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cold weather effect on batterys


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I don't know about you guys - But the over night temperatures around here get to be -20 to -40 degrees.

Something I've notice time, and time again is that ~ When I start my vehicle in the A.M. after a cold night - My voltage sags around 13.8 - But once I let the engine warm up for about 20 minutes, It goes back up to 14.8+

Not sure with all these mixed results - but it seems like this problem is really dependant on the type, specs, and age of your battery -

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cold is going to bring your voltage down.

especially if your car is just sitting

if you can find a charger to put on it or start it up and let it run for like 10 minutes once or twice a week in between drives

look for a charger first tho, alts dont like to refuel batts

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if alts dont like to refuel them, then wtf are they there for besides running the car?

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I don't know about you guys - But the over night temperatures around here get to be -20 to -40 degrees.

Something I've notice time, and time again is that ~ When I start my vehicle in the A.M. after a cold night - My voltage sags around 13.8 - But once I let the engine warm up for about 20 minutes, It goes back up to 14.8+

Not sure with all these mixed results - but it seems like this problem is really dependant on the type, specs, and age of your battery -

its a interstate a few years old.....how do red tops do in the cold??

2000 chevy blazer

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it is 28F right now in north atlanta and when I start my car in the morning I will probably see 14.5 for a second :D then once I drive 15 min to my buddies house to go to the falcons game(FALCONS VS. EAGLES!!!)I will be seeing 13.8 :( lol

I started my truck today at 27 degree and it was as 16.0v with my MLA dropped to 15.5v after an hour drive and idle.

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if alts dont like to refuel them, then wtf are they there for besides running the car?

alts dont "run" a car...WTH? Alts also dont charge a battery, they "MAINTAIN" a charge in a battery. If you rely on an alt to charge a battery offen, your going to be going thru a shit load of alts.

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I can unhook my battery once the truck is running, turn my AC on full blast, my high beams on, and pretty much do everything besides crank the system.

Sounds like running the car to me.

2004 Yellow F150 STX 4x4 Single Cab

2 Yellow DC Power 270SP's Alts

4(and counting) XS Power 6500's

4 DD3515s Supercharged

53cu.ft 4th order blowthrough

8 DD M1b's

6 Selenium 8's

2 Selenium ST350s

154.1 @ 41hz Legal Burp

Build Log

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cold, umm, global warming man, al gore told me that cold is so history lol

And when its in the teens here in NC, which isn't all that often, my voltage does go to a low 13 then back up to 14 after the engine is warm.

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