yoyofella
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Leaf Number: 2086
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Aftermarket 12kWh add-on

Thu Aug 23, 2012 4:41 pm

I am very interested!

link to the upgrade

link to article

What Enginer has done is develop a method of tapping into the Leaf's high voltage power system, to add additional battery capacity. Kit installation does not cut any wires, and the car can be returned to stock state at any time. The company claims it does not void the Leaf's warranty.

The kit consists of a large box containing a 48 volt lithium-iron-phosphate battery pack, and a DC-DC converter to step the voltage up to what's necessary for the Nissan Leaf. The box does take up room in the trunk area. The 4 kilowatt-hour model weighs 160 lbs, extends the driving range by 20 miles, and costs $3,495. The 8 kilowatt-hour model weighs 260 lbs, extends the driving range by 40 miles, and costs $5,495. The 12 kilowatt-hour model weighs 360 lbs, and costs $7,495. Enginer's battery pack is rated for 2,000 charge cycles. We should note that the miles of driving range Enginer quotes is similar to the "100 miles of driving range" that Nissan claims, when in fact the EPA certified range of the Leaf is 73 miles. That is to say we should expect the actual range extension to be less than the figure Enginer quotes, and the actual range extension will depend on driving habits.

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TonyWilliams
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Re: Aftermarket 12kWh add-on

Thu Aug 23, 2012 6:18 pm

At least two other threads already.

GaslessInSeattle
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Re: Aftermarket 12kWh add-on

Thu Aug 23, 2012 11:04 pm

the fact that it can't be quick charged is a bummer. long distance trips is where I run into range issues and quick charging frequently really adds time to a drive. a 130 mile pack would make a trip to Portland or Vancouver much faster with only one quick charge necessary. curious as to why the range of the 12kW pack isn't listed.
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KJD
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Re: Aftermarket 12kWh add-on

Fri Aug 24, 2012 5:40 am

GaslessInSeattle wrote:the fact that it can't be quick charged is a bummer. long distance trips is where I run into range issues and quick charging frequently really adds time to a drive. a 130 mile pack would make a trip to Portland or Vancouver much faster with only one quick charge necessary. curious as to why the range of the 12kW pack isn't listed.


It looks to me like these will be available within a years time. The only difference is the car will have a Tesla emblem on it instead of a Nissan emblem.

http://www.teslamotors.com/models/features#/battery

Oh yea and it will cost about 50k instead of 30k, but whats a few dollars among friends.
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yoyofella
Posts: 101
Joined: Thu May 26, 2011 1:59 pm
Delivery Date: 27 May 2011
Leaf Number: 2086
Location: San Francisco, CA

Re: Aftermarket 12kWh add-on

Fri Aug 24, 2012 8:31 am

edit: didn't realize this was already in Range extender thread (though I think aftermarket battery upgrade deserve it's own thread).


yoyofella wrote:I am very interested!

link to the upgrade

link to article

What Enginer has done is develop a method of tapping into the Leaf's high voltage power system, to add additional battery capacity. Kit installation does not cut any wires, and the car can be returned to stock state at any time. The company claims it does not void the Leaf's warranty.

The kit consists of a large box containing a 48 volt lithium-iron-phosphate battery pack, and a DC-DC converter to step the voltage up to what's necessary for the Nissan Leaf. The box does take up room in the trunk area. The 4 kilowatt-hour model weighs 160 lbs, extends the driving range by 20 miles, and costs $3,495. The 8 kilowatt-hour model weighs 260 lbs, extends the driving range by 40 miles, and costs $5,495. The 12 kilowatt-hour model weighs 360 lbs, and costs $7,495. Enginer's battery pack is rated for 2,000 charge cycles. We should note that the miles of driving range Enginer quotes is similar to the "100 miles of driving range" that Nissan claims, when in fact the EPA certified range of the Leaf is 73 miles. That is to say we should expect the actual range extension to be less than the figure Enginer quotes, and the actual range extension will depend on driving habits.

adric22
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Re: Aftermarket 12kWh add-on

Fri Aug 24, 2012 9:06 am

I feel I really need to chime in here. I would not use this product under any circumstances in a Leaf.

I used to be an installer for Enginer and I like their product and like what they are trying to do. But lets face it, their products are unreliable. Pretty much everyone who has ever had one of these in their Prius has experienced 2 or 3 failures. Enginer is always quick to send a replacement part and honors their warranty, though.

Here's the problem. If you have this product in your Prius and it stops working (which it will, guaranteed) then you will just end up burning more gasoline that day and for the next several days after until your replacement part arrives. In the Leaf, however, it is a different story. If you work 100 miles away and you plan to use this product for more range so that you can reach your work, then what happens when it breaks? Not only are you going to run out of juice and be stranded, but you won't even be able to make the journey to work again until the part arrives.

If you need more range my advice is get a Volt, Tesla, or Rav4, or whatever..
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ztanos
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Re: Aftermarket 12kWh add-on

Fri Aug 24, 2012 10:37 am

adric22 wrote:I feel I really need to chime in here. I would not use this product under any circumstances in a Leaf.

I used to be an installer for Enginer and I like their product and like what they are trying to do. But lets face it, their products are unreliable. Pretty much everyone who has ever had one of these in their Prius has experienced 2 or 3 failures. Enginer is always quick to send a replacement part and honors their warranty, though.

Here's the problem. If you have this product in your Prius and it stops working (which it will, guaranteed) then you will just end up burning more gasoline that day and for the next several days after until your replacement part arrives. In the Leaf, however, it is a different story. If you work 100 miles away and you plan to use this product for more range so that you can reach your work, then what happens when it breaks? Not only are you going to run out of juice and be stranded, but you won't even be able to make the journey to work again until the part arrives.

If you need more range my advice is get a Volt, Tesla, or Rav4, or whatever..



This is good advice seeing as I didn't know about the Prius battery mod issues. However, I for one wouldn't use gas, spend more money or get a car that isn't available in my area. However, I may be smart enough to not use this to guarantee my ride to work either. I think this would be my anti-range anxiety cure. That way, if it does break, I can still make it somewhere. So thanks again for the solid advice, sir.

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gbshaun
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Re: Aftermarket 12kWh add-on

Fri Aug 24, 2012 12:19 pm

This sounds like a terrific option, and could make all the difference for some drivers whose LEAF doesn't quite have the range for their commute.
I may consider it in a few years if my 55mi freeway r/t becomes a challenge (or requires me to get EV's a bad reputation by slowing traffic!).

How does this work with the LEAF's display? Does the car include the additional capacity in the projected range?

We know reduced capacity = fewer capacity bars (but still max 12 charge bars), so what does increased capacity do?... presumably 12 capacity bars, but will the charge bars stay on 12 for many miles, or will each bar now represent ~1.7, 2.0, 2.3 kWh ?

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adric22
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Re: Aftermarket 12kWh add-on

Fri Aug 24, 2012 7:10 pm

gbshaun wrote:We know reduced capacity = fewer capacity bars (but still max 12 charge bars), so what does increased capacity do?... presumably 12 capacity bars, but will the charge bars stay on 12 for many miles, or will each bar now represent ~1.7, 2.0, 2.3 kWh ?

It just feeds extra power into the main battery. The Leaf will not understand where the power is coming from.

In the Prius, the typical setup will pump power right into the main battery terminals which means it will flow through the current sensor in the battery pack. The Prius would allow a certain amount of amps (I think around 14) before producing an engine trouble code. If you had a scangauge you could actually see the amps change when turning on or off the enginer kit. So the car was aware of the power, but didn't know where it came from.

In the Leaf, I would imagine it would be pretty similar. I would suspect the leaf will drain power much more quickly than the enginer kit could possibly replenish. Which means all it would do is slow the progress down of your battery depletion. You would simply get slightly more miles from each bar of power.

As to how the guess-o-meter would respond to this is anyones guess. It would depend on whether the leaf would take the extra power it sees going into the battery (assuming the Leaf has a current sensor in the battery pack) into consideration when making its estimate?
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dickson31955
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Re: Aftermarket 12kWh add-on

Sat Aug 25, 2012 7:19 am

So - what does the extra 180 lbs do for the rear suspension? Is the Leaf now a 4 passenger auto or do you need to beef up the suspension?

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