JoeS
Site Moderator
Posts: 3748
Joined: Thu Dec 15, 2011 5:47 am
Location: Silicon Valley, California

Re: Problem Charging but it isn't the battery

Sun Aug 18, 2019 7:18 pm

Hi ajsykes07. Presume you're aware of the 'timeout' or pause in charging that the i-MiEV performs randomly. It can initiate at any time after the start of charging and it lasts anywhere between six minutes and about 20 minutes. After this pause, the charging resumes. and the only identified conflict has been with a dual-port ChargePoint public EVSE where the two ports share a common power line, in which case the i-MiEV inexplicably continues charging but at a 1.1kW rate instead of the usual ~3kW.

We haven't determined what triggers this timeout and it's speculated that the reason for it is to measure voltage sag when charging is supended to see if perhaps it's excessive and might be caused by a defective cell. No other EVs do this to our knowledge. Unplugging the car and plugging it back in overrides this timeout and the car continues charging normally.

All EVSEs (except for the specific dual-port ChargePoint) allow the car to resume charging properly after it concludes this 'timeout'. We have numerous references and screenshots of this peculiarity scattered throughout this website.

Could this be your problem, or might it be something else? Have you waited sufficient time (up to 20 minutes) to see if charging resumes by itself?
EVs: 2 Wht/Blu SE Prem., '13 Tesla MS85, 3 156v CorbinSparrows (2 Li-ion), 24v EcoScoot(LiFePO4)
EV Conv: 156v '86 Ram PU, 144v '65 Saab 96
Hybrids: 48v1kW bike
ICE: '88 Isuzu Trooper. Mothballed: '67 Saab (orig.owner), '76 MBZ L206D RHD RV

ajsykes07
Posts: 2
Joined: Sun Aug 18, 2019 3:35 pm

Re: Problem Charging but it isn't the battery

Sat Aug 24, 2019 1:23 pm

Hello there. I am familiar with the "timeout" during charging, I've noticed that ever since I got my Juicebox pro two years ago and have been able to see charging session graphs. I've determined this isn't what I'm experiencing though. If I don't catch the issue and manually override it, via the remote or by unplugging and plugging in again, it will sit all night without charging.

DBMandrake
Posts: 170
Joined: Mon Mar 20, 2017 4:57 am
Location: Scotland

Re: Problem Charging but it isn't the battery

Fri Aug 30, 2019 11:09 am

ajsykes07 wrote:Hello there. I am familiar with the "timeout" during charging, I've noticed that ever since I got my Juicebox pro two years ago and have been able to see charging session graphs. I've determined this isn't what I'm experiencing though. If I don't catch the issue and manually override it, via the remote or by unplugging and plugging in again, it will sit all night without charging.

When you say it only happens with Level 2 charging do you mean it doesn't happen with Chademo, or it doesn't happen with Level 1 (110v) charging ?

Level 2 charging operates at 230-240v AC, and these cars seem to abort charging (or fail to start) if the AC voltage goes over about 247 volts.

Here in the UK the AC voltage is typically 230-240 volts, however the specs allow it to range from 216 to 253 volts, so it can be quite a problem here!

I discovered this during bad weather last winter where our AC voltage was up to 248 volts and the car would not charge. The symptom is the EVSE clicks on, the fan on the back of the car does its usual run for a few seconds, the charge light on the dashboard flashes for a few seconds but instead of then going solid red it aborts and the EVSE drops out again.

If the car is already charging and the voltage increases it will abort charging and will not start again even if the voltage drops to a more acceptable level later - you have to unplug it and plug it in again. As the AC voltage can rise a bit into the late evening as the load diminishes (including the diminishing load from the car as the charge starts tapering) this means a charge session could abort randomly some time after it started due to changes in AC load and supply at the property.

So have a look at your charging session graphs and (assuming they report voltage) see if there is any correlation between high voltage and aborted charging.

If you have access to a MUT-III read the fault codes for the OBD (onboard charger) ECU soon after the problem occurs - charge sessions aborted due to high AC voltage record a fault code, and it's likely that charge sessions aborted for other reasons will as well...
- Simon

EV: 2011 Peugeot Ion
ICE: 1997 Citroen Xantia V6

dkfuel
Posts: 1
Joined: Wed Oct 02, 2019 4:58 pm
Location: Los Angeles

Re: Problem Charging but it isn't the battery

Wed Oct 02, 2019 6:12 pm

Hello! My first post and luckily I found this topic so I didn't have to start a new one. I am having the exact same issue. My 2012 iMiev will randomly stop charging. I've read over the type of questions being asked and it may very well be related to the EVSE's I've been using. The location that I use has what appear to be "old" EVSE's as they have been there quite some time. There are no markings on them to indicate model number or manufacturer, but there is a 1-800 number I can call if I'm having problems. What are the known ones that have problems with our vehicles? What specific questions can I ask them to nail down if they are the problem?

The car is currently at the Mitsu dealership here in the United States. I took it in with an almost depleted battery. They let it charge overnight on their L2 charger and of course it fully charged. They found no codes related to the battery or the charging system in the ECU. I was hoping this would be a cut and dry case of the new recall on the OBC being the issue and that'd I'd get it swapped and be on my way. Alas, they won't replace anything under warranty without error codes. So basically I'm looking at a $130 to find out nothing is "wrong" in their eyes (although I think we can all agree the timeout "feature" is a major bummer.)

My problem with this is I live in an apartment and cannot charge it here. So I have to take it to an EV station three miles away and scooter back to my apartment. Going back and forth every hour to see if it has shut off is a real drag. I'd like to sell it and move on specifically because of this but having to tell someone "you can't use a specific EVSE" or it won't work and trying to convince them it's not a defect and just have to deal with it. There value is too low already!

I forgot to mention that I have a generic level 1/2 charger that I tested on it before taking it in to the dealership. It would completely turn off after 5-10 mins, then reboot and start charging again. The process repeated three times before I gave up and took it in.

Anyway,any advice or tips would be appreciated. I'm ready to provide any info that can help resolve this (if it is something that can be resolved.)

Thanks!

JoeS
Site Moderator
Posts: 3748
Joined: Thu Dec 15, 2011 5:47 am
Location: Silicon Valley, California

Re: Problem Charging but it isn't the battery

Thu Oct 03, 2019 8:12 am

dkfuel wrote:Hello! My first post and luckily I found this topic so I didn't have to start a new one. I am having the exact same issue. My 2012 iMiev will randomly stop charging. I've read over the type of questions being asked and it may very well be related to the EVSE's I've been using. The location that I use has what appear to be "old" EVSE's as they have been there quite some time. There are no markings on them to indicate model number or manufacturer, but there is a 1-800 number I can call if I'm having problems. What are the known ones that have problems with our vehicles? What specific questions can I ask them to nail down if they are the problem?
dkfuel, welcome to the forum. Very early (2012) there was an unusual timing issue that resulted in some incompatibility with Clipper Creek EVSEs, but that was taken care of by both Mitsubishi (recall) and Clipper Creek (design mod), each independently having a fix which eliminated the problem.
dkfuel wrote:The car is currently at the Mitsu dealership here in the United States. I took it in with an almost depleted battery. They let it charge overnight on their L2 charger and of course it fully charged. They found no codes related to the battery or the charging system in the ECU. I was hoping this would be a cut and dry case of the new recall on the OBC being the issue and that'd I'd get it swapped and be on my way. Alas, they won't replace anything under warranty without error codes. So basically I'm looking at a $130 to find out nothing is "wrong" in their eyes (although I think we can all agree the timeout "feature" is a major bummer.)
Inconvenient, yes, but presumably Mitsu had a good reason for instituting this. Usually not even noticeable unless at a public EVSE and in a hurry to get underway.
dkfuel wrote:I forgot to mention that I have a generic level 1/2 charger that I tested on it before taking it in to the dealership. It would completely turn off after 5-10 mins, then reboot and start charging again. The process repeated three times before I gave up and took it in.
I don't understand what you mean by "level 1/2 charger", but I presume you're talking about the stock Mitsubishi (Panasonic) EVSE that came with the car? Did you demonstrate this to the dealer?

Really feel for you as multi-unit-dwellings are the greatest inhibitor to EV adoption, with many states, counties, and cities passing ordinances attempting to alleviate this problem by facilitating charging station installations. Talking with the landlord or management company may yield some sympathy and accommodation to allow you to charge on-premises, as all you need in most cases is access to a simple 120vac outlet. Around here, workplace charging is a very common solution.

Whereabouts are you located? http://myimiev.com/forum/viewtopic.php?f=13&t=3196
EVs: 2 Wht/Blu SE Prem., '13 Tesla MS85, 3 156v CorbinSparrows (2 Li-ion), 24v EcoScoot(LiFePO4)
EV Conv: 156v '86 Ram PU, 144v '65 Saab 96
Hybrids: 48v1kW bike
ICE: '88 Isuzu Trooper. Mothballed: '67 Saab (orig.owner), '76 MBZ L206D RHD RV

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