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Post by Cachexian (Gordon) on Dec 15, 2015 22:22:29 GMT 11
Just installed the Konwei elm327 ob2 adaptor tonight and Leafspy pro for android. Works a treat.
now to work out how to use it...
SOH 86%. So looks like I'll lose a bar fairly soon. I hear that it goes at 85%. I'm. Bit disappointed although it is what I was expecting...sort of.
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Post by mike on Dec 16, 2015 20:14:14 GMT 11
Were did you buy the Konwei elm327 ob2? I've purchased 2 OBD2 blue tooth readers but both had the wrong firmware version, so unable to get it to communicate.
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Post by Cachexian (Gordon) on Dec 17, 2015 6:59:58 GMT 11
eBay. Australian seller. Cost $30 incl shipping (so same as for Amazon). Delivered in 2 days.
It says random colour but I asked for black and received a black one.
I'll post the link to the eBay page.
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Post by Cachexian (Gordon) on Dec 17, 2015 7:04:12 GMT 11
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Post by jeffthewalker on Apr 12, 2016 16:52:06 GMT 11
I have LeafSpy Pro and a Konwei OBD2 Bluetooth.
I have just rolled over 10,000km and still have 12 bars.
But, each time I fill to 100% LeafSpy tells me I have something like;
SOH 86%
SOC 91%
GIDs 82% 229
kWh 18
The kWh is what is troubling me. That is 75% of the original "book value" of 24kWh. I suppose that I should be just as concerned with the other numbers as they all relate to a battery that is no longer "book value".
My range, as expected, is all over the place depending on previous and current driving conditions. I would say range is more or less as expected.
Am I over concerned?
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Post by hieronymous on Apr 12, 2016 18:19:54 GMT 11
I have LeafSpy Pro and a Konwei OBD2 Bluetooth. I have just rolled over 10,000km and still have 12 bars. But, each time I fill to 100% LeafSpy tells me I have something like; SOH 86% SOC 91% GIDs 82% 229 kWh 18 The kWh is what is troubling me. That is 75% of the original "book value" of 24kWh. I suppose that I should be just as concerned with the other numbers as they all relate to a battery that is no longer "book value". My range, as expected, is all over the place depending on previous and current driving conditions. I would say range is more or less as expected. Am I over concerned? The Leaf HV battery is nominally rated at 24KWh but in real life delivers about 21.x KWh when new. Your KWh of 18 at 100% is near 86%, about right. The most useful Leaf Spy battery indicator is AHr. When new, AHr (info from the MNL forum) is claimed to be 66.2556 for the Gen 1 Leaf. Bar loss is commonly observed about 55.5 for 1 bar, 51.5 for 2 bars, and 48.8 for 3 bars. I expect your AHr is about 56.x. SOH is a rough guide to AHr as a percentage, Hx is thought to be inversely proportional to the increase in resistance from degradation (a sort of SOH), SoC is relative to current battery capacity ,not new capacity, so not a measure of degradation, and KWh (GIDs alternatively) is the best indicator of range, relative to your real-time economy (km / KWh). KWh is calculated from the GID value multiplied by the Wh/GID value in the settings (normally 77.5), so they are equivalent measures. So, the key values to watch are AHr for battery capacity, and KWh for range. |
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Post by rusdy on Mar 1, 2018 14:30:41 GMT 11
For those who have Leafspy, I've found out this thing is extremely useful to find out the actual remaining capacity when it goes to lower range (considering our Australian unique position where only 2012 Leaf is available). For my immediate need to have 'long range' trip, at least now I know I can comfortably use 12-ish kWh usable capacity (therefore the requirement to lower my speed). I've just completed 'empty' test over the weekend and found out the cells start to grow in imbalance once it hits 6 - 7% (VLBW already chiming since 8 - 9%). I'm not as brave as this guy who tested all the way to turtle though. From that guy's report, at least now I know my Leaf battery behaviour is typical. Looks like once we hit VLBW, that is practically the 'empty' point. Very handy excerpt from that guy's report: Low Battery Warning: Voltage min/avg/max = 3.643 3.655 3.665 (22mV)
Very Low Battery Warning: Voltage min/avg/max = 3.654 3.675 3.704 (50mV)
Turtle Batt: Voltage min/avg/max = 2.980 3.034 3.102 (122mV)
Which is very similar to mine (apart from the turtle, which I did not dare to test). It's worth to note that once it hits VLBW, voltage sags very quickly to turtle. The behaviour is expected from typical lithium battery profile. Long story cut short, I'm a bit disappointed how accurate Leaf BMS is (not the GOM). I was hoping to find 'hidden juice' at the bottom end of charge due to the inaccuracy. |
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