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Author Topic: Zero Sr/s Frustration mounting  (Read 2862 times)

Zelidar

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Re: Zero Sr/s Frustration mounting
« Reply #15 on: April 29, 2020, 12:38:43 AM »

My two cents, here with a SR/F. The first type 2 male/female cable I used was sold as using three phases but I could not manage past 3 kW. Upon opening it I realized that only a single phase was wired. Two additional wires were needed to reach 6 kW so I kept the plugs but changed the cable. But you mentioned prior experience charging at 6 kW with a SR/F so I don't think you have a cable problem since you're able to compare. Regarding comparison, I remember noticing on a non-premium SR/F (the demo bike I used) how the second 3 kW charger wasn't physically installed, leaving some sort of an emptiness below the frunk. That shouldn't be any different with the SR/S.
« Last Edit: April 29, 2020, 02:33:19 AM by Zelidar »
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enaef

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Re: Zero Sr/s Frustration mounting
« Reply #16 on: April 29, 2020, 01:30:08 AM »

But so far with my Jesla and TeslaTap, 5.8 is the most I have seen on my display.

The same 5.8 max with me on my SR/F Premium: on my washing machine / dryer outlet at home (type T25 Switzerland) or on several 22 kW chargers on the rode (with Mennekes plug on the SR/F).
« Last Edit: April 30, 2020, 12:26:23 AM by enaef »
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stevenh

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Re: Zero Sr/s Frustration mounting
« Reply #17 on: April 29, 2020, 04:13:56 AM »

Correct the 6.6 I’m referring to is the charging station. On the dash charging has never been more than 2.8 kw on my Sr/s premium.
Well that sucks.  You mentioned that you emailed Zero.  Have you reached out to your dealer?

Quote
On my previous Sr/f premium IVe seen 6.6 Max.
This still confuses me.  I expect the display to always be under the 6.0kW theoretical maximum.
I could be wrong.  I often am.
But so far with my Jesla and TeslaTap, 5.8 is the most I have seen on my display.

My SR/F gets 5.4KW on the dash, and shows 6KW from the charger (Juice Box Pro 40 in my garage).  The same charger gets close to 7KW on my Honda Clarity (input), so I believe the input power won't go over 6KW on my SR/F Premium.

Steve
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gadgetgirl

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Re: Zero Sr/s Frustration mounting
« Reply #18 on: April 29, 2020, 10:32:04 PM »

@daniels1216, have you tried calling Zero at 1 (888) 786-9376? I've only needed to talk to them a couple times for my SR/F, and they were much more communicative when I started things via phone (and emails after that). Even before their support staff was working from home, it felt like they have a very small staff to handle things.
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DonTom

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Re: Zero Sr/s Frustration mounting
« Reply #19 on: April 29, 2020, 11:49:54 PM »

I understand some level 2 chargers drop to 3KW if multiple vehicles are connected (although I've not seen this myself).

Steve
I have seen such. It's when the two chargers are on the same circuit. The parking lot at the college in Grass Valley, CA is one such place where that happens. The chargers are always right next to each other. If the other vehicle leaves, the charge rate will double for the one that is left.

-Don-  Reno, NV
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daniels1216

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Re: Zero Sr/s Frustration mounting
« Reply #20 on: May 17, 2020, 11:53:14 PM »

After 2 weeks at the dealer they found nothing wrong with charging ( I’m still drawing 2.8kw max at 6.6 rated chargers with only the bike plugged in). The dealer referred me to the 866 number for these technical issues.
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MVetter

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Re: Zero Sr/s Frustration mounting
« Reply #21 on: May 18, 2020, 12:13:28 AM »

Just noting here that you will never actually see 6.6kW charge rate on a Premium SR/F or SR/S. The units deliver a maximum of 57 amps to the battery. Watts are a measure of Volts x Amps. If the bike is 0% dead empty, that's 95 volts. 95V x 57A = 5415 Watts or 5.4kW. At the mid point, 102 volts, that's 102V x 57A = 5,814 Watts or 5.8kW. At 80% or 110 volts thats 110V x 57A = 6,270 Watts or 6.3kW. Charging generally starts to slow down a little above this, but just for the sake of argument, let's pretend it didn't. Let's pretend it stayed at full power all the way to 100% full or 116.4 volts. 116.4V x 57A = 6634.8 Watts or 6.6kW.

Mathematically you will only ever see a max of 6.6kW if the bike was over 115 volts. But at that point, realistically, you're in voltage cutback and more like to see 1-3kW.
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NEW2elec

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Re: Zero Sr/s Frustration mounting
« Reply #22 on: May 18, 2020, 12:34:16 AM »

Hi Daniels1216, so this sounds like it just needs some good old trouble shooting.
So the dealers says nothing wrong with charging.  You need to make sure they say fully and clearly what the bike IS doing.
Are they plugging it into a wall and see it's taking power or are they taking it to a charging station with a working app link and seeing the bike charge at 6 kWs?

Let's say they did go to a station and got the full 6kWs, ok did they use your charging cable or one they had or just the one from the station.  Lets go do it again and film it.

What is your SOC when going to the station?  I assume you know it will ramp down the charging speed as it hits a higher SOC.  This "may" include a ramp down towards a lower top limited SOC, ex. 80% SOC max charging limit set.  IOW the BMS would now view 80% SOC as 100% and ramp down at sat 65%.  Just guessing here I have gen 2 bikes.

One other shot int the dark is, this was a standard bike priced as a premium by "mistake".  More of a long shot but I've seen bikes for sale with a "power tank" that was a charge tank and 2016 FXSs with factory new 7.2 batteries that were of course just the 6.5 but again "mistakenly" posted as 7.2. 

Let us know what you find out.

I see Morgan posted while I wrote this and I defer to his math on this but I assume you saw higher charge rates on your SRF so that's what your looking for with this bike as well.
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princec

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Re: Zero Sr/s Frustration mounting
« Reply #23 on: May 18, 2020, 01:20:19 AM »

Should the exact diagnosis of what is occurring not be in the logs?

Cas :)
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MVetter

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Re: Zero Sr/s Frustration mounting
« Reply #24 on: May 18, 2020, 02:48:32 AM »

I see Morgan posted while I wrote this and I defer to his math on this but I assume you saw higher charge rates on your SRF so that's what your looking for with this bike as well.

As far as I know the SR/F and SR/S have the same onboard charging units so their behavior should be identical.
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NEW2elec

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Re: Zero Sr/s Frustration mounting
« Reply #25 on: May 18, 2020, 03:40:06 AM »

Yeah that's what he was saying on the first page.  He had a SRF premium that he said charged at 6.6 (yeah I know) but the SRS "premium" wasn't doing the same.

I think there is often times a loss of information from what the owner tells the service center desk guy is wrong with the bike and what the desk guy tells the mechanic is wrong with it.  IOW "the guy says it's not charging" and not relaying that it's charging but not charging at a 6ish kW rate.  The mechanic plugs it up sees it taking a charge and says it's fixed.

Now this of course isn't what I'm saying for sure happened just saying it's a place to start looking.
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MVetter

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Re: Zero Sr/s Frustration mounting
« Reply #26 on: May 18, 2020, 03:57:17 AM »

I agree if he paid for the Premium model and he's not getting the right charging rates it should be fixed. My point is that, short of adding in the Rapid Charger, that bike will never see 6.6kW from the default onboard units.
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Crissa

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Re: Zero Sr/s Frustration mounting
« Reply #27 on: May 18, 2020, 04:30:57 AM »

Yeah, but 2.8 doesn't sound right at all.

How could they see nothing wrong, though?  Do they not have a charger to test against?  My dealer hadn't gotten one in until this year.

-Crissa
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NEW2elec

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Re: Zero Sr/s Frustration mounting
« Reply #28 on: May 18, 2020, 04:45:19 AM »

LOL Morgan I agree with your agree and I thought I was using enough code to show I agreed with your math with  (yeah I know) and 6ish.

Just restating the OP's specs.
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Hans2183

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Re: Zero Sr/s Frustration mounting
« Reply #29 on: May 18, 2020, 11:14:00 AM »

Easy to check, if you look under the "tank" there are vents. If one of those is blocked you only have a single charger.

Max I ever got with my premium is 5.7kW.
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