PV1
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Re: EVBatMon Readings

Thu Apr 14, 2016 12:10 pm

Thanks for clarifying the terminology. I'll update my posts.
"Bear" - 2012 Diamond White Pearl ES with QC - 2/21/2013
Solar-powered since 10/10/2013

"Koorz" - 2012 Cool Silver Metallic ES with QC - 1/5/2015

2017 Bolt EV LT in Orange with QC - 7/31/2017

Driving electric since 2-21-2013.

PV1
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Posts: 2917
Joined: Fri Apr 27, 2012 4:22 pm
Location: Pittsburgh, PA
Contact: Website

Re: EVBatMon Readings

Sat May 21, 2016 7:30 pm

Bear's capacity is seeming to drop quickly and is now at 42.8 Ah, making for a .4 Ah drop since the beginning of April (when I downloaded EVBatMon). Bear was quick charged once in this time (from 25% to 96%) and the battery temperature has been kept below 85 F.

I am still within the first year of my new battery, and I've heard there is a rapid capacity drop in the first year and then it stabilizes. Perhaps that is what I'm seeing, and I certainly hope that the capacity drop slows.
"Bear" - 2012 Diamond White Pearl ES with QC - 2/21/2013
Solar-powered since 10/10/2013

"Koorz" - 2012 Cool Silver Metallic ES with QC - 1/5/2015

2017 Bolt EV LT in Orange with QC - 7/31/2017

Driving electric since 2-21-2013.

Malm
Posts: 449
Joined: Mon Jul 22, 2013 12:16 pm
Location: Tábua - Portugal

Re: EVBatMon Readings

Sun May 22, 2016 12:50 pm

PV1 wrote:Bear's capacity is seeming to drop quickly and is now at 42.8 Ah, making for a .4 Ah drop since the beginning of April (when I downloaded EVBatMon). Bear was quick charged once in this time (from 25% to 96%) and the battery temperature has been kept below 85 F.

I am still within the first year of my new battery, and I've heard there is a rapid capacity drop in the first year and then it stabilizes. Perhaps that is what I'm seeing, and I certainly hope that the capacity drop slows.


Mine also lost 0.4 Ah since from 33.8 since March. Now with 33,4 Ah. Maybe it makes an upward correction in the future and the number became softer. It happens sometimes in the Outlander.
Riding an i-Miev since 4/2011 in Portugal, 100.000 kms.

JoeS
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Location: Los Altos Hills, California

Re: EVBatMon Readings

Sun May 22, 2016 8:17 pm

Another data point: currently visiting a family friend in New Orleans who bought a 2016 i-MiEV a year ago. Brought my Android tablet and LX with me.

He has put on 5000 miles (8000km) and his battery pack capacity shows 42.1kWh.
Edit: Oops, sorry, that's 42.1Ah :oops:

Also, interesting to note that the brand-new pack put into Gyver's car shows 45.8kWh!
Edit: Oops, sorry, that's 45.8Ah :oops:
Ref: http://myimiev.com/forum/viewtopic.php?p=27731#p27731
Perhaps we should re-think the starting point for our capacity calculations?
EVs: 2 Wht/Blu SE Prem., '13 Tesla MS85, 3 156v CorbinSparrows (2 Li-ion), 24v EcoScoot(LiFePO4)
EV Conv: 156v '86 Ram PU, 144v '65 Saab 96
Hybrids: 48v1kW bike
ICE: '88 Isuzu Trooper. Mothballed: '67 Saab (orig.owner), '76 MBZ L206D RHD RV

wmcbrine
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Location: Laurel, MD
Contact: Website

Re: EVBatMon Readings

Sun May 22, 2016 11:51 pm

JoeS wrote:He has put on 5000 miles (8000km) and his battery pack capacity shows 42.1kWh.

Also, interesting to note that the brand-new pack put into Gyver's car shows 45.8kWh!

Amp-hours (Ah), not kWh.

JoeS
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Location: Los Altos Hills, California

Re: EVBatMon Readings

Mon May 23, 2016 5:02 am

wmcbrine wrote:
JoeS wrote:He has put on 5000 miles (8000km) and his battery pack capacity shows 42.1kWh.
Also, interesting to note that the brand-new pack put into Gyver's car shows 45.8kWh!
Amp-hours (Ah), not kWh.
Thanks for catching that. Boy, am I embarrassed! :oops: Added edit to my original posting.
EVs: 2 Wht/Blu SE Prem., '13 Tesla MS85, 3 156v CorbinSparrows (2 Li-ion), 24v EcoScoot(LiFePO4)
EV Conv: 156v '86 Ram PU, 144v '65 Saab 96
Hybrids: 48v1kW bike
ICE: '88 Isuzu Trooper. Mothballed: '67 Saab (orig.owner), '76 MBZ L206D RHD RV

PV1
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Re: EVBatMon Readings

Wed May 25, 2016 10:22 am

Interesting note. After discharging to 3 bars and recharging, Bear is now showing 43.7 Ah, higher than my 43.2 Ah starting point a couple of months ago.
"Bear" - 2012 Diamond White Pearl ES with QC - 2/21/2013
Solar-powered since 10/10/2013

"Koorz" - 2012 Cool Silver Metallic ES with QC - 1/5/2015

2017 Bolt EV LT in Orange with QC - 7/31/2017

Driving electric since 2-21-2013.

PV1
Site Moderator
Posts: 2917
Joined: Fri Apr 27, 2012 4:22 pm
Location: Pittsburgh, PA
Contact: Website

Re: EVBatMon Readings

Wed Jun 22, 2016 10:59 am

Did another 2 bars to full charge, and now have 44.4 Ah :mrgreen: .
"Bear" - 2012 Diamond White Pearl ES with QC - 2/21/2013
Solar-powered since 10/10/2013

"Koorz" - 2012 Cool Silver Metallic ES with QC - 1/5/2015

2017 Bolt EV LT in Orange with QC - 7/31/2017

Driving electric since 2-21-2013.

phb10186
Posts: 290
Joined: Fri May 13, 2016 12:58 am
Location: North London suburbs, UK

Re: EVBatMon Readings

Wed Jun 22, 2016 2:43 pm

I think battery capacity stats start to become like blood pressure - best not to look at it too often!

Be good to just keep a plot every 3 months against mileage - see the two curves develop. Implement some controls and get a few IMIEVers doing it.
2012 I-MIEV Keiko Silver 16K
2010 Insight ES-T 43K
2001 Accord Type-V (F23 manual)
2009 Hornet CB600F
2008 SH300

zzcoopej
Posts: 62
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Location: Gosford, Australia
Contact: Website

Re: EVBatMon Readings

Wed Jun 22, 2016 2:57 pm

phb10186 wrote:Be good to just keep a plot every 3 months against mileage - see the two curves develop. Implement some controls and get a few IMIEVers doing it.


Actually this is already a free option for all EvBatMon App users! In EvBatMon you can elect to upload your battery data automatically from the App to our cloud service to compare your EV to other iMiEV owners.
More info here http://www.evpositive.com/battery-history.html
The sample graph on the above page is from a PHEV, however users get 2 iMiEV graphs - one is battery capacity vs time, and the other is battery capacity vs distance.

EvBatMon App for iMiEV/C-Zéro/iOn
Android https://play.google.com/store/apps/details?id=com.EvPositive.EvBatMon_iMiEV
iOS (iPhone,iPad,iPod) https://itunes.apple.com/us/app/evbatmon-for-mitsubishi-imiev/id1143905475
www.EvPositive.com

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