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  #97  
Old 07-24-2015, 11:31 PM
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WK2 - New battery type and location

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Originally Posted by peckmv View Post
I thought that too but the passenger compartment gets well over 150 degrees just sitting on a hot day. I believe that space was the main factor.

I haven't measured, but how hot do you think the underwood temps on a diesel or a hemi get going up a serious grade when it 100+ outside? I'd be willing to bet it's at least 150 also.

I'm thinking space was the key factor and handling was an added bonus!

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  #98  
Old 07-25-2015, 09:10 AM
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Re: WK2 - New battery type and location

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Originally Posted by BobT View Post
There is a big difference in having 50lbs under the floor than having it high up in the engine bay. Angular moment of inertia is proportional to mr2. In this case one could call the angular moment of inertia the overturning force. "m" is the mass of the battery, "r" is the radius or in this case, the distance above the ground. Because "r" is squared it means that if the battery were twice as high, the overturning force would be 4 times as great. On my car, the centre of the battery is about 0.5m high. In the traditional location, it would be about 1.1m high so the overturning force would be 4.8 times as great. They don't build sports cars low to the ground just for looks.
This Jeep is not a sports car. Its a vehicle that hauls and can have up to 5 people in it, along with cargo. A low mount 50lb battery is not going to do a thing to help any performance with a load.
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  #99  
Old 07-25-2015, 09:13 AM
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Re: WK2 - New battery type and location

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Originally Posted by farfromovin View Post
I haven't measured, but how hot do you think the underwood temps on a diesel or a hemi get going up a serious grade when it 100+ outside? I'd be willing to bet it's at least 150 also.

I'm thinking space was the key factor and handling was an added bonus!
I hear ya. I also think its all about space. Handling.... not so much.
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  #100  
Old 07-25-2015, 09:05 PM
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Re: WK2 - New battery type and location

Quote:
Originally Posted by peckmv View Post
This Jeep is not a sports car. Its a vehicle that hauls and can have up to 5 people in it, along with cargo. A low mount 50lb battery is not going to do a thing to help any performance with a load.
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  #101  
Old 07-26-2015, 08:02 AM
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Re: WK2 - New battery type and location

Watching that video... it didn't surprise me in the least to see the GC handle the way it did. I've had that impression of it from the moment I first drove one. It has all of the handling manners of a Mississippi River barge.

We don't have moose around here but we do have one of the largest whitetail deer populations in the country, so the ability to avoid them is a serious one.
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  #102  
Old 07-26-2015, 10:21 AM
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Re: WK2 - New battery type and location

I remember watching that video back in early 2013 when I was looking. I even showed it to my dealer, he was not impressed and just kept repeating jeep is the most awarded SUV ever lol. I guess jeep corporate was not pleased either and took it seriously and fixed the handling problem. the 2014+ is below after the fix.

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  #103  
Old 07-26-2015, 10:49 AM
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Re: WK2 - New battery type and location

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Originally Posted by silvermax04 View Post
I remember watching that video back in early 2013 when I was looking. I even showed it to my dealer, he was not impressed and just kept repeating jeep is the most awarded SUV ever lol. I guess jeep corporate was not pleased either and took it seriously and fixed the handling problem. the 2014+ is below after the fix.
I'm still not impressed with the steering feel and reaction and hope I never have to put it to the test. It feels like my early build 14 would still have the 11-13 characteristics shown in the previous video.
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  #104  
Old 07-26-2015, 04:33 PM
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Quote:
Originally Posted by MDBones View Post

I'm still not impressed with the steering feel and reaction and hope I never have to put it to the test. It feels like my early build 14 would still have the 11-13 characteristics shown in the previous video.
It is a heavy thing. One thing that i attribute to the bouncing ball, rolly polly feeling is those fortera tires. I couldnt stand that bouncing destablizing feeling they had, i only kept them for 10k miles, vast improvement with a good tire on it. On the 2016s Jeep got the message after 5 years and are putting decent tires on it finally.
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  #105  
Old 07-26-2015, 07:10 PM
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Re: WK2 - New battery type and location

Wasnt the Jeep in that video discovered to be overloaded after Jeep engineers couldnt replicate the results?
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  #106  
Old 07-26-2015, 08:36 PM
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Re: WK2 - New battery type and location

Quote:
Originally Posted by silvermax04 View Post
It is a heavy thing. One thing that i attribute to the bouncing ball, rolly polly feeling is those fortera tires. I couldnt stand that bouncing destablizing feeling they had, i only kept them for 10k miles, vast improvement with a good tire on it. On the 2016s Jeep got the message after 5 years and are putting decent tires on it finally.
Yeah. Not much I can do for mine. It's a lease going back next May. Hopefully the next one will have better tires like Milous mentioned in the 2016 thread.
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  #107  
Old 07-26-2015, 08:48 PM
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Re: WK2 - New battery type and location

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Originally Posted by indydof View Post
Wasnt the Jeep in that video discovered to be overloaded after Jeep engineers couldnt replicate the results?
Nope. It was loaded but under the max payload rating.
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  #108  
Old 07-28-2015, 08:43 AM
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Re: WK2 - New battery type and location

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Originally Posted by farfromovin View Post
I haven't measured, but how hot do you think the underwood temps on a diesel or a hemi get going up a serious grade when it 100+ outside? I'd be willing to bet it's at least 150 also.
This is why I'm laughing at this whole thing. Still more "manufacturing improvements" that amount to a bigger, more involved, more expensive PITA. I'm seeing zero advantage to this, especially for desert dwellers like myself. Here in Phoenix, like much of the desert Southwest, the June and July Summertime temperatures can climb to over 115 F daily. Under the hood, in a hot garage they can remain over 150+ for hours on end. This for over 4 months out of the year. It's about the equivalent of putting your battery in the oven in June, and taking it out at the end of September when it finally starts to cool off.

Because of this, I have never gotten more than 2 full Summers out of a battery here. And not only that, but unlike in temperate climates, you get no warning. The car will start fine, and then the next time it's as if someone cut the battery cable, nothing. The dome light won't even go on. I've been lucky through the years, and have only been stranded one time at the local supermarket, about a mile from my house. All the rest managed to fail at home, in the garage.

Now why would anyone living out here in their right mind, want to invest in a $400.00+ battery? It's absolutely absurd. From what I'm gathering from reading my owners manual, the battery in my new 2015 Jeep Grand Cherokee is located under the passenger seat. While this might help in keeping the battery cooler than placing it under the hood, I can't help but wonder what a PITA it is going to be to change it out? Is the damn seat going to have to be removed?

I just don't understand why manufacturers continually do this type of thing? A more expensive battery located in a far more difficult location to change out. How does this "improve" anything? So now what? I wait until it takes a dump God knows when, then I have to have it towed into a dealer, (again God knows which one or where), if it takes a dump out of town. And then have to pay some ridiculous amount to have another one installed. A major, expensive, time consuming project that used to be a 15 minute, $65.00 job tops. And for what?
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