Go to advanced search

by jumpjack
Fri Sep 12, 2014 3:04 pm
Forum: Batteries and Battery Management
Topic: New Battery Pack at 2,000 Miles
Replies: 21
Views: 14396

Re: New Battery Pack at 2,000 Miles

Like many others, I never charge to 100% unless I'm going to be driving he car shortly afterward As far as I know, users/owners have no "access" to 0% SoC and 100% SoC in modern electric cars: it's hidden by the onboard firmware, e.g. if battery has 24 kWh, you see just 21 kWh available, ...
by jumpjack
Fri Sep 12, 2014 3:00 pm
Forum: Batteries and Battery Management
Topic: New Battery Pack at 2,000 Miles
Replies: 21
Views: 14396

Re: New Battery Pack at 2,000 Miles

I wouldn't keep my car plugged even for a day. And surely wouldn´t keep it with full charge for a day too. So, keeping it like that for two weeks, specially with hot temperatures, that is surely not good. Keeping the car plugged is not the same as keeping the car unplugged. I don´t know if it charg...
by jumpjack
Fri Sep 12, 2014 2:53 pm
Forum: Batteries and Battery Management
Topic: Cost to replace an i-miev battery?
Replies: 49
Views: 40224

Re: Cost to replace an i-miev battery?

Only weird recommendatin I remember I've read in the manual is to avoid full discharging of secondary 12V battery, as this would prevent from starting the car.
by jumpjack
Mon Sep 08, 2014 2:10 pm
Forum: Batteries and Battery Management
Topic: Cost to replace an i-miev battery?
Replies: 49
Views: 40224

Re: Cost to replace an i-miev battery?

I subscribe the thread... and I wait some years... :roll:
by jumpjack
Fri Jul 04, 2014 2:39 pm
Forum: Driving the iMiev - Range - Energy Efficiency - Operating Cost
Topic: i'er iChart: The iMiev Range Chart. ANY VOLUNTEERS?
Replies: 56
Views: 33514

Re: i'er iChart: The iMiev Range Chart. ANY VOLUNTEERS?

And these are the sad charts taking into account coulombic efficiency...

Image

edit:
damn imperial units... X axis was wrong too. Now it should be ok in all images.
by jumpjack
Fri Jul 04, 2014 2:37 pm
Forum: Driving the iMiev - Range - Energy Efficiency - Operating Cost
Topic: i'er iChart: The iMiev Range Chart. ANY VOLUNTEERS?
Replies: 56
Views: 33514

Re: i'er iChart: The iMiev Range Chart. ANY VOLUNTEERS?

DaveMiller wrote:Thank you for the mph version, but I think the velocity scale is incorrect. My I-Miev will not go 200 mph.
Dave

Yes, I put a * rather than a /...
by jumpjack
Fri Jul 04, 2014 1:49 pm
Forum: Driving the iMiev - Range - Energy Efficiency - Operating Cost
Topic: i'er iChart: The iMiev Range Chart. ANY VOLUNTEERS?
Replies: 56
Views: 33514

Re: i'er iChart: The iMiev Range Chart. ANY VOLUNTEERS?

I didn't read the source data behind the graphs - Do you know if the Peukert Effect was taken into consideration? Don Peukert effect is negligible in lithium batteries: discharge them at C20 or C2, and you'll get same capacity. Lead: http://jumpjack.files.wordpress.com/2012/12/peukert-hires.jpg Lit...
by jumpjack
Fri Jul 04, 2014 11:04 am
Forum: Driving the iMiev - Range - Energy Efficiency - Operating Cost
Topic: i'er iChart: The iMiev Range Chart. ANY VOLUNTEERS?
Replies: 56
Views: 33514

Re: i'er iChart: The iMiev Range Chart. ANY VOLUNTEERS?

Jumpjack, those charts are excellent! This is exactly what I wanted to see for a long time - they show what are the most efficient speeds (giving the longest range) depending on various conditions and loads. It looks like with all accessories off, about 20km/h (13mph) is the most efficient, with A/...
by jumpjack
Thu Jul 03, 2014 1:54 am
Forum: Driving the iMiev - Range - Energy Efficiency - Operating Cost
Topic: i'er iChart: The iMiev Range Chart. ANY VOLUNTEERS?
Replies: 56
Views: 33514

Re: i'er iChart: The iMiev Range Chart. ANY VOLUNTEERS?

Thanks to this additional paper http://www.empa.ch/plugin/template/empa/*/135716/---/l=1 I was able to draw a much more interesting chart: http://autoguida.files.wordpress.com/2014/06/imiev-consumi-brs.png These are ranges in World Lightduty Test Cycle, both at standard temperature (23°C), winter te...
by jumpjack
Mon Jun 30, 2014 1:45 am
Forum: Driving the iMiev - Range - Energy Efficiency - Operating Cost
Topic: i'er iChart: The iMiev Range Chart. ANY VOLUNTEERS?
Replies: 56
Views: 33514

Re: i'er iChart: The iMiev Range Chart. ANY VOLUNTEERS?

From this thread: http://myimiev.com/forum/viewtopic.php?f=22&t=264&start=50 Frontal Area: 24.052 sq.ft (2.2345 sq.mt) Cd: 0.35 (0.33 European, post Sat Apr 13, 2013 9:33 pm ) CdA= 8.4182 (7.9372 European) (0.782 sq.mt, 0.737 sq.mt) mass = 1080 kg https://autoguida.files.wordpress.com/2014/0...

Go to advanced search