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Post by Jim Hare on Apr 7, 2015 22:58:36 GMT 11
Done two back-to-back range tests and it seems a 100% charge only gets us 100KM these days.
Maybe 110 if we went all the way to turtle mode, but still, quite a drop.
Our hilly location is certainly no help but there it is...
Pretty soon I guess we'll charge to 100% every time just to get some range between charges.
Thoughts?
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Post by Phoebe on Apr 7, 2015 23:08:06 GMT 11
That is a drop, isn't it. How many bars have you lost? Better get it all checked next service. I'm still getting nearly 140km on 100% charge.
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Post by richardh on Apr 7, 2015 23:12:34 GMT 11
Hi Jim, How many bars have you lost in battery capacity? I've lost 2 (only 10 left) and a 100% charge gets me a maximum of about 110 km.
Also, 100% charging, according to posts on My Nissan Leaf, may be fine for battery health as long as you don't leave the car sitting for days at 100%. The 2015 US model Leaf only has the 100% charge level available, the 80% option has gone.
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Post by Feng on Apr 8, 2015 1:05:58 GMT 11
Hi Jim, what were you getting when you first got your car? I've mentioned it elsewhere, it's not your tire pressure is it? Are you testing with additional passengers on board?
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Post by tjgeel on Apr 8, 2015 1:19:39 GMT 11
Done two back-to-back range tests and it seems a 100% charge only gets us 100KM these days. Maybe 110 if we went all the way to turtle mode, but still, quite a drop. Our hilly location is certainly no help but there it is... Pretty soon I guess we'll charge to 100% every time just to get some range between charges. Thoughts? Yep, realistically that's about what we get these days. Have lost one bar (SOH = 84%). GOM = 130km @ 100% charge, but approx 100kms in reality, esp longer stints between towns at 60-90kmh, tyres at 42psi. |
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Post by lesmando24 on Apr 8, 2015 8:48:17 GMT 11
I have lost 3 bars and get 120km at 50-80km/h and 90 - 100km at 90-100km/h
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Post by Feng on Apr 8, 2015 9:43:05 GMT 11
Is it because Killara is an elevated area of Sydney and if you leave your home on a full charge you waste the opportunity to regenerate as you head downhills? If you charge to 100% at Steve Jarvin (for example) and did some local driving before heading home you might get better results since the starting point is a lower elevation.
I remember Duncan commenting on the colour of your wheels when we had the meet. He thought they were custom tinted when it was just brake dust!
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Post by richardh on Apr 10, 2015 23:52:18 GMT 11
Jim, what is your energy economy reading? It may help explain your range. Mine is usually 0.15 to 0.16.
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Post by kris on Apr 23, 2015 17:21:59 GMT 11
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Post by Feng on Apr 23, 2015 17:38:39 GMT 11
I've got a cell which does that too when it's low. It looks normal when the battery is charged.
179 L1/L2 charges in 20k seems low, do you charge to 100% and drive it for a few days until it's almost empty? That might be wearing the pack out faster. I could be wrong, someone else here might want to confirm. I think charging to 80% daily and using 100% for when you need it is better for the pack.
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Post by southernvolt on Apr 26, 2015 0:44:05 GMT 11
do you ever do a fast charge? I remember reading about the occasional DC fast charge freshens up the battery. I certainly noticed an improvement in battery percentage health on leaf spy after a fast charge.
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Post by Jim Hare on Apr 26, 2015 8:59:11 GMT 11
Interesting. It's certainky been a while since my last fast charge. I always thought it was the opposite, that fast charging put a lot of strain on the be batteries. So it can have a freshening effect? do you ever do a fast charge? I remember reading about the occasional DC fast charge freshens up the battery. I certainly noticed an improvement in battery percentage health on leaf spy after a fast charge. |
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Post by southernvolt on Apr 27, 2015 19:59:35 GMT 11
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Post by southernvolt on Apr 27, 2015 20:07:05 GMT 11
The results of a trial seem to indicate that DC fast charging is not harmful. See quote below. I have read about temp being a major contributor to battery health loss. It seems to gel with what a lot of radio control enthusiasts have known for a long time about recharging batteries for RC vehicles. Don't expose them to heat, don't thrash them (i.e. lots of load generating heat and strain, etc). Let them cool down before charging and other tips are I think as relevant to big cars running lithium ion as to radio controlled cars running lithium ion rechargables.
Laptops have been running similar battery tech for years and we know what kills those batteries - leaving them plugged in all the time i.e. at 100% all the time. Seems to me that keeping the electrons flowing was always good for laptops: keep them running down to 10-20% and then charging them up. Also giving them a full discharge every so often and charging them up to get the charge controllers to work it all out. I like to think that DC charging to 100% every so often is good for them. I measured before and after a fast charge and leaf spy showed a slight increase in battery health. I haven't checked mine for ages but touch wood I'm almost at 20,000kms and haven't noticed any range increase and haven't lost a bar. I don't expect to far double that I hope.
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Post by lesmando24 on May 4, 2015 17:02:03 GMT 11
I still get 110ish from an 80% charge, hurray! Will see if it keeps this up when winter starts. We still have 20C days.  |
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Post by organist on Jun 4, 2015 17:24:59 GMT 11
I'm a new owner of a LEAF (so this is my first post - just to see how the system works) - I'm getting 90km off an 80% charge at open road speeds of 90km/h.
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Post by Phoebe on Jun 4, 2015 17:30:42 GMT 11
Hi organist. Welcome to the forum and enjoy your LEAF. I always do 100% charge so I don't know how far you should go on 80%.
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Post by markrmarkr on Jun 5, 2015 21:42:47 GMT 11
I'm a new owner of a LEAF (so this is my first post - just to see how the system works) - I'm getting 90km off an 80% charge at open road speeds of 90km/h. That looks about right. You can do a lot bettet by driving slower, and thinking ahead. Sent from my SM-N9005 using proboards |
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Post by philcanberra on Jul 7, 2015 13:55:29 GMT 11
I just lost my first capacity bar at 39795km and we are lucky to get 60km from a 100% charge. I pushed 64.9km the other day. That's from a 100% charge with no heater and smooth driving, mainly at 80kmh
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Post by Feng on Jul 7, 2015 14:20:22 GMT 11
So the Canberra cold is good for prolonging your battery capacity but bad for your range?
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Post by jeffjl on Jul 7, 2015 22:26:07 GMT 11
I just lost my first capacity bar at 39795km and we are lucky to get 60km from a 100% charge. I pushed 64.9km the other day. That's from a 100% charge with no heater and smooth driving, mainly at 80kmh 39,795km. I'm jealous. Do you measure how much of a charge you put in for the 60km? I am guessing you can only get half the kWh into the battery due to your temperatures so while the range is not good it is still efficient. |
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Post by philcanberra on Jul 10, 2015 13:46:12 GMT 11
I just lost my first capacity bar at 39795km and we are lucky to get 60km from a 100% charge. I pushed 64.9km the other day. That's from a 100% charge with no heater and smooth driving, mainly at 80kmh 39,795km. I'm jealous. Do you measure how much of a charge you put in for the 60km? I am guessing you can only get half the kWh into the battery due to your temperatures so while the range is not good it is still efficient. Hi, After a 100% charge my LeafPro app shows the battery is holding 18.9kWh and when I got home I had about 2.1Kwh remaining. But it was -7c that day and we only used the pre-heating and not while driving |
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Post by jeffjl on Jul 11, 2015 16:37:48 GMT 11
An efficiency of 0.28. That does not seem too good. Thankfully it does not get below 5C here in Perth too often.
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