Jiminy
Gold Member
Posts: 34
Joined: Mon Oct 28, 2013 6:51 am
Location: San Antonio, Tx

Re: EVSE Upgrade

Mon Feb 06, 2017 9:39 am

One last thing: If you are looking for a used EVSE on Craigslist I can suggest that you use these key phrases and search the general FOR SALE section to make sure that you catch all possible categories that someone might have listed their EVSE for sale. Use the quotes. If anybody has another effective search string, please post it.

"Nissan Leaf"
"29690"
"3NA0A"

I paid $120 on Craigslist for the used Nissan Leaf EVSE pictured in the post two above this one.

Jim
2012 iMiEV SE
2011 Nissan Leaf SV
27 Schott 240's feeding them

Don
Site Moderator
Posts: 2508
Joined: Thu May 10, 2012 3:55 pm
Location: Biloxi MS

Re: EVSE Upgrade

Mon Feb 06, 2017 8:19 pm

Thanks for the time and effort you've put into this - I'm sure it will save people money, time and trouble by allowing DIY'ers to upgrade their own EVSE's

If you decide to do the upgrades for people who don't think they could do their own, let us know what the charge would be. I know I have one OEM Panasonic unit here which has never been upgraded - It's probably only been used a few times

My 'main' EVSE is a home built 'Open EVSE' which I constructed in a weatherproof plastic camera case. I use it only in L2 mode at 12 amps and my original upgraded OEM unit I use only in L1 mode at 12 amps - I originally thought it would be nice to carry in the car to be able to recharge from any outlet 'in the wild' I might run into, but in 5 years it's never made even a single trip away from home :lol:

Don
2012 iMiEV SE Premium, White
2012 iMiEV SE, White
2014 Ford Transit Connect XLT SWB wagon, 14,000 miles
1994 Miata 60K miles - Soon to be sold
1979 Honda CBX six into six

Jiminy
Gold Member
Posts: 34
Joined: Mon Oct 28, 2013 6:51 am
Location: San Antonio, Tx

Re: EVSE Upgrade

Wed Feb 08, 2017 3:35 pm

Don,

Thanks for the good words. I will ponder offering plug and play power supplies that allow for 240V AC Level 2 charging. I forgot to mention that after the changes are made inside the EVSE case, the unit is still perfectly functional as a Level 1 EVSE. If you put on a 240V plug you would then need a wiring adapter to go from whatever you used on the end of the cord to a 5-15 120V AC receptacle. If you left the 5-15 plug on the end of your EVSE it will still work at 120V as-is. Not sure why you would want to do that but it works nonetheless. And remember, this is not my design. I just copied exactly what EVSEUpgrade did.

Here is my modified Nissan EVSE with a Nema L6-20R to 5-15P adapter:

120vadapter.jpg
120vadapter.jpg (331.68 KiB) Viewed 1346 times


Jim
2012 iMiEV SE
2011 Nissan Leaf SV
27 Schott 240's feeding them

ed5000
Posts: 128
Joined: Mon Jul 27, 2015 9:22 pm
Location: Castro Valley, CA

Re: EVSE Upgrade

Sat Feb 18, 2017 12:01 am

Thanks Jim for your nice work here. I just ordered a couple power supplies and I'll let you know how it works out. I'm getting an extra for my brother who recently bought a black 2012 I-miev.

I can't wait until it gets here!

Ed
2012 ES, Cool Metalic Silver, no quick charge, no fog lights and no navi but a cold weather package for when it gets 13 below, wait - it never gets that cold here.
"Silver Shadow"

ed5000
Posts: 128
Joined: Mon Jul 27, 2015 9:22 pm
Location: Castro Valley, CA

Re: EVSE Upgrade

Sun Feb 26, 2017 8:46 pm

Okay, I received the power supply and installed it without too much trouble. The "ready" and charging" lights are working however, I'm only getting 1550 watts to the car when plugged into 240vac (6.3 amps per leg) A definite improvement but it would be nicer at 3600 watts. Did I miss something? I removed the varistor too.
2012 ES, Cool Metalic Silver, no quick charge, no fog lights and no navi but a cold weather package for when it gets 13 below, wait - it never gets that cold here.
"Silver Shadow"

Jiminy
Gold Member
Posts: 34
Joined: Mon Oct 28, 2013 6:51 am
Location: San Antonio, Tx

Re: EVSE Upgrade

Mon Feb 27, 2017 12:52 pm

ed5000,

I did confirm what you are seeing, more or less. The Mitsubishi branded EVSE that I modified charges the I-MiEV at 7.2A, the Volt at 8.0A and our Leaf at 7.6A. The Mitsubishi branded EVSE that EVSE Upgrade modified charges each car at 12.3A as seen on my ammeter and also indicated by the flashing charge light (13 flashes). The Mitsubishi branded EVSE that I modified does not output the flash code indicating charging amperage.

The Nissan branded EVSE that I modified charges all three cars at 10.7A, 2 Amps lower than the Nissan branded EVSE that EVSE Upgrade modified. I think this is only due to a firmware difference.

EVSE Upgrade mentions that their modified units are easily programmable for 6-12 Amps I cannot find the procedure on their website. Does anyone here have that documentation handy? Edit: I found the reprogramming link two posts down.

Jim
Last edited by Jiminy on Mon Feb 27, 2017 2:11 pm, edited 1 time in total.
2012 iMiEV SE
2011 Nissan Leaf SV
27 Schott 240's feeding them

PV1
Site Moderator
Posts: 2876
Joined: Fri Apr 27, 2012 4:22 pm
Location: Pittsburgh, PA
Contact: Website

Re: EVSE Upgrade

Mon Feb 27, 2017 1:20 pm

EVSEUpgrade also either re-programs or replaces the circuit in the brick, as the lights behave differently on their newer units.

To adjust the amperage, insert a paperclip into the proximity and pilot pins on the J1772 handle. The red Error light on the brick will start flashing rapidly. Then, simply click the release button the desired number of amps you'd like to charge. Each button press will flash the green light once (10 flashes = 10 amps), up to a max of either 12 or 13, based on voltage. When you've reached the desired amps, remove the paper clip, and count the flashes. If the amps are set to your liking, click the release button once more, then plug the car in. This resets to default after unplugging.

They also mention a way to override the GFCI for emergency generator charging, but I think you have to contact them to enable it to minimize abuse.
"Bear" - 2012 Diamond White Pearl ES with QC - 2/21/2013
Solar-powered since 10/10/2013

"Koorz" - 2012 Cool Silver Metallic ES with QC - 1/5/2015

2017 Bolt EV LT in Orange with QC - 7/31/2017

Driving electric since 2-21-2013.

Jiminy
Gold Member
Posts: 34
Joined: Mon Oct 28, 2013 6:51 am
Location: San Antonio, Tx

Re: EVSE Upgrade

Mon Feb 27, 2017 1:46 pm

I know they don't replace a circuit. There are no visible changes on the heavily potted boards other than the varistor removal.

I did find the charging Amperage reprogramming guide from EVSE Upgrade: http://evseupgrade.com/evse-programming-g2.pdf

I just tried reprogramming my EVSE Upgrade-modified Mitsubishi EVSE and it worked perfectly. I was able to switch from 6 Amps up to 13 Amps. I also tried 8 Amps for grins. When I tried doing the same procedure to the Mitsubishi EVSE that I modified it just showed that I was charging when I had the jumper inserted. I couldn't program it. No need to reproduce this test. I will look deeper into it. If anybody has any ideas I'm all ears.

Jim
2012 iMiEV SE
2011 Nissan Leaf SV
27 Schott 240's feeding them

Don
Site Moderator
Posts: 2508
Joined: Thu May 10, 2012 3:55 pm
Location: Biloxi MS

Re: EVSE Upgrade

Mon Feb 27, 2017 2:26 pm

The original EVSE Upgrade I purchased about 4 years ago wasn't adjustable. I sent it in as an L1 only 8 amp unit and they returned it as a 12 amp L1/L2 unit. Not sure exactly what they do to up the amps to 12, but with the original upgrade it was 12 amps only, L1 and L2 with no adjustment possible. Evidently there must be something more they do other than just replacing the transformer and removing the varistor. When I spoke with them they said that 12 amps was chosen because the wire gauge between the brick and the car would not support using 14 amps which would have allowed the iMiEV to recharge at maximum capacity

Don
2012 iMiEV SE Premium, White
2012 iMiEV SE, White
2014 Ford Transit Connect XLT SWB wagon, 14,000 miles
1994 Miata 60K miles - Soon to be sold
1979 Honda CBX six into six

Jiminy
Gold Member
Posts: 34
Joined: Mon Oct 28, 2013 6:51 am
Location: San Antonio, Tx

Re: EVSE Upgrade

Mon Feb 27, 2017 5:50 pm

Don,

Does the charging light blink on your EVSE when it is charging? If so, then you should be able to adjust the charging rate as per the pdf guide two posts back. Lemme know if it blinks. I bought mine 3 years ago and it is adjustable.

Jim
2012 iMiEV SE
2011 Nissan Leaf SV
27 Schott 240's feeding them

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