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Ingineer
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Re: What is a "Gid"?

Sun Feb 12, 2012 3:48 pm

Stoaty wrote:
Ingineer wrote:The "gids" will read lower as the battery ages, as the stored kWh will be lower.

Does this mean that the number of gids reading on a properly balanced and fully charged battery is a good proxy for battery capacity?
It's not a "proxy", as I've stated many times, a "Gid" is 80 watt-hours. It's actual stored capacity. Also, you will never get it "fully" charged, at least not without bypassing Nissan's systems.

-Phil
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Stoaty
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Re: What is a "Gid"?

Sun Feb 12, 2012 5:58 pm

Ingineer wrote:It's not a "proxy", as I've stated many times, a "Gid" is 80 watt-hours. It's actual stored capacity. Also, you will never get it "fully" charged, at least not without bypassing Nissan's systems.

By "fully" I mean charge to 100% on Nissan's scale (which is actually 94% SOC as you have pointed out).
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Stoaty
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Re: What is a "Gid"?

Fri Feb 17, 2012 2:17 pm

Has anyone noticed a difference in the number of Gids after a full charge based on the ambient (and presumably battery) temperature? For example, do you see the same maximum value after charging the battery at 50 degrees in the winter versus after charging it at 70 degrees in the summer? My Gids after a full charge are a bit lower than I recall from the summer. I am wondering if this is due to the 20 degree drop in average temperature, or if I have permanently lost those Gids. :(
2011 Leaf with 62,000 miles given to Nephew
2013 Tesla Model S85 with 251 miles rated range at full charge
Leaf Spy Manual
Battery Aging Model Spreadsheet

DaveinOlyWA
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Re: What is a "Gid"?

Fri Feb 17, 2012 3:54 pm

Mine bounce up and down from 272-280 also I have lost a few GIDs if the car sat several hours after charging as well
Last edited by DaveinOlyWA on Fri Feb 17, 2012 6:18 pm, edited 1 time in total.
2011 SL; 44,598 miles. 2013 S; 44,840 miles. 2016 S30; 18,297 miles. 363 GIDs, Ahr 82.34, Hx; 100.00% kwh 28.1 QCs 165, L2's 190
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jkirkebo
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Re: What is a "Gid"?

Fri Feb 17, 2012 6:06 pm

Stoaty wrote:Has anyone noticed a difference in the number of Gids after a full charge based on the ambient (and presumably battery) temperature? For example, do you see the same maximum value after charging the battery at 50 degrees in the winter versus after charging it at 70 degrees in the summer? My Gids after a full charge are a bit lower than I recall from the summer. I am wondering if this is due to the 20 degree drop in average temperature, or if I have permanently lost those Gids. :(


I don't think temperature has anything to do with it. I got 282 twice a few days ago, in 10 F temperatures.

This was after starting a "top off" charge manually by pressing the timer override button. Before "topping off" the value was at 279. I have a 80% timer set.

Levenkay
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Leaf Number: 19196
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Re: What is a "Gid"?

Sat Feb 18, 2012 6:41 pm

Argh! I am also embarrassed by not knowing what a "GID" might be, so this thread's title was an immediate attention getter. I presume somewhere in its ten pages of postings there is an actual answer to the title question, but I can't seem to arrange the display to find it. I've got "sort by post date selected", but I find that the first item on "page 1 of 10" has a post time within a week of the last item on "page 10 of 10". Phooey; and I thought these BBC-powered fora were more standardized..

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TonyWilliams
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Re: What is a "Gid"?

Sat Feb 18, 2012 7:53 pm

It is data from the car that is presented in about 281 units, that indicate the energy in the battery. 281 is a full battery, zero is empty. Each unit has approximately 70 to 80 watt/hours of energy. Unfortunately, the value is not a fixed amount, as batteries with various temperatures (and thus various energy) may have the same Gid number.

As the battery loses capacity, either through capacity loss of the battery through cycles or time, or from energy expended, will reduce the Gid count.

It's named after "garygid", whose product can display this number for the operator.


Levenkay wrote:Argh! I am also embarrassed by not knowing what a "GID" might be, so this thread's title was an immediate attention getter. I presume somewhere in its ten pages of postings there is an actual answer to the title question, but I can't seem to arrange the display to find it. I've got "sort by post date selected", but I find that the first item on "page 1 of 10" has a post time within a week of the last item on "page 10 of 10". Phooey; and I thought these BBC-powered fora were more standardized..

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Nekota
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Re: What is a "Gid"?

Sat Feb 18, 2012 8:52 pm

Levenkay wrote:Argh! I am also embarrassed by not knowing what a "GID" might be, so this thread's title was an immediate attention getter. I presume somewhere in its ten pages of postings there is an actual answer to the title question, but I can't seem to arrange the display to find it. I've got "sort by post date selected", but I find that the first item on "page 1 of 10" has a post time within a week of the last item on "page 10 of 10". Phooey; and I thought these BBC-powered fora were more standardized..


Gids was first suggested by member 91040 in this post

viewtopic.php?f=44&t=5582&start=10#p129689

Gids represent the State of Charge (SOC) of the battery pack and gets it's name from member garygid from his development contributions to a meter to log and analyze the CAN bus on the LEAF to find the SOC messages.
Res 20Apr2010 / Ordered 27Sep2010 / Delivered 12May2011

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Levenkay
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Re: What is a "Gid"?

Mon Feb 20, 2012 1:08 pm

Nekota wrote:Gids was first suggested by member 91040 in this post

viewtopic.php?f=44&t=5582&start=10#p129689

Gids represent the State of Charge (SOC) of the battery pack and gets it's name from member garygid from his development contributions to a meter to log and analyze the CAN bus on the LEAF to find the SOC messages.
Thank's for the answer! I wonder if Gary expected hi's fame?

powersurge
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Re: What is a "Gid"?

Mon Nov 02, 2015 6:54 am

I have just gotten the obd2 module and the Leafspy Pro app. I have read all of the responses on this thread, but still have not gotten the significance of the "GID". I understand that at full charge, a GID value of 281 is the highest possible, but I still would like to know the value of this information as time goes on. Is there a table of "perfect" values over time that shows that the battery is in good nick? I am not an electrical engineer so I think a lot of us would like to know how we can interpret the GIDS in our own cars?

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