Pier
Posts: 51
Joined: Tue Nov 15, 2011 9:01 am
Location: St-Aubert, Qc,

New I-MIEV owner from the cold

Tue Nov 27, 2012 11:59 am

My 3 days old I-Miev had a hard time this morning. T -9°C. I went on a 36.2 km run mainly uphill to go. start at 13 bars and only 3.3 bars on arrival. Then way back mostly down 36.2km with turtle with still 17 km to go. I was sure I couldn't make it . I had to drive at 60 kmh and finally arrived safe at home.

I was a bit nervous for the first time on my experiments. Moreover I forgot my evse home so I couldn't recharge on people en route.

Not a lot of energy in the cold and uphill. Just the beginning of the cold season wich will see T° below 20C.

Pier

Don
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Re: New I-MIEV owner from the cold

Tue Nov 27, 2012 1:42 pm

How do you measure 3.3 bars?

Sounds like you learned a couple of things. When you leave home for a cold, uphill drive, make sure the battery is fully topped off . . . . and take along youe EVSE just in case!

Don
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Pier
Posts: 51
Joined: Tue Nov 15, 2011 9:01 am
Location: St-Aubert, Qc,

Re: New I-MIEV owner from the cold

Tue Nov 27, 2012 2:43 pm

3.3 bars !!! :?: easy .... no kidding .... just the time or km before losing a bar. It was at 4 bar when I stopped mid-way and lost one bar not long after restart.

Learned a couple of things this morning but also learned a lot reading your posts...thanks...

Pier from Québec.

oakvilleblake
Posts: 45
Joined: Tue Jul 03, 2012 7:36 pm

Re: New I-MIEV owner from the cold

Tue Nov 27, 2012 9:36 pm

Are you using the heater at all? That's a real drain on the battery. Preheat the car while plugged and and use only the seat heater once underway. And stick to secondary roads (or to 90-95kph on freeways)... You should find a big improvement. We can still routinely get >100km out of a single charge at current temperatures (-1C to +6C) by doing this.

MLucas
Posts: 833
Joined: Thu Jun 07, 2012 8:52 am
Location: Niagara on the Lake, Ontario, Canada

Re: New I-MIEV owner from the cold

Wed Nov 28, 2012 8:04 am

oakvilleblake wrote:Are you using the heater at all? That's a real drain on the battery. Preheat the car while plugged and and use only the seat heater once underway. And stick to secondary roads (or to 90-95kph on freeways)... You should find a big improvement. We can still routinely get >100km out of a single charge at current temperatures (-1C to +6C) by doing this.


+1

That is what I'm doing as well. It's a speed limit, not a minimum - going 90-95 kmh on the freeway is totally legal. I think I only tried once to go 130 kmh just to see what is was like but mostly I drive it under 100 kmh. Its not that the car can't do it, I'm finding I like the slow going. No need to rush around here and there to get any joy out of the car like I did when I drove ICEs. The electric is a pleasure to drive at any speed. Now when I ride in an ICE or drive my spouses car, I find them to be so harsh and crude compared to the electric smootheness.

I do use the heater though, but keep it on the first or second notches. At 2 to 3C I'm finding I'm only using an extra bar on my 43km commute. I did perform the heater insulation upgrade and the door panel insulation upgrade this fall, I'm thinking this is starting to pay off as I'm not using as much heat to greatly affect my range.

Like Dylan...I went electric.

  • Purchased: June 29th, 2012
  • Mileage on June 29th, 2013 - 25,431 km / 15,802 miles
  • Mileage on June 29th, 2014 - 51,286 km / 32,616 miles

List of Oil Spills: http://en.wikipedia.org/wiki/List_of_oil_spills

sandange
Posts: 907
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Location: Quebec, Canada
Contact: Website

Re: New I-MIEV owner from the cold

Wed Nov 28, 2012 9:14 am

Salut Pier

I`m near St Sauveur, QC and experimenting as what is best for our clod temperatures too.

The advice here from the others, is very helpful.
In the winter best keep the battery charged full before you go out on a trip
If you have a heated garage - use it when it gets (-10c or colder)

Here are some of my experiences..

Always preheat the car while you're plugged in before you leave

down to -10C or warmer
In these temperatures - For trips less than 50km (30 miles)
I leave with a full charge and can use the main heater on low 2-4 notches into the red with medium fan speed and use the seat heater, with out any problems.
I Drive with a light foot

For longer trips Less than 70km (45miles)
Best use the seat heater - turn it off when you`re warmed up and on later when your cold, to save energy.
The main heater is a big power drain - try not to use it if you have far to go.
Always carry your portable charger with you and invest in a 12 gauge wire 50`extension cord`.
(I had my portable charger upgraded to a 120/240v 12 amp for faster charging.)

Going up hills will eat a lot of energy, - I live in the mountains.
Fast hard acceleration will use a lot of energy .

My Miev works best for energy consumption and practicality between 60-70 km ph (35- 45 mph) on flat roads.

I'm also considering getting an electric 12V heating cushion (for the passenger seat) & 12v heated car blanket to keep my knees and legs warm.
Last edited by sandange on Thu Nov 29, 2012 8:54 am, edited 1 time in total.
Tesla Model 3 SR+, 2019
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Pier
Posts: 51
Joined: Tue Nov 15, 2011 9:01 am
Location: St-Aubert, Qc,

Re: New I-MIEV owner from the cold

Wed Nov 28, 2012 2:14 pm

On my 72.4 km, I used no heat at all, just preheating before leaving. The seat heater is fine to heat what is on the seat (hic) but not of much help for my cold feet. So I had cold feet on the return leg. Longer trip would need some more heating in minus 8°C temp., even more when It will go down to minus 20 -25°C in january.

It seems to me that in addition to the cold weather effect on battery, bearings of the car, and air having more density, the fact that the car is not broken in might give less autonomy ? What do you think ? Did you see gradual improvement in the first few thousands km ?

One final note. When recharging after turtle, it took 20+ hours. What surprised me was the cruising range indicator (Gom meter) indicating 151 km to go, never that high before. It tells me that the past drive data it uses is short, I mean not taking into account the whole 72.4km but mainly the return leg that was done at low speed more down than up. The worst GOM I have seen was at the dealership. Full charge gave projected autonomy of 62 km. It sure had been driven very hard before by the company who had it on trial for his employees for 2 days.

Last friday going out of the dealership (first ride) with 15 bars out of 16, I was home (93km) just before turtle. T° +4°C, no heating, no headlight except last 25 km, and nice tail wind. I was driving conservative but following speed limits on secondary roads ( 90kmh, 50 kmh in town). It seemed to me a little short autonomy, considering the tail wind.



Note: It is a little difficult for me to translate fast all these °C to °F and km into Miles, but if you prefer I will do my best.

Pier
Posts: 51
Joined: Tue Nov 15, 2011 9:01 am
Location: St-Aubert, Qc,

Re: New I-MIEV owner from the cold

Wed Nov 28, 2012 5:20 pm

mlucas....to me 90 kmh is no problem around here and I sometimes go down to 80 except on city hyway.

Sandage... St-Sauveur must be about the same weather as here. I will follow your experiments to improve comfort in cold weather with pleasure and bring my own experiences in the right thread. For now, the only thing I did was to preheat with a 120 volt ceramic heater instead of pre-heating with the main battery ( because I recharge on 120 volt which doesn't supply enough energy to pre-heat and recharge at the same time.). I am also thinking of a small 12v heater pushing hot air to the feet while using the seat heater
Last edited by Pier on Thu Nov 29, 2012 11:29 am, edited 1 time in total.

iMiEVNZ7
Posts: 122
Joined: Mon Feb 13, 2012 7:45 pm

Re: New I-MIEV owner from the cold

Wed Nov 28, 2012 6:56 pm

Hi Guys,
one we are going to try for Winter here in NZ, around July, is having our spare battery pack, which is rated at 8Kw and is LiPOIron as opposed to ion, so a bit cheaper I think, is too use the spare pack and run a 12 volt inverter to 230 volts, and then use a normal house fan heater on low, these don't get too hot to touch and have overheat cutouts on them.

Plus they have thermostats so we can simple turn them on to the desired temperture. The car should be all toasty and warm and even on 1, 500 watts, the 8 Kw pack would run to about 4 hours or so.

Maybe it might be an idea to make up a smaller pack, say even a 1 Kw pack and have enough heat at 1.5 Kw for 45 minutes, which might be ok for the shorter trips.

The main purpose of our 8 Kw pack though is to add extra range if we get stuck somewhere without a powerpoint, we should get another 50 Km or more out of the pack at 100 Km/ Hr or maybe another 75 Km at 70 KM Hour.

The pack here costs around $ 9, 000 NZ $

psyflyjohn
Posts: 81
Joined: Sat Jun 16, 2012 12:47 pm
Location: San Diego, CA

Re: New I-MIEV owner from the cold

Thu Nov 29, 2012 9:23 am

And one wonders why electrics aren't catching on ?

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