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Messages - Mr Analog

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Zero Motorcycles Forum | 2013+ / Re: DSR charge tank stops charging after a few minutes
« on: November 25, 2021, 12:13:03 PM »
Quote from: MIKKW on November 21, 2021, 08:45:58 AM
I read somewhere in the charging instructions that the small on-board charger (OBC) works in tandem with the Charge Tank Charger (CTC). At the very start of the charge cycle the dash reads out the information from the OBC, after 15 or more seconds the dash will then update the anticipated charge time calculated after the delayed activation of the CTC. This may account for the differences in reported charging time calculations you mentioned. If that activity cycled during charging WITHOUT turning the key off and on it may indicate and unstable CTC?

I used the charge tank again last weekend. Charged from <50% to about 90% with the key out. It seemed to charge continuously with no interruptions. However, the cycling remaining time behavior was the same. It went to 0:00 every few minutes, then to about double the expected charge time and then settled at a realistic charge time.

I’ll time the display cycling more carefully next time, and I’ll also try to measure how long it takes to charge every x%.

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Zero Motorcycles Forum | 2013+ / Re: DSR charge tank stops charging after a few minutes
« on: November 14, 2021, 12:45:06 PM »
Update: I used the charge tank twice today with no issues.

The first charge was at a Blink station. I started at about 75% and charged up to 96%. I left the bike turned on for a full minute or two before turning it off and taking the key out. Charge rate was about 5kW. The rate of charge seemed normal (around 1% per minute) and it charged continuously until I took the plug out.

The second charge was at a Volta station. This time I started at 49% and charged up to 76%. Wattage was between 5.5kW and 6kW. Like the first charge, I left the bike on for a minute or two then took the key out. Again, it charged continuously until I decided ti stop.

The only odd thing I noticed during the second charge was that the remaining time cycled from 0:00 to around double the realistic time, then settled at a realistic time. For example, at 70% charge it would show 0:00 then 1:00 then 0:30 over the course of about one minute. It seemed to be doing this whenever I checked on the bike during the charge.

I didn’t monitor closely enough with the app to determine if the wattage was actually dropping or not. I also didn’t notice the behavior during the first charge, but I can’t rule out the possibility that the same thing was happening but just didn’t register. I’ll pay closer attention to the time remaining in the future.

Needless to say, I’m happy the charger seems to be working. Now I need to try another ChargePoint location to see if there’s any correlation between the issues I had last week and ChargePoint hardware. I’ll keep this thread updated with results.

The thought occurred to me that maybe the J port contacts are simply dirty or oxidized from sitting unused for the last 3 years. If so, then plugging in a charger a few times could clean them enough to get a more stable connection. That sounds like wishful thinking so I’m sticking to a troubleshooting mentality until I have more data points. I will, however, take a close look at the J port for any signs of oxidation.


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Zero Motorcycles Forum | 2013+ / Re: DSR charge tank stops charging after a few minutes
« on: November 09, 2021, 12:41:21 PM »
Thanks Don!

No, I haven’t tried intentionally leaving it on but I did leave it on for a while (around 15 minutes) when it charged from 70% to 95% in one go. As I recall, it stopped charging not long after I turned the key off. I remember because I read the instructions during that first charge and realized I was supposed to turn it off. :)

I’ll test the theory this weekend by charging with the bike on and off at a single charge station and report back. Thanks for the tip!

4
Zero Motorcycles Forum | 2013+ / DSR charge tank stops charging after a few minutes
« on: November 09, 2021, 09:20:40 AM »
Hi everyone, I wonder if you can help me with a charging problem.

I recently purchased a 2018 DSR with a charge tank and tried out level 2 charging for the first time this weekend. I charged at two locations, both with 6kW ChargePoint stations. The first charge went pretty well. The bike was at about 70%. It charged up to 95% and then the bike shut down. I thought it was weird that it stopped by itself before 100% but I didn’t want to wait around for the last 5% anyway so I moved on.

The second location was where I ran into trouble. The bike was at about 50%. I plugged in, verified that it was charging at about 6kW, turned the key off, took it out and walked away. When I came back maybe 10 minutes later the bike was completely shut down: no battery indicator or flashing charge light.

The ChargePoint indicated that it was still charging so I tuned the bike back on. It resumed charging and indicated that it was at about 60%. Then it shut down again after a few minutes with another 3-5% charge. I turned it on and it resumed again, then shut down again. At one point I ended the charge and started from scratch. Then I tried a different charging station (there were several at this location). Same thing every time. The bike shut down after a few minutes but the ChargePoint indicated that it was still charging.

I kept charging the bike up in small increments until I reached about 75% then I rode home. I never saw any error codes but I’m not sure if I was ever watching the screen at exactly the moment it shut down.

Has anyone else expierienced this? Any tips or troubleshooting techniques I should try?

FYI, the bike is in virtually showroom condition with only about 1300 miles and the charge tank was already installed when the original owner purchased it. Other than the wonky charging, the bike operates perfectly and the battery pack appears to be in great condition. Cell balance is 1-2 mV at 100% and I get about one mile per 1% even when riding aggressively or at freeway speeds. The original owner said he kept the onboard charger plugged in all the time and only used the charge tank once to test it out.

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