NOCO and dead battery

[blackthought_]

So why the dead battery on a new Jeep?

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[SonofaSeabee]

Adding more info to this and also asking another question. Had the main battery replaced to get me going. Should I also replace the smaller aux battery? About two months after purchasing this Jeep brand new, I installed the auto stop/start eliminator so I didn't have to push the button at each start up, so in my thinking, I haven't used the aux battery really at all. But, if I replaced main battery, should I return to shop at some point and have aux battery replaced as well, even if not really used?

 

[Vanburi]

Fyi, did a little digging.
The Noco GB40 has a 1200mAh battery while the Jump N Carry 660 has a 22Ah battery.
The fact that you dumped all of your Noco juice into the battery before the tow truck guy helped for sure. The fact remains that the little lithium jump boxes have tiny batteries by comparison.

 

[rickinAZ]

Adding more info to this and also asking another question. Had the main battery replaced to get me going. Should I also replace the smaller aux battery? About two months after purchasing this Jeep brand new, I installed the auto stop/start eliminator so I didn't have to push the button at each start up, so in my thinking, I haven't used the aux battery really at all. But, if I replaced main battery, should I return to shop at some point and have aux battery replaced as well, even if not really used?

I wouldn't replace it, or remove it. I'd suggest merely bypassing it - five minute job.

 

[SonofaSeabee]

Fyi, did a little digging.
The Noco GB40 has a 1200mAh battery while the Jump N Carry 660 has a 22Ah battery.
The fact that you dumped all of your Noco juice into the battery before the tow truck guy helped for sure. The fact remains that the little lithium jump boxes have tiny batteries by comparison.

Very much appreciate your digging, makes sense. I went ahead and got the AAA guy Jump N Carry off Amazon. $135, figured what the hell, early birthday gift to myself. Will still keep the NOCO charged up and in Jeep along with the JNC660 when it comes. Thanks again!

 

[Vanburi]

Good plan for total coverage. The little jump packs serve their purpose well just, not good for a dead system.

 

[SonofaSeabee]

I wouldn't replace it, or remove it. I'd suggest merely bypassing it - five minute job.

I will research bypassing, for sure. If you happen to know of a write up on doing this on the forum, and if it is no trouble, can you post the link? No worries if it is NOT something at your arms reach, I can search around. Thanks friend!

 

[SonofaSeabee]

Good plan for total coverage. The little jump packs serve their purpose well just, not good for a dead system.

Just to clarify, my NOCO saying 2000A, is NOT more/better, than the JNC660 saying 1700A? In my mind, 2000 is better than 1700, but in reality, my NOCO is an orange and the JNC660 is an apple?

 

[Vanburi]

Apples to oranges yes. Little more gray area that I am unqualified to explain fully.
Yes, the Noco can provide a higher peak but I would guess for a much shorter time period. This is why it did not take long to go from 4 bars to 1 bar.

 

[AZ Hella]

OP, Did you use the manual overide feature on the GB70?

 

[SonofaSeabee]

OP, Did you use the manual overide feature on the GB70?

I researched that override too. According to the NOCO, I did not meet the criteria to use overide. When I hooked up NOCO to the battery, the indicator lights did chase, and the boost light did come on. Not sure why things didn't work out. Some answers in this thread could very well be the issue. My bigger head scratcher is why this OEM battery died 1yr 4months after purchase. There are/were no accesories/lights/etc left on after vehicle shut down to draw down battery. Mystery?

 

[AZ Hella]

I researched that override too. According to the NOCO, I did not meet the criteria to use overide. When I hooked up NOCO to the battery, the indicator lights did chase, and the boost light did come on. Not sure why things didn't work out. Some answers in this thread could very well be the issue. My bigger head scratcher is why this OEM battery died 1yr 4months after purchase. There are/were no accesories/lights/etc left on after vehicle shut down to draw down battery. Mystery?

Strange indeed.

 

[THAW]

Just to clarify, my NOCO saying 2000A, is NOT more/better, than the JNC660 saying 1700A? In my mind, 2000 is better than 1700, but in reality, my NOCO is an orange and the JNC660 is an apple?

2000 A is a current rate. Ah (amp hours) is a measure of capacity.

It's like the difference between how fast water comes out of a garden hose versus how much water ends up on the garden due to the time the hose is running.

The NOCO GB70 has about a 5 Ah capacity. At 22 Ah, the JNC660 capacity is nearly 5X larger.

JL Main and Aux/ESS batteries have a combined 80+ Ah capacity. So, the GB70 can restore about 6% and the JNC660 about 26% of JL start battery capacity.

The starter needs only a few hundred of the 2000 A to turn over the engine, but your bad batteries were sucking too much of the juice for the starter and the rest of the Jeep electronics to get what they needed. And even after the batteries sucked the little NOCO dry, they were too low to start the vehicle.

 

[THAW]

Adding more info to this and also asking another question. Had the main battery replaced to get me going. Should I also replace the smaller aux battery? About two months after purchasing this Jeep brand new, I installed the auto stop/start eliminator so I didn't have to push the button at each start up, so in my thinking, I haven't used the aux battery really at all. But, if I replaced main battery, should I return to shop at some point and have aux battery replaced as well, even if not really used?

The stop/start eliminator doesn't disconnect the Aux/ESS battery so your Aux/ESS battery and your main battery were being used together like one big battery.

The best way to know if a battery needs to be replaced is a battery test. If the main battery actually needed replacing, your Aux/ESS battery most likely does too.

 

[SonofaSeabee]

The stop/start eliminator doesn't disconnect the Aux/ESS battery so your Aux/ESS battery and your main battery were being used together like one big battery.

The best way to know if a battery needs to be replaced is a battery test. If the main battery actually needed replacing, your Aux/ESS battery most likely does too.

Thanks Thaw, much appreciated! I am researching the aux battery bypass now, the fuse pull/aux battery negative cable disconnect. Just need to see which negative cable, at the main battery, to disconnect/tape off/ tuck away. Any thoughts on this? Thanks again!

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