Start/Stop battery is STUPID!

[GypsyMech]

Some say, and there are videos about it - going in through the right wheel well is easier. Crank the wheels hard left, take out a screw and a couple of retainers, pull out the rear half of the fender liner and swap it out from there.
If you've gone through two - there's something going on.
Has the main battery ever been properly tested?
What sort of voltage do you see at the battery when the truck is just sitting, off?

I didn't even have ONE replaced in 3 years - you have something going on....... maybe the truck sits a lot? Only short drives?

It you live in Arizona

Some say, and there are videos about it - going in through the right wheel well is easier. Crank the wheels hard left, take out a screw and a couple of retainers, pull out the rear half of the fender liner and swap it out from there.
If you've gone through two - there's something going on.
Has the main battery ever been properly tested?
What sort of voltage do you see at the battery when the truck is just sitting, off?

I didn't even have ONE replaced in 3 years - you have something going on....... maybe the truck sits a lot? Only short drives?

Some say, and there are videos about it - going in through the right wheel well is easier. Crank the wheels hard left, take out a screw and a couple of retainers, pull out the rear half of the fender liner and swap it out from there.
If you've gone through two - there's something going on.
Has the main battery ever been properly tested?
What sort of voltage do you see at the battery when the truck is just sitting, off?

I didn't even have ONE replaced in 3 years - you have something going on....... maybe the truck sits a lot? Only short drives?

Or you live in Arizona

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[Hootbro]

It you live in Arizona


Or you live in Arizona

Do they give you a special stipend to live in Arizona? Seems to be a difficult place to live.

 

[Caspien]

Wasn't discounting his statement at all, just stating how my brain tends to work.

Honestly? Not that unhappy with the setup I have, now, other than the location of the aux battery being a nuisance. With the portable batteries, at least, I have many other ways of charging them, than having to have the JT right there. (Can bring them inside, charge them in the workshop, hook up the solar panels.. etc... )

A 'Perfect' setup, would be a way to connect them into the JT while driving, and charge them that way... hmm.. maybe I'll just look at an onboard inverter... *Shrug*

This is my biggest issue.. over-analyze EVERYTHING.. and then suffer from buyers remorse, no matter what I do.. if I buy something.. I get sick because I bought it.. if I don't buy something.. I get sick because I didn't.. lol..


Been like this nearly 50 years, don't expect it to change anytime soon, unfortunately

Tested the Aux after work today, 10.2V, and the primary is already throwing aux switch errors again.

But, it looks like I'm replacing both batteries since local O'Reilly ordered both batteries for me, on Sat, unbeknownst to me... manager called a little while ago, and let me know they arrived if I still needed them.

So, picked up, and going to be swapping tomorrow. (Good thing, too.. remote start isn't working since I disconnected the aux for some oddball reason.. wife discovered that when we were going down to grab dinner)

94 shows at 12.6, and size 14 shows at 12.4... so both can use some topping off tonight. Figure, 4 hours on the 12.4, and 2 on the 12.6 should bring them up to 12.8-13v. Hopefully the Noco doesn't seem as confused with these, as it was the others.

 

[ShadowsPapa]

Tested the Aux after work today, 10.2V, and the primary is already throwing aux switch errors again.

But, it looks like I'm replacing both batteries since local O'Reilly ordered both batteries for me, on Sat, unbeknownst to me... manager called a little while ago, and let me know they arrived if I still needed them.

So, picked up, and going to be swapping tomorrow. (Good thing, too.. remote start isn't working since I disconnected the aux for some oddball reason.. wife discovered that when we were going down to grab dinner)

94 shows at 12.6, and size 14 shows at 12.4... so both can use some topping off tonight. Figure, 4 hours on the 12.4, and 2 on the 12.6 should bring them up to 12.8-13v. Hopefully the Noco doesn't seem as confused with these, as it was the others.

Tip -
Always fully charge new batteries before installation.

 

[ecidiego]

Removing the fuse box is the LONG way. Buy 3 rivets and go through the fender liner. Takes minutes.

 

[Caspien]

Tip -
Always fully charge new batteries before installation.

Yep.. my dad would come back from the grave, and beat me, if I didn't

That said, wish to hell this noco had a friggen meter on it so I could monitor, the way I used to with the old 'Diehard' brick my dad had. The idiot lights aren't that useful, especially when it says it's fully charged, within 10 mins of plugging it in. The 12.6v one is already reporting fully charged, and in Maintenance mode already.. Suppose I shouldn't be too upset, since it was already reading 12.6, but still..expecting to see that 13 or so.

Will move onto the other battery, and see if it charges... as soon as I find bolts to screw into it..

 

[ecidiego]

Yep.. my dad would come back from the grave, and beat me, if I didn't

That said, wish to hell this noco had a friggen meter on it so I could monitor, the way I used to with the old 'Diehard' brick my dad had. The idiot lights aren't that useful, especially when it says it's fully charged, within 10 mins of plugging it in. The 12.6v one is already reporting fully charged, and in Maintenance mode already.. Suppose I shouldn't be too upset, since it was already reading 12.6, but still..expecting to see that 13 or so.

Will move onto the other battery, and see if it charges... as soon as I find bolts to screw into it..

NOCOs don't provide the correct voltage that C-Tek and other AGM charges do.

Blurb I had AI write since I'm lazy;

CTEK (e.g., MXS 5.0, CTEK PRO series)

Generally regarded as one of the best for AGM charging.

Provides a float/maintenance voltage around 13.6–13.8V, which is right in the safe range for long-term connection to AGM batteries.

Many models have an AGM mode, boosting absorption voltage to ~14.7V (what most AGM chemistries call for).

Float stage is well-regulated and won’t overcharge.


NOCO Genius (e.g., G3500, G7200, newer GENIUS10, etc.)

Earlier models sometimes floated closer to 13.2–13.3V. This is safe but a bit low for AGM, meaning batteries may never fully stay topped off.

Newer Genius models improved regulation but still tend to sit slightly under CTEK’s float voltage.

NOCO relies on “maintenance cycles” rather than a steady float, which can leave AGMs not 100% saturated over time.

 

[ShadowsPapa]

NOCOs don't provide the correct voltage that C-Tek and other AGM charges do.

Blurb I had AI write since I'm lazy;

CTEK (e.g., MXS 5.0, CTEK PRO series)

Generally regarded as one of the best for AGM charging.

Provides a float/maintenance voltage around 13.6–13.8V, which is right in the safe range for long-term connection to AGM batteries.

Many models have an AGM mode, boosting absorption voltage to ~14.7V (what most AGM chemistries call for).

Float stage is well-regulated and won’t overcharge.


NOCO Genius (e.g., G3500, G7200, newer GENIUS10, etc.)

Earlier models sometimes floated closer to 13.2–13.3V. This is safe but a bit low for AGM, meaning batteries may never fully stay topped off.



Newer Genius models improved regulation but still tend to sit slightly under CTEK’s float voltage.

NOCO relies on “maintenance cycles” rather than a steady float, which can leave AGMs not 100% saturated over time.

That's why I note a number of NOCO users have issues similar to this - didn't realize they didn't follow the full AGM cycles which require some higher voltages.
Some other battery chargers shut down and periodically "exercise" the battery which doesn't float it.

I also noted that my later JTs seemed to keep the voltages higher than my 2020 did. I noted quite a difference - several tenths of a volt.

 

[Caspien]

That's why I note a number of NOCO users have issues similar to this - didn't realize they didn't follow the full AGM cycles which require some higher voltages.
Some other battery chargers shut down and periodically "exercise" the battery which doesn't float it.

I also noted that my later JTs seemed to keep the voltages higher than my 2020 did. I noted quite a difference - several tenths of a volt.

Well, that's a little aggravating.. especially since how popular these things are with the Jeep community as a whole.

Even the size 14 is already reporting full charge. Upside, is after I took the H7 off the charger, it's at least showing 13v.

So, @ecidiego and @ShadowsPapa , what would be your recommendation for someone who currently (hah.. there's that dad joke, again) only has a Noco, but also needs to get their vehicle up and running?

Fully charge to that 13v, and then run it hard to push more into it? Won't the IBS limit it to that 13v, then, from there on out, if I'm understanding it? (Aka: won't let it charge higher than the level it was, when it was installed?)

The worst part about this, is that I'd been looking at a ctek MXS 5.0 (with multi car adapters, so I could pre-wire the wife's GC, too), and was 'talked out of it' by the O'Reily manager, who is another Jeeper.*grumbling*

 

[ShadowsPapa]

Well, that's a little aggravating.. especially since how popular these things are with the Jeep community as a whole.

Even the size 14 is already reporting full charge. Upside, is after I took the H7 off the charger, it's at least showing 13v.

So, @ecidiego and @ShadowsPapa , what would be your recommendation for someone who currently (hah.. there's that dad joke, again) only has a Noco, but also needs to get their vehicle up and running?

Fully charge to that 13v, and then run it hard to push more into it? Won't the IBS limit it to that 13v, then, from there on out, if I'm understanding it? (Aka: won't let it charge higher than the level it was, when it was installed?)

The worst part about this, is that I'd been looking at a ctek MXS 5.0 (with multi car adapters, so I could pre-wire the wife's GC, too), and was 'talked out of it' by the O'Reily manager, who is another Jeeper.*grumbling*

In a hurry? Do you have Amazon prime?

 

[ShadowsPapa]

Blurb I had AI write since I'm lazy;

Totally doubt that last part.

 

[Caspien]

In a hurry? Do you have Amazon prime?

Yep.. got prime.. gonna go ahead and bite the bullet, order that one, and just keep the noco as a spare, or maybe re-gift it to someone less OCD than me

 

[ShadowsPapa]

Yep.. got prime.. gonna go ahead and bite the bullet, order that one, and just keep the noco as a spare, or maybe re-gift it to someone less OCD than me

I have 2 cars, a lawn tractor, and 2 Jeeps to keep batteries maintained in.............. my JT being "the most critical" as it's the daily driver - however, don't tell my wife I said that. Her JLU (Rudolph) is critical to her. I just periodically charge the battery in it and it's been ok.
The lawn tractor and 2 cars take up 3 BatteryMinders over the winter months (non-AGM, ordinary wet batteries).
I think I have 6 battery chargers of various types here.
I also need to keep up the battery I use on my starter and alternator test bench.

 

[GypsyMech]

Do they give you a special stipend to live in Arizona? Seems to be a difficult place to live.

Beats California

 

[Caspien]

I have 2 cars, a lawn tractor, and 2 Jeeps to keep batteries maintained in.............. my JT being "the most critical" as it's the daily driver - however, don't tell my wife I said that. Her JLU (Rudolph) is critical to her. I just periodically charge the battery in it and it's been ok.
The lawn tractor and 2 cars take up 3 BatteryMinders over the winter months (non-AGM, ordinary wet batteries).
I think I have 6 battery chargers of various types here.
I also need to keep up the battery I use on my starter and alternator test bench.

Ok.. so congrats, sounds like you're at LEAST as OCD as I am

Truth is, wife's 2020 GC Trailhawk, also needs to have its batteries replaced, but they're a HELL of a lot easier to get to, and less of a PITA to swap out.

As for other batteries.. only got about 1/2 of an acre, for the yard size.. and no garage.. so just my workshop/shed out back.. but everything else is essentially EGO or Ryobi.. The EGO auto discharge after X amount of months (3 I think?) of no activity, to minimal charge, and the Ryobi, I only top off, before using them. (Li ION tends to NOT like being topped off continually) The Predator Backup that we carry with us, is a LiFEPo unit, so I try to keep it mostly topped off.. but it's also not even a year old, yet)

Don't get me started on all of the electronics... laptops, tablets, phones, power banks.. etc... it's like a never ending circus charging stuff up. I keep telling the wife, no wonder why I feel like I'm going insane.

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