Aftermarket alternator?

[Terrymo]

Yes, but you've mixed things up, again. This, like over-the-top reference to Jonestown Kool-Aid induced herd behavior, is my feeble attempt at humor. A cantankerous post from me would go something like this,

Who knew, that with a thread title like "Aftermarket Alternator," the OP wanted to hear from JL owners who use NOCO Genius 10 chargers with the Genesis 2 battery system? Does a JL owner like me, who has that very charger, and has been personally familiar with, and use, ACRs like these, which are essential to Genesis systems, qualify for posting? Should I tell the OP that NOCO literature and other available information does not indicate a continuous regulated float stage suitable for charging in circuits with funky loads? Should I disclose why I think ACRs are not appropriate for JLs unless the owner regularly uses a winch or other high loads (like after converting a Jeep to RV status)? Should I mention that triggering parameters need to be compatible for power sources and ACRs to work properly?

The answer is no, I'm not going to get into a discussion about OP specified qualifications for posting. Instead, I'm going to wait. The schadenfreude will be overwhelming if it turns out the OP made the Genesis mod to "better" ESS operation during his 50 miles per week driving.

I added a dual battery set up in an older GMC Sierra 4x4 using a Blue Sea 7622 and thought it was a simple solution. For those of us who nod off in the battery forum, in simple and short terms, why not use an ACR with dual batteries in the JL instead of the Genesis system? Thanks

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[azjl#3]

Not a fan of NAPA myself. Have you looked at Rockauto? They typically have a few options and reputable brands. You have such low miles!

and you pay for every return, no free shipping anymore on returns as i understand.

AutoZone or napa or orielly local, find the right part online and it waits at the counter. No exchanges refunds on electrical, thats industry standard.

 

[Mguy]

I added a dual battery set up in an older GMC Sierra 4x4 using a Blue Sea 7622 and thought it was a simple solution. For those of us who nod off in the battery forum, in simple and short terms, why not use an ACR with dual batteries in the JL instead of the Genesis system? Thanks

No reason not to use any ACR that electically fits a particular application. Genesis, of course, comes with JL convenient hardware as well.

The primary issue JL owners will always face is "why." Dual banks are not very useful for most Jeep owners, so why reduce overall reliability with additional equipment, unless the benetits are truly worth it.

Edit,
Also worth mentioning, although may be obvious to experienced dual bank users,

ACRs are designed and intended for dual banks when only a single circuit charging source, like an alternator, is available. AC battery chargers are available with multiple charging circuits, and they are more appropriate for plug-in multiple bank charging.

 

[Terrymo]

No reason not to use any ACR that electically fits a particular application. Genesis, of course, comes with JL convenient hardware as well.

The primary issue JL owners will always face is "why." Dual banks are not very useful for most Jeep owners, so why reduce overall reliability with additional equipment, unless the benetits are truly worth it.

Edit,
Also worth mentioning, although may be obvious to experienced dual bank users,

ACRs are designed and intended for dual banks when only a single circuit charging source, like an alternator, is available. AC battery chargers are available with multiple charging circuits, and they are more appropriate for plug-in multiple bank charging.

I used a Minn Kota 2 bank x 10 amp charger at the time. Not very compact. We also had quads and used a Noco Wall Mount that had 4 banks. Also quite a bit larger than what’s available now

 

[THAW]

 

[jaymz]

On these alternators we usually see them fail when the “clutch” goes bad and the pulley is just freewheeling. I’ve seen new Mopar alternators last less than 5000 miles before doing the same thing. It’s rough out there for parts.

I actually changed the pulley on mine a couple of years ago. I noticed it slinging oil and figured it would be best to proactively replace it.

 

[Whaler27]

Well, to just test, you can simply use one of the batteries by putting both cables on one. Might have to remove one battery to get it oriented where the cables reach. That's my plan next.

As for eliminating the Genesis, seems like just running them in parallel should work.

I suspect this is where I’ll land.

 

[Whaler27]

Who knew, that with a thread title like "Aftermarket Alternator," the OP wanted to hear from JL owners who use NOCO Genius 10 chargers with the Genesis 2 battery system?

Anybody who read the thread, and had experience with my combination of modifications and uses, might have something useful to add.

But those who didn’t read the thread and/or had no familiarity with any of the systems or components were probably as lost as you were. Fortunately, generally, folks with no knowledge of the topic or components being discussed, don’t feel obliged to contibute.

If you stick around for a while, and you actually read through the threads, you‘ll see lots of folks ask for help diagnosing problems they’re having with their heavily modified jeeps. You’ll learn about how various modifications interact with others, and how capable people have worked through related challenges. Since the lion’s share of people on this forum modify their jeeps, there’s a wealth of helpful experience, particularly with respect to the most common modifications/components/accessories.

I asked about aftermarket alternators because I believed that my alternator was bad. The discussion flowed from there as part of the group exchange and diagnosis. That’s how the forum works, and I’m grateful for it.

The Genesis dual battery system has been discussed extensively here, and many or most tenured forum participants are familiar with the Noco ”smart chargers”.

The trick is not to feel obliged to weigh in when the topic and all related components are foreign to you.

I love the quote, “Tis better to remain silent and be thought a fool, than to open your mouth and remove all doubt”.

 

[Terrymo]

Anybody who read the thread, and had experience with my combination of modifications and uses, might have something useful to add.

But those who didn’t read the thread and/or had no familiarity with any of the systems or components were probably as lost as you were. Fortunately, generally, folks with no knowledge of the topic or components being discussed, don’t feel obliged to contibute.

If you stick around for a while, and you actually read through the threads, you‘ll see lots of folks ask for help diagnosing problems they’re having with their heavily modified jeeps. You’ll learn about how various modifications interact with others, and how capable people have worked through related challenges. Since the lion’s share of people on this forum modify their jeeps, there’s a wealth of helpful experience, particularly with respect to the most common modifications/components/accessories.

I asked about aftermarket alternators because I believed that my alternator was bad. The discussion flowed from there as part of the group exchange and diagnosis. That’s how the forum works, and I’m grateful for it.

The Genesis dual battery system has been discussed extensively here, and many or most tenured forum participants are familiar with the Noco ”smart chargers”.

The trick is not to feel obliged to weigh in when the topic and all related components are foreign to you.

I love the quote, “Tis better to remain silent and be thought a fool, than to open your mouth and remove all doubt”.

Despite all the friction occurring here, I wonder if there is some value to using a dual bank battery charger? Maybe @THAW has some thoughts.

 

[THAW]

Despite all the friction occurring here, I wonder if there is some value to using a dual bank battery charger? Maybe @THAW has some thoughts.

I use a dual-bank NOCO.. But, I have only the Genesis tray - not the hub - so my batteries aren't ever directly connected (they're connected via a DC-DC charger).

Using a dual-bank charger with a Genesis gen 2 hub isn't very practical. A gen 3 hub is more readily compatible because of the manual disconnect feature, but the manual connect feature can just as easily disables the Genesis system for a single bank charger.

 

[Terrymo]

I use a dual-bank NOCO.. But, I have only the Genesis tray - not the hub - so my batteries aren't ever directly connected (they're connected via a DC-DC charger).

Using a dual-bank charger with a Genesis gen 2 hub isn't very practical. A gen 3 hub is more readily compatible because of the manual disconnect feature, but the manual connect feature can just as easily disables the Genesis system for a single bank charger.

Ok so next question which you may have answered for me once already regarding a JL. Why not a dual battery set up with a Blue Sea magnetic latching relay charged by a dual bank Noco or similar?

i thought the value of a dc to dc charger was to eliminate large capacity wiring to a remote battery. What is the advantage to a DC to DC charger with two batteries right next to each other over a Blue Sea ACR or MLR?

My brain really liked the dumbness of the set up, and my OCD the visual simplicity. I suspect a 2000 GMC Sierra 4x4 and the more modern JL have different charging requirements while driving,

 

[Mguy]

Despite all the friction occurring here, I wonder if there is some value to using a dual bank battery charger? Maybe @THAW has some thoughts.

Where are the "Duh" memes?

But really, this isn't fun. Not quite as bad as being asked by a know-it-all acquaintance to help install an aftermarket 2 battery set-up so his JL can go 50 miles a week with 5 ESS stops on each trip. Still, the antidote for this variety of forum over consumption is not obvious, so I wish others success. But I'm out and not going further in this thread.

 

[Whaler27]

Ok so next question which you may have answered for me once already regarding a JL. Why not a dual battery set up with a Blue Sea magnetic latching relay charged by a dual bank Noco or similar?

i thought the value of a dc to dc charger was to eliminate large capacity wiring to a remote battery. What is the advantage to a DC to DC charger with two batteries right next to each other over a Blue Sea ACR or MLR?

My brain really liked the dumbness of the set up, and my OCD the visual simplicity. I suspect a 2000 GMC Sierra 4x4 and the more modern JL have different charging requirements while driving,

For me, the biggest advantages of the Genesis dual battery system were increasing the total battery capacity and eliminating the difficult-to-access OEM motorcycle battery. Isolating the accessory battery made sense to me too, but if everything else is working properly that matters much less. The “jump start“ feature is worthless to me, as it hasn’t worked in the past and it’s easy to carry a little jump-pack. If the set-up you describe here would work, that would be great.

 

[Jeep Wick]

and you pay for every return, no free shipping anymore on returns as i understand.

AutoZone or napa or orielly local, find the right part online and it waits at the counter. No exchanges refunds on electrical, thats industry standard.

I understand. I've found that even with shipping, rockauto is a good choice. They have a new one literally $35, and a 240 amp lifetime warranty no core charge for $269. Fedex shipping $18.
O'Reilly has a Denso for $382, which I would consider. Still cheaper than the Mopar part.

 

[Whaler27]

I wonder if there is some value to using a dual bank battery charger? Maybe @THAW has some thoughts.

I have one of these hooked up to a pair of Honda Monkeys, but I’ve hooked the Genesis up to a single charger according to the direction provided by Genesis — with the positive going to the starting battery positive terminal and the negative lead going to the negative post on the accessory battery.

The senior technician at the closest Batteries Plus has been a reliable source of information on all things battery. He thought this was a bad set up, because it would not produce equal SOC between the batteries.

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