Cold weather is here! 102 miles = 100%+76% charge!

Discussion of long distance EV trips originating, finishing in or passing through Scotland
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Stiloboy
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Re: Cold weather is here! 102 miles = 100%+76% charge!

Postby Stiloboy » Thu Nov 24, 2016 5:15 pm

Bummer, thats a bit low that expected. :(
Renault Zoe Q210 Dynamique Intens owner since March 2015.

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Scally
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Joined: Wed Jun 11, 2014 3:50 pm

Re: Cold weather is here! 102 miles = 100%+76% charge!

Postby Scally » Thu Nov 24, 2016 10:13 pm

Recharged at home to 100%, then this evening drove into Glasgow to see Radio Scotland's Breaking the News, live at the Students Union of the Glasgow School of Art.

35 miles round trip, used 47% of the battery. That's not too good. I'm not a mathematician, but I would guess my real - normal use - winter range in sub-zero temperatures is about 75 miles, say 2.5 kwh per mile. Only plus side was that I got from three temperature bars to four.

By the way, catch the show on Radio Scotland tomorrow (repeat Saturday) there's a very weak EV gag in there somewhere.... assuming they don't cut it out: the broadcast show reduces 90 minutes live recording down to 30 minutes of broadcast.

ScotstounPele
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Re: Cold weather is here! 102 miles = 100%+76% charge!

Postby ScotstounPele » Mon Dec 05, 2016 8:13 am

On the other hand - here's a "thank goodness for cold weather" story.

I had the use of a 30kwh Leaf over the weekend for a return trip from Glasgow to Manchester with a heavily loaded car. We stopped and charged 3 times (Abington, Southwaite, Rivington on way down, then Forton, Tebay, Annandale on way back, charging to at least 90% each time) and we drove at 60-75mph the whole way. We even had about 20 mins at Tebay on the way back when the car was neither moving nor charging.

The battery temperature ended both journeys just one or two bars short of the "red zone". This was in chilly temperatures (we frequently saw the "low temperature outside" warning).

A nice, hot battery seems to perform more efficiently than a cool winter battery, so we enjoyed decent distances and speeds between charge stops, but what if we had taken this journey in summer? I assume that we would have had to drive at under 60mph, not to conserve energy but to prevent the battery overheating.

I hope that the next generation of EVs comes with more efficient battery temperature moderation!

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Stiloboy
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Re: Cold weather is here! 102 miles = 100%+76% charge!

Postby Stiloboy » Wed Jan 11, 2017 1:17 pm

Presumably you'd go much further between stops in Summer? When I did Manchester back in 2015 I too stopped at Abington (first at Edinburgh, broken, then a 22kw post for 20mins, Abington broken and then drove sensibly to Annandale water) then only Southwait then Lancaster) in a 22kwh Zoe (65-70mph all the way). It was a day of entertaining range anxiety haha.
Renault Zoe Q210 Dynamique Intens owner since March 2015.

ScotstounPele
Posts: 144
Joined: Sun Sep 20, 2015 9:48 pm

Re: Cold weather is here! 102 miles = 100%+76% charge!

Postby ScotstounPele » Wed Jan 11, 2017 2:05 pm

We had kids in the car and they required periodic toilet/magazine stops so we stopped 3 times. Otherwise we could have done the trip with just two stops.


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