Do I have a bad alternator

[Gorilla57]

Yeah.... It is gonna be brutal. I regret buying an odyssey. Shouldve gone to O'Reilly's or something.

I have 3 Odyssey batteries in my JL (Genesis system and AAL rear battery setup) and I'm getting the 2 batteries under the hood warrantied and then looking into replacing the rear battery with a LiFePO4 setup. I'm done with Odyssey too, can't believe 8-10 weeks for a warranty replacement. Luckily I have a 2nd vehicle to drive in the mean time. I can replace the rear battery with a LiFePO4 battery and add in a DC-DC charger for the same price as another Odyssey.

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[Beachcomber72]

Disregard my above post because I just saw your edit of no parasitic drain.

 

[mwilk012]

Sounds like your battery is a PoS.

 

[Beachcomber72]

Are you load testing it with the surface charge removed? As mentioned above sounds like battery is kaput…

 

[TaiMc]

*edit:

There is no parasitic draw. When I connect my ampmeter it turns something on and I guess the computer draws energy for 30 seconds. After 30 seconds the amp draw drops to about 0.3A. So I am back to square 1.

I am charging my battery now that I updated the tazer we will see how this goes. If my battery dies again I am gonna have to charge it and let it rest unplugged to see if it drains. If that happens then this is just a bad battery. Sucks I will have to try to get a warranty replacement. It is an odyssey, not exactly a cheap battery.

A Jeep guy once told me that the Jeep needs to be ran on two batteries, not one. I keep reading about folks who have successfully bypassed the use of the aux and when I asked him should I do this, he recommended against it. He said that the JLs rely on so much electronics that the system really needs to be powered with two batteries not one.

He recommended I get the genesis setup, but I told him no bc I felt like it was too pricey. He then recommended that I either put the Jeep on a tender if it sat for a week or longer or drive it regularly. It is my daily driver so it gets driven at least every 2 days.

Hope you figure this out.

??‍

 

[mwilk012]

My Jeep gets driven every two weeks or less. Battery is always fully charged. Good quality batteries is all it takes.

 

[TaiMc]

My Jeep gets driven every two weeks or less. Battery is always fully charged. Good quality batteries is all it takes.

Which brand are you running?

 

[mwilk012]

Which brand are you running?

Interstate MTZ-48, and their aux-14. The Z line isn’t made in the 94 size but it has a 4 year free replacement warranty and there just isn’t a good enough reason to get the lesser 94R/H7.

 

[entropy]

Sounds like your battery is a PoS.

Yeah I got a shit expensive battery. Shoulve gone interstate

 

[entropy]

Are you load testing it with the surface charge removed? As mentioned above sounds like battery is kaput…

Yeah it passes load test after sitting for almost 24hrs. It is fine but after 3~4 days even if I drive it dies. It dies suddenly too. Yesterday it was measuring 12.6V this morning it was 11V.

It is a crap battery I am sure.

 

[Beachcomber72]

Yeah it passes load test after sitting for almost 24hrs. It is fine but after 3~4 days even if I drive it dies. It dies suddenly too. Yesterday it was measuring 12.6V this morning it was 11V.

It is a crap battery I am sure.

Ok, was just curious if it was with or without a surface charge. Usually 5 minutes of headlights on is a good start, then load test it. But it sounds as if the general consensus is battery failure.

 

[entropy]

So just an update for anyone having these issues. It appears my battery is now "fixed". As it is holding charge.

I called my cousin and he told me based on what I was telling him the battery probably had minor damage in it from sitting depleted.

The first time I found my battery dead we came back from an almost 2 week trip and the voltage was 10.8. who knows how long it was sitting at that voltage. I brought it back with a noco 5 charger that time but it behaved funny.

So on these forums someone said odyssey batteries need higher amps than usual to come back to life. So I got myself a Noco 10.

Long story short. I plugged the Noco 10 for 24hrs. Then ran the "repair mode". Then charged again. Then repair mode. I think i did this about 3 or 4 times.

The battery is now holding charge. At least for the past 3 days without driving battery reads 12.65 volts and passes load tests with over 1000 CAs. Battery is rated 850 CCA, but it is about 70 degrees outside so 1000 is normal. I ran the radio with music for 30mins and battery still fully charged.

So my guess is the Tazer killed the battery when we went on a trip, the battery sat without charge for a few days and there was some minor sulfation that seems to have been fixed by the Noco.

I could send this battery for warranty replacement but it would be an extreme hassle. So ill live with this battery even though it might never be like new. Lesson learned I guess.

 

[Gorilla57]

So just an update for anyone having these issues. It appears my battery is now "fixed". As it is holding charge.

I called my cousin and he told me based on what I was telling him the battery probably had minor damage in it from sitting depleted.

The first time I found my battery dead we came back from an almost 2 week trip and the voltage was 10.8. who knows how long it was sitting at that voltage. I brought it back with a noco 5 charger that time but it behaved funny.

So on these forums someone said odyssey batteries need higher amps than usual to come back to life. So I got myself a Noco 10.

Long story short. I plugged the Noco 10 for 24hrs. Then ran the "repair mode". Then charged again. Then repair mode. I think i did this about 3 or 4 times.

The battery is now holding charge. At least for the past 3 days without driving battery reads 12.65 volts and passes load tests with over 1000 CAs. Battery is rated 850 CCA, but it is about 70 degrees outside so 1000 is normal. I ran the radio with music for 30mins and battery still fully charged.

So my guess is the Tazer killed the battery when we went to a trip, the battery sat without charge for a few days and there was some minor sulfation that seems to have been fixed by the Noco.

I could send this battery for warranty replacement but it would be an extreme hassle. So ill live with this battery even though it might never be like new. Lesson learned I guess.

Thanks for the update. I finally got my warranty batteries from Odyssey and the Jeep hasn't started that good in a long time. I may try the repair mode on the old Odyssey batteries and see if I can save them. If not, they go to recycling. But not holding my breath, the batts weren't holding a full charge and when load tested said 200CCA.

 

[entropy]

Thanks for the update. I finally got my warranty batteries from Odyssey and the Jeep hasn't started that good in a long time. I may try the repair mode on the old Odyssey batteries and see if I can save them. If not, they go to recycling. But not holding my breath, the batts weren't holding a full charge and when load tested said 200CCA.

Oh yeah that sounds pretty bad. Mine even when they were draining overnight when fully charged would start the jeep im a second and would pass load tests reading 1000+

 

[entropy]

Well this story continues.

After the battery was fine for over a week, I woke up to a dead Jeep a couple days ago... Tried charging it but nothing. It wouldnt hold charge.

I proceeded to get a warranty replacement but theyre backordered so impact battery gave me a refund instead, very nice of them.

I wont be buying a battery online again anyway. So I drove to advanced auto parts and got myself a diehard platinum 94R H7 (the bigger battery).

We will see how this goes. I will be monitoring this new battery very closely.

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