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Post by riddick on Aug 8, 2014 16:22:45 GMT 11
Phoebe, you had me worried, but sounds like it is just your GOM..
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Post by southernvolt on Aug 8, 2014 21:15:41 GMT 11
ECO made a big difference to me today. I drove basically the same trip but without the lunchtime bit and returned home with 44 kms on the GOM instead of 20. We then went out again and started with 44 kms but we have a big hill on the way out (down) and so by the time we'd driven the 5 kms to the shop the GOM showed 55.
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Post by southernvolt on Aug 11, 2014 0:39:41 GMT 11
Today I went to low battery warning (when it hot one bar remaining) driving on ECO with climate control on. This occurred around 87 kms. It had 9 kms left according to the GOM when I got home at about 91 kms. So I could have made 100. Feels like less than I expected. I know the whole 160-170 km range is bollocks but I did realistically think I'd get 120 kms. I'm going in for the 1000 kms service either this week or the next, will I get a battery report or something? Or is it just my driving?
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Post by Feng on Aug 11, 2014 1:40:04 GMT 11
Have you checked your tire pressure? That might help. Nissan recommends 36PSI but you should be able to use 40 without problems and I did get a slight improvement when I did that. Was your climate control set high? That would use more range than a lower setting especially when heating instead of cooling.
There's about a 10km reserve by the time the GOM displays "---".
The battery report just tells you how well you're looking after your battery, not how much actual capacity it has left. You're better off getting an OBDII dongle and running LEAF Spy or find another owner who can do it for you to look up all the gory details.
When we had our meet a few weeks ago, an owner with less than 10,000kms on their LEAF was already down to 87% capacity. Either their LEAF was neglected while it was in storage or their pack wasn't balanced (I forgot to check). I won't mention names in case they want to keep that private. Hopefully you're not on the same boat!
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Post by Phoebe on Aug 11, 2014 5:57:22 GMT 11
Today I went to low battery warning (when it hot one bar remaining) driving on ECO with climate control on. This occurred around 87 kms. It had 9 kms left according to the GOM when I got home at about 91 kms. So I could have made 100. Feels like less than I expected. I know the whole 160-170 km range is bollocks but I did realistically think I'd get 120 kms. I'm going in for the 1000 kms service either this week or the next, will I get a battery report or something? Or is it just my driving? Climate control makes a huge difference. Speed you travel at makes a huge difference. Hills make a huge difference. When I took delivery of my LEAF I had to get it from Artarmon in Sydney to my home in Telarah in Maitland, 157kms. I made it driving on ECO with 17km left on the GOM, so the 160-170km isn't total bollocks, but it is very difficult. I couldn't make it all the way back to Artarmon for a service, I only made it to Jim's, which was 140kms. Whether it was the hills being different in the different direction or the the wind being different or what, I'll never know. But I do know it varies tremendously and it doesn't mean there is anything wrong with your battery.
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Post by Jim Hare on Aug 11, 2014 7:27:55 GMT 11
I agree, 160 is quite achievable but should be considered best case scenario. Add hills, climate control, wind resistance, tyre pressure, passengers (I'm seeing more and more that passengers are a big factor) and the rest and in comes the variance.
Really the only way to be sure of any measurement is with the trip odometer using 100% charge. If you're keeping records be sure to have columns for all the things mentioned above, then you'll have a true picture.
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Post by riddick on Aug 11, 2014 12:46:14 GMT 11
I had a strange recharge on Saturday morning. I have plugged in with about 92kms (no climate control figure) left on the Friday after little use but with the heater on. Then it messaged me 5 mins after recharge should have started that it is done and here is what I had: This is a new low for an 80% recharge! Today it is back to 127kms.
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Post by Deleted on Aug 12, 2014 8:39:46 GMT 11
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Post by riddick on Aug 12, 2014 11:56:21 GMT 11
Nice web site, thanks.
Funny thing is that I was only driving around the suburb and did not even go far prior.
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Post by hieronymous on Aug 13, 2014 12:33:00 GMT 11
Today I went to low battery warning (when it hot one bar remaining) driving on ECO with climate control on. This occurred around 87 kms. It had 9 kms left according to the GOM when I got home at about 91 kms. So I could have made 100. Feels like less than I expected. I know the whole 160-170 km range is bollocks but I did realistically think I'd get 120 kms. I'm going in for the 1000 kms service either this week or the next, will I get a battery report or something? Or is it just my driving? Climate control makes a huge difference. Speed you travel at makes a huge difference. Hills make a huge difference. When I took delivery of my LEAF I had to get it from Artarmon in Sydney to my home in Telarah in Maitland, 157kms. I made it driving on ECO with 17km left on the GOM, so the 160-170km isn't total bollocks, but it is very difficult. I couldn't make it all the way back to Artarmon for a service, I only made it to Jim's, which was 140kms. Whether it was the hills being different in the different direction or the the wind being different or what, I'll never know. But I do know it varies tremendously and it doesn't mean there is anything wrong with your battery. As a city driver I find traffic light stop/start, slow down/speed up conditions just as challenging. I am averaging 7.2 km/kWh around the suburbs, but my highway cruising at 85kph indicated is giving me 7.1 km/kWh (155km Full Charge Range Equivalent (FCRE)). A couple of days ago with a passenger I did a 38km round trip, 10km highway, 28km suburbs. I had the climate air on the whole way for heating, and was in Drive mode. My energy usage dropped to 5.2km/kWh (113km FCRE), the climate air the culprit, no doubt. Yesterday I did weekly shopping, a 10.6km round trip, 3 stops, mostly flat plus a small hill to traverse both ways, in Eco mode, no climate air. I find when I watch the Power Meter that if I accelerate moderately, then lift my foot of the accelerator, then gently re-apply it, that the Power meter will (at town speeds) drop back from 2 circles to one - I then try to cruise as far as possible on one circle. This is my Leaf version of a Prius technique called pulse and glide. My Leaf Spy app told me that doing this I only used 0.9kWh for the 10.6km, a rate of 11.8km/kWh (257km FCRE)!! I'd love to do this for a full charge! As Phoebe says, it varies tremendously... Murray
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Post by riddick on Aug 25, 2014 21:26:45 GMT 11
I think I figured what is wrong. Last night our Leaf did not charge again. We left it at about 90kms and in the morning it was the same. Overnight I got an e-mail every hour that our Leaf was fully charged. I have never received multiple e-mails before.
Clearly something went wrong. On the OpenEVSE screen I only saw a single character on the screen a "C". That has not happened before either.
So in my earlier post, I think I had a similar issue, it was not a GOM problem, but the fact that the car just did not charge up at all. On that occasion, however, the EVSE screen was ok and I did not receive multiple e-mails either.
I think I need to watch the recharge a bit more carefully now... I have reset the EVSE box, just in case.
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Post by gabzimiev on Aug 25, 2014 23:21:35 GMT 11
I think I need to watch the recharge a bit more carefully now... I have reset the EVSE box, just in case. I would be reverting back to the Nissan supplied EVSE one just in case.... sounds like an interesting problem through. so the question is what does your open EVSE do when you get to fully charged ? and what does the car do ? Feng has indicated that the LEAF top balances the battery pack. it seems that the car wants to stay connected after reaching 100% full in order to do that so it would want the EVSE to keep the relay in until the car connection signal goes away. does the open EVSE follow this one or does it close the relay as soon as it detects the car is full ? how does the open EVSE detect the car is full ? (since I assume it sent you the email not the LEAF). or the openEVSE is buggy and removing power prematurely screwing up the LEAF.
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Post by Deleted on Aug 26, 2014 1:25:57 GMT 11
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Post by Deleted on Sept 10, 2014 15:39:54 GMT 11
How many kW is used at a constant 80kmh on level road?
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Post by Brian on Sept 10, 2014 21:45:11 GMT 11
One factor that I have not seen mentioned is power steering.
This is of no consequence with an I.C.E..
My mechanical and electrical knowledge is strictly limited.
It is generally recognised that the LEAF's steering is ' light '. To achieve this obviously requires energy from the batteries - the lighter the steering, the greater the energy required. But we do not know how much is consumed. Logically it would be greater in the twists and turns of suburban driving than it would be on relatively straight highway driving.
Anyone who has driven a vehicle without power steering would have some appreciation of the energy required, and would probably have consciously reduced their steering inputs accordingly.
Because the LEAF's steering is so light, it could be only too easy to use it more than is essential. And yes, I am probably guilty of this.
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Post by Phoebe on Sept 10, 2014 22:16:42 GMT 11
Anyone who has driven a vehicle without power steering would have some appreciation of the energy required, and would probably have consciously reduced their steering inputs accordingly. Because the LEAF's steering is so light, it could be only too easy to use it more than is essential. And yes, I am probably guilty of this. My last car didn't have power steering, so I really appreciate it, but hadn't really thought about how it worked. Will try to remember to turn as little as possible in future.
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Post by markrmarkr on Sept 11, 2014 7:22:54 GMT 11
How many kW is used at a constant 80kmh on level road? According to the Nissan Leaf range chart (Metric) 81km/h requires 10.87kW.
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Post by riddick on Sept 11, 2014 10:05:31 GMT 11
Brian, I tried to drive straight this morning, but my neighbours did not appreciate me driving over their block. Bloody ICE drivers, don't understand anything about power saving strategies Seriously, my local morning return trip is costing me 10kms on the GOM, when it is only 5.1kms on the trip meter, which we all know is 10% wrong, so it is really only about 4.6kms. Almost all 50km zones, a bit of 40 and 2 short bursts of 80km zones where I only get to 65-70 before slowing again for a turn. Only slight hills. From what I experienced, after start up the GOM is consuming a lot only to slow down as you keep driving. Anyone else seen this?
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Post by caskings on Sept 11, 2014 15:30:54 GMT 11
I've seen it from the intial temp / embedded heat draw down by the A/C on start up.
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Post by Brian on Sept 13, 2014 0:57:04 GMT 11
The a/c heater is the real killer. Come out West, then you will never need the heater.
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Post by Jim Hare on Sept 13, 2014 9:26:55 GMT 11
In Sydney I don't think we've used the heater more than 5 times in 2 years. A/C for cooling yes but not nearly as bad as heating.
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Post by markrmarkr on Sept 13, 2014 12:57:33 GMT 11
I noticed this too. And it seemed to be getting worse. I was worried that my battery was degrading or something. Then I realised I was using the heater more because it was winter. So I started turning the heater on from my phone, whilst plugged in. And turning it off when I started driving. Problem solved.
I did notice though, that the car was charging on top of the 80%, while the heater was on.
Sent from my SM-N9005 using proboards
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Post by Jim Hare on Sept 13, 2014 19:31:29 GMT 11
That kind of makes sense. Guessing the car can't just pass the power to the heater, it just turns the charger back on to counter the drain.
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Post by riddick on Sept 16, 2014 21:41:24 GMT 11
The interesting thing is that I had climate control off, as I am very aware of what a power monster the heater is. So why is it so hungry?!
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Post by Deleted on Sept 16, 2014 21:48:13 GMT 11
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Post by riddick on Oct 7, 2014 14:22:57 GMT 11
In relation to my post on Aug 25th, I have been using my OpenEVSE ever since and no problems whatsoever. I am thinking that it may have been the high voltages playing havoc at my house. I regularly get over 260V here. This is after I complained to the power company and they lowered it as I used to get over 270V and my solar would cut out.
Perhaps the LEAF is not happy with high voltages...
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Post by stewartm on Dec 9, 2014 9:01:15 GMT 11
Interesting point Riddick, I have a similar issue on the Sunshine Coast around 260 volts at times. I have realised that the Nissan Leaf here in france seems to charge way faster on L2 than in oz. Vols here are about 226, under the french 230 nominal. Here I may be down to one bar and put it on charge and it says around 6 hours to charge to 100%. In four hours it has turned off and it's full. So maybe there is an issue with the voltage. Just thought I would mention it. Btw clipper creek chargers in each country.
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