like right after shutting off the engine. (Talking older vehicles not stuff with delayed lights on etc.)

We had a thread going on various things that can and do go wrong when using an alternator to charge a discharged battery.

Unfortunately we had member here do that very thing recently.
At least it didn't send battery acid flying. But he's still got a bunch of damage in the wiring to fix.
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Check on the yuck in the intake tract. Was in the carb too.
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Cleaned it up and put a new seat for the fuel inlet.
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Fired it up this afternoon and adjusted the idle and main mix. Ran great!
Only had enough VP fuel for a quarter tank. I'll mix in some pump gas if needed tommorrow. Only should need a 1/2 tank at most.
 
Rob, did you see if that spring adapter came out?

Not yet sir. I will tomorrow. I have to go to a friend's house and put his Chevelle back together he bent a bunch of pushrods in and get it running good again......I hope. I'm takin the kit with me so I'll look at it then.
 
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