Stoaty
Posts: 4490
Joined: Fri Jun 18, 2010 9:50 pm
Delivery Date: 12 Jun 2011
Leaf Number: 3871
Location: West Los Angeles

Re: I want my 281!

Fri Sep 09, 2011 2:32 pm

garygid wrote:Stoaty,
Are you coming to the Gathering at HTB in Cerritos tomorrow morning?

At the moment I have 2 SOC-Meter Kits available, which I will bring to the Gathering.

Do you want Red or Blue LED digits?
The Logging Port Option?
Can't make it tomorrow, already have hiking plans. Which color looks better? Which is easier to see?
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

GregH
Posts: 860
Joined: Fri Jul 01, 2011 4:16 pm
Delivery Date: 13 Jun 2011
Leaf Number: 26967
Location: Irvine, CA

Re: I want my 281!

Fri Sep 09, 2011 3:07 pm

224# at 80% and 271# at 100% this am..
'17 blue Volt Premier w/ACC
'12 SL black Leaf
'11 SL blue Leaf
RAV4-EV 2002-2005
Gen1 & Gen2 EV1 1997-2003
PV 2.4Kw, 10kWh lithium battery SCE TOU-DA

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garygid
Gold Member
Posts: 12469
Joined: Wed Apr 21, 2010 8:10 am
Delivery Date: 29 Mar 2011
Leaf Number: 000855
Location: Laguna Hills, Orange Co, CA

Re: I want my 281!

Fri Sep 09, 2011 3:35 pm

Looks like we need to find the Battery Temperature(s) in the CAN-Data!
See SOC/GID-Meter and CAN-Do Info
2010 Prius
2011 LEAF, 2014 Tesla S85
2018 & 2019 Tesla Model 3
PU: SDG&E
Solar PV: 33 x 225W -> 7 kW max AC
Craigslist: Xm5000Li Electric Motorcycle

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surfingslovak
Vendor
Posts: 3809
Joined: Mon Jun 13, 2011 1:35 pm

Re: I want my 281!

Fri Sep 09, 2011 4:13 pm

garygid wrote:Looks like we need to find the Battery Temperature(s) in the CAN-Data!
Yes! I was hoping that it was either already possible or was considered a worthwhile enhancement :-)
The battery temperature gauge is very coarse, and if the fine folks from the Chevy Volt universe can be believed, the delta between 70°F (21°C) and 90°F (32°C) can be critical to battery life.

Stoaty
Posts: 4490
Joined: Fri Jun 18, 2010 9:50 pm
Delivery Date: 12 Jun 2011
Leaf Number: 3871
Location: West Los Angeles

Re: I want my 281!

Fri Sep 09, 2011 4:21 pm

surfingslovak wrote:The battery temperature gauge is very coarse, and if the fine folks from the Chevy Volt universe can be believed, the delta between 70°F (21°C) and 90°F (32°C) can be critical to battery life.
Very interesting. Now where was that chart that correlates number of bars on the temperature gauge with actual battery temperature? Edit: found it here: http://www.mynissanleaf.com/viewtopic.p ... 34#p103134" onclick="window.open(this.href);return false; Unfortunately, with the following data:

5 bars - 50.5 degrees F.
6 bars - 75.2
7 bars - 98.2

it doesn't help very much. I run 5 bars (50-75) when at home for a while, and 6 bars when parked in the San Fernando Valley during the day in the summer (75-98). The coarse granularity gives me no useful information about exactly how hot my battery is getting (or how cool at home). This would be high on my list to add to the SOC meter, and the feature that would push me to actually purchase the meter.
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

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surfingslovak
Vendor
Posts: 3809
Joined: Mon Jun 13, 2011 1:35 pm

Re: I want my 281!

Fri Sep 09, 2011 4:43 pm

Stoaty wrote:Now where was that chart that correlates number of bars on the temperature gauge with actual battery temperature?
Yes, you beat me to it! It's on page 21 in section MWI. It would be nice to have more granular data, and I would be very interested in logging it, preferably over the lifetime of the vehicle.

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TonyWilliams
Posts: 10091
Joined: Sat Feb 19, 2011 1:48 am
Location: San Diego
Contact: Website

Re: I want my 281!

Fri Sep 09, 2011 6:55 pm

You could read the actual resistance values directly from the sensors.

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garygid
Gold Member
Posts: 12469
Joined: Wed Apr 21, 2010 8:10 am
Delivery Date: 29 Mar 2011
Leaf Number: 000855
Location: Laguna Hills, Orange Co, CA

Re: I want my 281!

Fri Sep 09, 2011 7:04 pm

Might be difficult to reach the four sensors that are inside the battery pack.

Perhaps it is better to use (if we can find them) the "calibrated" numbers that the LEAF is using internally?
See SOC/GID-Meter and CAN-Do Info
2010 Prius
2011 LEAF, 2014 Tesla S85
2018 & 2019 Tesla Model 3
PU: SDG&E
Solar PV: 33 x 225W -> 7 kW max AC
Craigslist: Xm5000Li Electric Motorcycle

91040
Posts: 1042
Joined: Fri Mar 11, 2011 10:36 pm
Delivery Date: 06 May 2011
Location: Los Angeles, CA

Re: I want my 281!

Sun Sep 11, 2011 2:00 pm

Temperature was more temperate yesterday.

All 80% charges and using my Blink (except as noted).

9/6 77.5%/218 raw -388.5 Battery pack voltage
9/7 77.5%/218 raw -388.5V
9/8 77.2%/217 raw -388.5V
...... 77.5%/218 raw -388.5V (ChargePoint dock)
9/9 78.6%/221 raw -388.5V
9/10 .....95.3%/268 raw ("100%" charge) -393.5V
9/11 80.4%/226 raw -387.5V

It looks like the temperature hypothesis might be correct. What does this tell us about the raw number derivation?
1st Capacity Bar loss 30k mi 16mo
2nd- 49k mi 25.5mo 51.5Ah
3rd- 73k mi 36.5mo 46.9Ah
4th- 86.5k mi 43mo 42.6Ah
5th- 101k mi 50.5mo 38.4Ah, end 36.1Ah
New Battery 9/28/15 104k mi 66.1Ah
1st- 160.5k mi 34mo 54Ah
2nd- 184.4k mi 53mo 49Ah

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evnow
Moderator
Posts: 11480
Joined: Thu Apr 22, 2010 11:41 am
Delivery Date: 25 Feb 2011
Leaf Number: 303
Location: Seattle, WA

Re: I want my 281!

Sun Sep 11, 2011 8:23 pm

I have always got 231 at 80%. My garage is probably around 65 degrees.
1st Leaf : 2/28/2011 to 5/6/2013
2nd Leaf : 5/4/2013 to 3/21/2017
Volt : 3/25/2017 to 5/25/2018
Model 3 : 5/10/2018 to ?

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