2amp charger on batteries overnight to make it to autozone in the morning?

[oil pan 4]

Putting them on a 2 amp charger seems better than letting them sit dead for another 8 to 16 hours.

 

[The motor guy]

Putting them on a 2 amp charger seems better than letting them sit dead for another 8 to 16 hours.

I think one got low. You have to have two good batteries on these trucks, otherwise all kinds of weird stuff will happen. It won't start on just one battery

 

[SHOZ]

If the charger doesn't taper down 2a will cook it, so will 1 amp given enough time.

I'd hook it up and monitor it. If it starts gassing it's good enough.

 

[Chris142]

4 years isn't old for batteries.

Lucky to get 3 years here in the desert

 

[Donald]

Lucky to get 3 years here in the desert

Reason enough to move.

 

[Sumboodie]

It is down in houston when it's 100 degrees outside. You may get 5-7 years up north.

Decent batteries I've gotten 10-15 years out of.
Usually what kills them early is from getting low and freezing.

 

[ripcord]

AK vs AZ

 

[21_6.7f450]

Haha...5 years, even if still cranking fine, they get replaced. The F450 and Tacoma will get Oddessy Extremes when it's time. The F450 sits on a Noco G3500 when not being used. The batteries rest at 12.8 volts and 740CCA after 3 years. I must be doing something right.

 

[methusaleh]

Is this okay? I guess the batteries have been getting a bit weak over the last couple weeks and I didn't notice. Today on the last job everything on the dash went blank for a second while it it cranked over. I don't recall it doing that ever before, unless the batteries are about dead. This is my dodge cummins so it has two batteries and I'd rather not deal with the truck not wanting to crank over in the morning

So what happened in the end?

 

[The motor guy]

So what happened in the end?

I cleaned that one dirty positive cable and it hasn't done it again. My guess is one battery wasn't getting charged and the other was probably being overcharged. Typically if that cross over cable gets corroded like it was, the passenger side battery won't be charged and the driver side will get like 18v, dodges retarded charging system. Monitor one batteries voltage and charge the other and rely on the charge to trickle over to the other one. I could be wrong, but it's something like that, so if you have a dirty terminal that won't flow current then that's what happens. I didn't check to see that this was happening this time, but I did notice one battery was at 12.6 and the other at 12.8 with the truck off, so I bet that's what happened

 

[The motor guy]

Well it did it again today, so straight to autozone I went and get two new batteries. No questions asked, they swapped them out lol. I almost wonder if the alternator is sporadically charging if that's possible. Really strange, maybe the regulator inside of it is going bad. I'm not buying those junky duralast batteries anymore. They want over $200 for each battery! Advanced auto has them for $140. I let the truck sit for like 4 days unused and it still showed 12.6v

 

[eljefino]

Your batteries had massively reduced capacity although they still showed a surface charge. Good you replaced them. Open terminal voltage is not the only way to evaluate and can provide an incomplete picture.

 

[The motor guy]

Your batteries had massively reduced capacity although they still showed a surface charge. Good you replaced them. Open terminal voltage is not the only way to evaluate and can provide an incomplete picture.

Autozone never tested anything, so it may not have been the batteries either. According to them they were only 1.5years old which isn't right to me. I think they had their dates wrong or something

 

[Albin]

4 years isn't old for batteries.

Not today's batteries. Four years old and I even get the smallest hint they're going out? Time to replace. Actually, it's pretty much any time over three years. Life's too short to fork around with today's crappy batteries.

 

[Sumboodie]

Not today's batteries. Four years old and I even get the smallest hint they're going out? Time to replace. Actually, it's pretty much any time over three years. Life's too short to fork around with today's crappy batteries.

I spend around $2k a year on batteries... I try to run them till they are shot.

 

[BrendanC]

lucky to get 4 years in Houston with the heat down here. As soon as I hear the starter labor harder, I go get a new battery. Recently i've been having good luck with Everstart Platnium AGM's. every fleet vehicle gets them and ive yet to have to warranty any of them compared to the MAXX's.

 

[Sumboodie]

lucky to get 4 years in Houston with the heat down here. As soon as I hear the starter labor harder, I go get a new battery. Recently i've been having good luck with Everstart Platnium AGM's. every fleet vehicle gets them and ive yet to have to warranty any of them compared to the MAXX's.

Not familiar with that brand. I get Super Start from Schucks usually because that's where my account is. Just call and it shows up a few hours later. Get around 25-30% off shelf price on batteries.

 

[The motor guy]

Not familiar with that brand. I get Super Start from Schucks usually because that's where my account is. Just call and it shows up a few hours later. Get around 25-30% off shelf price on batteries.

That's an oreillys brand

 

[BrendanC]

Not familiar with that brand. I get Super Start from Schucks usually because that's where my account is. Just call and it shows up a few hours later. Get around 25-30% off shelf price on batteries.

walmart's house brand. made by different suppliers based on location.

 

[f355spider]

Haha...5 years, even if still cranking fine, they get replaced. The F450 and Tacoma will get Oddessy Extremes when it's time. The F450 sits on a Noco G3500 when not being used. The batteries rest at 12.8 volts and 740CCA after 3 years. I must be doing something right.

I am convinced that battery tenders make a big difference in longevity. I have a 2018 BMW M550iX with a main and aux AGM batteries. I don't drive it a ton (only 16k miles) so I plug it into a Battery Minder whenever it is parked and both batteries test well over their CCA rating after over 6 years of use.

Same on a 2001 BMW 540. I installed a H8 Group 49 AC Delco AGM (made by Varta) in 2019. Since the pandemic I got in the habit of plugging it into a Save a Battery tender from Granite Digital at least two or three times a week overnight. And that battery tests at over 1000CCA after over 5 years of use.