Don
Site Moderator
Posts: 3022
Joined: Thu May 10, 2012 3:55 pm
Location: Biloxi MS

Re: [POLL] On-Board Charger and DC/DC Converter

Tue Sep 03, 2019 11:59 am

!.) Year and miles: Two cars, both 2012's one with 35K, the other with about 30K

2.) OBC Failure Experience: None on either car

3.) 12 Volt battery condition & age: Both replaced with Mazda Miata AGM batteries. The first one when the car was only about 3 years old because it had been in storage for about 10 months and the original battery was very weak when it was returned to service, the second car got a new battery proactively when it was 6 years old because of what I read here on the forum - Battery still seemed strong . . . . but it was 6 years old and no doubt on borrowed time

4.) 12 volt battery maintenance: - Zero. Never needed to add water, never trickle charged either one, though I probably should have on the car that was in storage . . . . but I didn't

5.) Charging history incidents: None that I can recall. For several years, we seldom charged either car to full - Maybe once every 6 weeks or so. Seldom need a full charge the way we use these cars. We can go several days, making 6 or 8 or 10 mile trips and then recharge to 80% or so when we get down to 20% or so. Lately we've been making more freeway trips and we have been letting them recharge to full most of the time

Because of all the recent failures reported here, we pretty much quit L2 charging completely a year or 15 months ago. One car recharges L1 at 12 amps using a modified OEM Panasonic EVSE and the other car uses a bone stock EVSE at just 8 amps. It's pretty hot here for 6 months or more and my 'theory' is that the added heat from L2 charging might be responsible for many of the failures. For the first 5 or 6 years when we were using L2 maybe 50% of the time, it was limited to 12 amps (2880 watts) max. Can't recall if either car has ever been recharged running 'full blast' at 3.2 Kw

Don
2012 iMiEV SE Premium, White
2012 iMiEV SE Premium, Raspberry Metallic
2012 iMiEV SE, White
2017 Chevy Volt Premier
2014 Ford Transit Connect XLT SWB wagon
2006 Itasca Navion Sprinter Motor Home

Lithim
Posts: 121
Joined: Tue Feb 05, 2013 2:17 pm
Location: Houston, TX.

Re: [POLL] On-Board Charger and DC/DC Converter

Tue Sep 10, 2019 5:00 pm

This may be of interest to people on this string:

As the owner of a 2012 IMIEV I recently received a letter from Mitsubishi.

...... " due to potential low durability of the capacitors on the circuit boards in the On-Board-Charger (OBC), the capacitors may short and cause the high voltage fuse in the Motor Control Units MCU) to blow. As a result, the drive battery may not be charged by regular charging and the 12V battery may not be charged. When this occurs, the power unit and 12V battery warning lights will turn on."

Mitsubishi is extending the warranty for the OBC to 10 years / unlimited miles.

TSB-19-54-016

Letter dated September 2019.

Mitsubishi Customer Relations; 1-888-648-7820 M-F 7AM.-4PM. PT

Stay charged my friend
2012, model ES
Silver with QC
Leased, now owned.

phb10186
Posts: 317
Joined: Fri May 13, 2016 12:58 am
Location: North London suburbs, UK

Re: [POLL] On-Board Charger and DC/DC Converter

Mon Sep 16, 2019 2:53 pm

I have 2 of them...

1. Year and mileage on your iMiev:

Car 1: 2012, 40,000 miles

Car 2: 2012, 21,000 miles

2. OBC failure experience:

Car 1: None

Car 2: None

3. 12V Battery Condition, Age:

Car 1: 1 year +, on second battery - currently a Bosch blue series battery from Costco (Honda Insight Gen 2 equivalent)

Car 2: 3 months, on third battery - currently a GS Yuasa black series battery (Honda Insight Gen 2 equivalent)

4. 12V Battery Maintenance Frequency and Procedures:

Car 1: nothing other than driving car normally

Car 2: nothing other than driving car normally

5: Charging history, any incidents of abnormal interruptions such as loss of AC mains, or pulling the AC plug to shut off (as opposed to pressing the J1772 button or automatic shutoff by the car):

Car 1: Very occasional abrupt charge interrupt (charge fail), less than 1% of charges, always left to charge fully after full charge cycle, J1772 plug disconnected first. Normally a mains power RCD trip actually. I think the couple of times this has happened have been in the winter months - i.e. colder.

Car 2: Very occasional abrupt charge interrupt (charge fail), less than 1% of charges, always left to charge fully after full charge cycle, J1772 plug disconnected first. Normally seems to be due to the very sensitive RCD on the wall L2 charger I think. I think the couple of times this has happened have been in the winter months - i.e. colder.


None of these two cars have been ChaDEmo'd more than about 5 times in their lives, car 1 is charged of 240 Level 1 domestic outlet, car 2 is charged by a level 2 240v wall charger... which is more or less the same thing actually.

Car 1 is used every day, charged 3 times a week or so, car 2 is charged once per week typically.

Zero failures on either car so far... they have been totally reliable. I somehow put this partially down to the UK mild climate that's also not overly dry, and the fact that the cars are almost always charged overnight when it's cooler, and re-charged normally at 2 bars or so.. i.e. full cycling.

Currently running another 2 hybrids, both 10+ years old, and no battery failures or glitches so far there either.... let's hope it all stays that way.

Have had the 12v batter go flat about 4 times on car 2, so far no issues there...
2012 I-MIEV Keiko Silver 21K
2010 Insight ES-T 64K
2009 RX400h 4WD - 86K
2001 Accord Type-V (F23 manual)
2009 Hornet CB600F
2008 SH300

686579
Posts: 10
Joined: Mon Nov 30, 2020 10:32 am

Re: [POLL] On-Board Charger and DC/DC Converter

Fri Jan 01, 2021 7:37 pm

1. Year and mileage on your iMiev: 2010 80xxxkm

2. OBC failure experience: currently working thru failure. 3k capacitors blown, and something else.....


3. 12V Battery Condition, Age: looks new(car is 1year old to me)


4. 12V Battery Maintenance Frequency and Procedures: voltage is 12.14 after a month of so of sporadic chad charging.


5: Charging history, any incidents of abnormal interruptions such as loss of AC mains, or pulling the AC plug to shut off (as opposed to pressing the J1772 button or automatic shutoff by the car): i did notice the charger socket both sides had some dark scorching unknown if from shorting or just dirt.
most days typical day is 40-60kms of travel so its charged overnight with the odd balancing charge in the morning(for about a hour or so)
outside that button is always pressed to disconnect(metal handle with leaver impossible to remove without pressing)

WReed82
Posts: 63
Joined: Wed Nov 28, 2018 10:05 am

Re: [POLL] On-Board Charger and DC/DC Converter

Sun Jan 03, 2021 8:37 pm

Hi Folks,

In a week will have had Maeve for two years.
Maintenance has been wash, wax, wiper blades.
Recently both rear tires started to need topping off about once a month, may try
replacing the valve stems. Or having tires re-seated on the rims.

1. Year and mileage on your iMiev: 2014 with 15,900 miles.

2. OBC failure experience: All good.

3. 12V Battery Condition, Age: Excellent, 1.5years old, AGM from Braille, B3121

4. 12V Battery Maintenance Frequency and Procedures: None.

5: Charging history, any incidents of abnormal interruptions such as loss of AC mains, or pulling the AC plug to shut off (as opposed to pressing the J1772 button or automatic shutoff by the car):
) Open EVSE charging interface, 240V, 12A rate.
) During hot weather we set it to charge after the day has cooled off, and only charge to about 80%.
) We live in a rural area that regularly has power glitches of several seconds, a few minutes, hours, and one time five days.
One evening I connected the J1772 and the next day the car was not charged. We had lost power for a few minutes, which interrupted the charge cycle, and it did not auto-restart.
) During a couple power outages a 300 watt inverter connected to Maeve has kept a couple LED lights on, the router live, charged a phone,
for about a 100 watt load.
For longer outages a 1000 watt inverter is connected to the 1982 diesel Toyota pickup with big, dual AGM batteries for powering the fridge or freezer.

Does anybody know if the 2014 models for sure have the newer OBC?

Thanks and good health, Weogo

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