Zelenec
Posts: 265
Joined: Sun Feb 17, 2013 12:21 am
Location: sLOVEnia
Contact: Website

Re: Turtle riding (How far has the turtle brought you ?)

Sun Nov 15, 2015 1:16 pm

I do it quite often. I noticed I can rely on the SOC Canion reading. The car stops at 0-2% SOC and every % equals at least 1 km of easy driving. It happened a few times I came to a planed charging station with less than 5% SOC w/o any range anxiety.
Tired of smelly garage - switched to EV in 2012!
Zelenec = Greeny, Treehugger, Ecofan
www.mojev.si

Gyver
Posts: 16
Joined: Wed Dec 30, 2015 4:50 am
Location: Rimini - Italy
Contact: Website

Re: Turtle riding (How far has the turtle brought you ?)

Sat Jan 30, 2016 2:35 am

In Hungary a car magazine has tried a low speed, public roads range test. In this video https://www.youtube.com/watch?v=zqSLNX3WlHY you can clearly see the turtle showing up at 201.9 km and the battery drying out completely at 219.3 or 17.4 km at 30 km/h. They managed to drive 220 km (137 mi) on a public road at 40 km/h (25 mi/h).

______________
2012 white C-Zero
2008 Fiat Multipla "Natural-Power" (Compressed Natural Gas)

Driving CNG since 1-18-2000.
Driving electric since 12-22-2015.

ICEM4N
Posts: 18
Joined: Tue Aug 04, 2015 5:34 am

Re: Turtle riding (How far has the turtle brought you ?)

Tue Feb 02, 2016 5:44 am

Hi.... Made 6km and still 5% soc... So, easy 12km on turtle.
And with normal speed, probably at 40km/h about 15km.

But pay attention, the battery degradation diminish the turtle percentage for a certain period.... Same car can make 10km, then can make 6km and after 20.000km again about 9km when the car recalculate battery status and degradation

nikalex
Posts: 32
Joined: Mon Apr 20, 2015 11:03 am
Location: Vancouver, BC, Canada

Re: Turtle riding (How far has the turtle brought you ?)

Tue Feb 02, 2016 12:34 pm

I've seen the turtle 3 times at least.
I estimate at least 10 to 12 kms range left as well. I say estimate because I haven't run out or gotten stranded (yet).
Yesterday it was a little cold out, below 0°C, and I had about 8kms to go to get home.

I went to zero bars out of the 16 with 5 kms RR.
At about 2 kms RR the turtle appeared.
At this time my heater turned off but the fan kept blowing.
Headlights were on.
And I travelled 8 kms at about 50 to 60 km/hr speed.
Not sure how much was left in the 'tank' after though.
Cheers, Roman
2014 i-MiEV

genec
Posts: 59
Joined: Sun May 03, 2015 2:38 pm

Re: Turtle riding (How far has the turtle brought you ?)

Tue Feb 02, 2016 1:06 pm

If you ever have to maximize your mileage, go about 25 mph. It seems counterintuitive because you are spending more time on the road but in reality you will get the most miles out of the Miev. This could really save you if you get into a turtle situation.

bobakka
Posts: 36
Joined: Mon Nov 03, 2014 8:03 am
Location: Oslo, Norway

Re: Turtle riding (How far has the turtle brought you ?)

Sat Feb 06, 2016 3:58 am

Do not trust the turtle!

When the car was new I once in a while run down to the turtle. One claimed that you could drive 12 km with the turtle as he had done. I had a maximum of 3 km.

Last fall I saw the turtle with still 2 bars left, but this time it was serious. The car run for only 50 m and was then absolutely dead! I think the "guessometer" had been tricked by the 12V being drained during a vacation periode.
iMiev; New Feb 2011; 119000 km January 2017

JoeS
Site Moderator
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Location: Silicon Valley, California

Re: Turtle riding (How far has the turtle brought you ?)

Sat Feb 06, 2016 12:34 pm

bobakka, I think we've pretty-well concluded that Mitsubishi's approach to battery capacity depletion has been simply to reduce the 'range' of turtle. Your supposition that having the 12v battery go down on your car may well have affected the RR calculation, hopefully temporarily.

Our RR, unlike the Leaf's GOM, is very predictable based on how the car was driven over the last 15 miles (24km), and I have yet to have it fail me. Perhaps Mitsubishi had further refined their internal parameters by the time they released the i-MiEV to the North American market?

I think it is out-of-the-ordinary to have turtle kick in while still showing two bars, and then have the car stop almost immediately.
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

tigger19687
Posts: 552
Joined: Tue Feb 10, 2015 1:19 pm
Location: Bedford/Concord MA

Re: Turtle riding (How far has the turtle brought you ?)

Sun Feb 07, 2016 7:32 am

Joe I was thinking that same thing.
I have gone down to 1 blinking bar and no turtle ever
[size=85]- Linda
-2017 Chevy Bolt Premier Bright Blue
- 2014 Toyota Prius C, for the Son

bobakka
Posts: 36
Joined: Mon Nov 03, 2014 8:03 am
Location: Oslo, Norway

Re: Turtle riding (How far has the turtle brought you ?)

Sun Feb 07, 2016 8:13 am

Before the 12V was emptied, I always trusted the bars and had no problem to run down to 1 or 0 bars or maybe even turtle. I never run out of power.

But then I had the situation described above with 2 bars and car stopped. I think it was something similar that Malm has described earlier in another post. I use Canion and I also measure with a kWh-meter how much power the car needs. It is no doubt that the calculation of SoC was wrong - showing much more than it actually was.

I was then at a battery-service in December where they claimed that the battery capacity was 39 Ah before the service and 45 Ah after the service. So appearently the SoC calculations are not stable.

I even saw the turtle now in January with 5 bars left, running 90 km/h and -20 Celsius. I turned off all heat, slowed down and managed to drive the 10 km to my work.

I do not know what is going on with my car now..
iMiev; New Feb 2011; 119000 km January 2017

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

Re: Turtle riding (How far has the turtle brought you ?)

Sun Feb 07, 2016 11:10 am

One day your car will recalibrate its capacity. You will have to wait. Then, each bar will value less energy.

Yes, I described that behavior earlier. With Canion you will be able to follow the cells voltage. It is safer at the moment then relaying on the reported SoC.

Be patient and one day it will fix itself. At least mine did it.
Riding an i-Miev since 4/2011 in Portugal, 100.000 kms.

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