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I'm not crazy, the attack has begun.
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GID is unknown what it means. As far as we [non-Nissan people] are to know, it is just some number that floats around the car's ethernet that seem to correlate with battery. The 'G' is for 'Gary' who spotted the numbers floating around on the car's CAN.

If you intercept numbers the manufacturer never intended you to see, then don't expect anyone to tell you anything reliable about them.

(If this information is out of date and someone knows more now, then more than happy to be corrected on this)
 

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GID is unknown what it means. As far as we [non-Nissan people] are to know, it is just some number that floats around the car's ethernet that seem to correlate with battery. The 'G' is for 'Gary' who spotted the numbers floating around on the car's CAN.

If you intercept numbers the manufacturer never intended you to see, then don't expect anyone to tell you anything reliable about them.

(If this information is out of date and someone knows more now, then more than happy to be corrected on this)
While technically true, real world experiences tells us each GID represents 80wh of usable energy in the battery. When a 24kwh leaf is new, and charged to "100%" on the dashboard, it will have a real SOC of about 95% (the battery is never truly full or empty, as that would damage it) and read about 280GIDs, that would also be 100% GIDs.

Fast forward two years when you have some battery degradation. When the dashboard says "100%" the SOC of the battery will still be 95% (it is as full as it will get) but the battery itself is now smaller, so it has only charged to 250 GIDs. 250 over 280 is 89%, so your GID % will be 89.

It's therefore a useful fixed unit to use over time in your own car, and compare with other cars too.

It's the metric I use when delivery driving. My car only charges to 82% GID now, and I can just about get 1 mile per GID % in slow urban driving. So long as it's not raining.
 

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A GID is about 80Wh as far as I recall. It's just an internal unit of battery-capacityness that Gary found on the bus.
 

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While technically true, real world experiences tells us each GID represents 80wh of usable energy in the battery. When a 24kwh leaf is new, and charged to "100%" on the dashboard, it will have a real SOC of about 95% (the battery is never truly full or empty, as that would damage it) and read about 280GIDs, that would also be 100% GIDs.

Fast forward two years when you have some battery degradation. When the dashboard says "100%" the SOC of the battery will still be 95% (it is as full as it will get) but the battery itself is now smaller, so it has only charged to 250 GIDs. 250 over 280 is 89%, so your GID % will be 89.

It's therefore a useful fixed unit to use over time in your own car, and compare with other cars too.
Best explanation of GIDs vs SOC I have read yet - I finally understand it!

GIDs is absolute whereas SOC is relative - I get it now.
 

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Best explanation of GIDs vs SOC I have read yet - I finally understand it!

GIDs is absolute whereas SOC is relative - I get it now.
Glad to be of service! :D
 
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Dan
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Discussion Starter · #10 · (Edited)
I've noticed over the past week using leaf SPY, that the soc is being used in the car until around 40% then it slowly makes a transition towards the gids number.

When driving around at 20%. the car is reporting 20% battery left, GIDS 20% on leaf spy and 30% SOC. Which one should I be going off? Should I just ignore the ignore SOC all together?
 

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Specialising in selling EVs since November 2018!
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If you take the number of GIDs you have right now, divide by the SOC percentage and then times by 100 you will get a number for the total number of GIS when the SOC is 100%.

Mine is 277.9 GIDS, Since we know the Leaf leaves the factory with 280 GIDs I can say that this vehicle's battery has degraded by 0.75% (3 years, 14,000 miles)
 
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