maini
Posts: 128
Joined: Wed May 14, 2014 2:47 pm
Delivery Date: 25 May 2014
Leaf Number: 339745
Location: NorCal Bay Area

Re: Cheap L2 EVSE by converting the 2013-14 Nissan L1 EVSE - $25

Fri Mar 04, 2016 11:02 am

arnis wrote:What is warming up? AWG7 would also warm up.

So how much? Now we get serious guys! Crunch some numbers to satisfy me :geek:


Go experiment on your own.. We are already satisfied with our solutions.. Cheers!!
2014 SV Cayenne Red with LED and QC port

BillHolz
Posts: 68
Joined: Tue Sep 27, 2016 6:32 am
Delivery Date: 07 May 2016
Leaf Number: 322345
Location: Norfolk, VA

Re: Cheap L2 EVSE by converting the 2013-14 Nissan L1 EVSE - $25

Tue Sep 27, 2016 6:54 am

I did this upgrade on my 2015 model EVSE this weekend. I used a 25' generator power cord from home depot with L14-20 connectors which was close out priced at $14. I cut the female end off with about 1 foot of cable to make an RV adapter with a 14-50 plug. Cut a few more 1 foot sections for more adapters. I used some thermistors that I had from old laptop battery packs to replace the thermistor in the original plug (yellow wires) and put one of them near the red wire splice. With the cover still off I plugged it in and charged my car. I used a IR thermometer to see if any of the new connections were hot and they were not.

This upgrade is sufficient to fully charge overnight, which the L1 charging does not do. I can still choose to use free public charging that is about a mile walk from work, but I no longer have to.
2015 SV no QC

maini
Posts: 128
Joined: Wed May 14, 2014 2:47 pm
Delivery Date: 25 May 2014
Leaf Number: 339745
Location: NorCal Bay Area

Re: Cheap L2 EVSE by converting the 2013-14 Nissan L1 EVSE - $25

Mon Oct 10, 2016 8:29 pm

Good Job!!

Looks like this mod has helped quite a few folks now. I am a happy user for over 2 years and many many charges. I have 23K miles on my vehicle now. Never needed to go bigger than 12A and 240V so far. I am told charging at the slow rate may be helping my batteries from not losing their capacity. So far I haven't lost a single bar!!.

Cheers!
2014 SV Cayenne Red with LED and QC port

pbridges
Posts: 10
Joined: Sat Jan 07, 2017 12:11 pm
Delivery Date: 07 Jan 2017
Leaf Number: 337705

Re: Cheap L2 EVSE by converting the 2013-14 Nissan L1 EVSE - $25

Fri Feb 10, 2017 3:55 pm

I really like this thread and how some very intelligent people have improved on this modification of a very simple pass through device that Nissan provided.
But some seem to think the leaf operates with 240vac input. When rather its 120vac inputs.
And the Nissan provided adaptor designed with components that directs multiple voltage legs at or about 120vac very basic.
I look at the mod coming out of CA for 300+$ as a friend has one so I dissected it with him with a time clock running. After showing him the differences, he understood the labor rates and component list.

I plan to make adjustment to my adaptor and build separate plug adaptor to bring single phase neutral back in.

Buts let's face it.. You could do the same with two 20ft long 8awg wires and get the same results, but the Nissan box looks nicer.

And yes I am and then some.
Paul
2014 S
Gun Metal Gray , QC, Open Source 50amp.
Denton, TX.
Working led options.

Commute = 75% 70mph

maini
Posts: 128
Joined: Wed May 14, 2014 2:47 pm
Delivery Date: 25 May 2014
Leaf Number: 339745
Location: NorCal Bay Area

Re: Cheap L2 EVSE by converting the 2013-14 Nissan L1 EVSE - $25

Sat Feb 11, 2017 12:32 pm

pbridges wrote:I really like this thread and how some very intelligent people have improved on this modification of a very simple pass through device that Nissan provided.
But some seem to think the leaf operates with 240vac input. When rather its 120vac inputs.
And the Nissan provided adaptor designed with components that directs multiple voltage legs at or about 120vac very basic.
I look at the mod coming out of CA for 300+$ as a friend has one so I dissected it with him with a time clock running. After showing him the differences, he understood the labor rates and component list.

I plan to make adjustment to my adaptor and build separate plug adaptor to bring single phase neutral back in.

Buts let's face it.. You could do the same with two 20ft long 8awg wires and get the same results, but the Nissan box looks nicer.

And yes I am and then some.


Pray tell us the difference and the results of that dissection.
2014 SV Cayenne Red with LED and QC port

pbridges
Posts: 10
Joined: Sat Jan 07, 2017 12:11 pm
Delivery Date: 07 Jan 2017
Leaf Number: 337705

Re: Cheap L2 EVSE by converting the 2013-14 Nissan L1 EVSE - $25

Sat Feb 11, 2017 7:54 pm

maini wrote:
pbridges wrote:I really like this thread and how some very intelligent people have improved on this modification of a very simple pass through device that Nissan provided.
But some seem to think the leaf operates with 240vac input. When rather its 120vac inputs.
And the Nissan provided adaptor designed with components that directs multiple voltage legs at or about 120vac very basic.
I look at the mod coming out of CA for 300+$ as a friend has one so I dissected it with him with a time clock running. After showing him the differences, he understood the labor rates and component list.

I plan to make adjustment to my adaptor and build separate plug adaptor to bring single phase neutral back in.

Buts let's face it.. You could do the same with two 20ft long 8awg wires and get the same results, but the Nissan box looks nicer.

And yes I am and then some.


Pray tell us the difference and the results of that dissection.



No. What it is, is what it is.
Paul
2014 S
Gun Metal Gray , QC, Open Source 50amp.
Denton, TX.
Working led options.

Commute = 75% 70mph

maini
Posts: 128
Joined: Wed May 14, 2014 2:47 pm
Delivery Date: 25 May 2014
Leaf Number: 339745
Location: NorCal Bay Area

Re: Cheap L2 EVSE by converting the 2013-14 Nissan L1 EVSE - $25

Fri Mar 03, 2017 11:44 am

Happy to report.. 25K miles done and almost 3 years of ownership. I have used this mod right from the beginning and have not had an issue at all. It has been in rain, dropped many times and is till robust and has shown no signs of any problems. I have to guess that I must have charge the car over 1000 times by now. Whether just topping off from 70% to 100% or going from as low as 19% to 100%, this EVSE mod has never had any issues and nothing has ever over heated. This EVSE has been used in Northern California Bay Area weather which ranges from 95F to 32F.

Cheers!! PM if you have any questions!!
2014 SV Cayenne Red with LED and QC port

LCR
Posts: 4
Joined: Thu Jan 05, 2017 12:45 pm
Delivery Date: 05 Jan 2017

Re: Cheap L2 EVSE by converting the 2013-14 Nissan L1 EVSE - $25

Sat Jul 15, 2017 6:11 pm

Bringing this back from the dead. I just did this on my brand new charger with no big problems and it's charging fine. Once I cracked open the case I didn't understand what everyone's problem is. At least the way I did it, nothing inside the charger is getting more than 120v the only thing receiving 240v is the car so I'd be interested to see what these $300 upgrades do differently.


I used a 4 prong dryer cord -$22
T-20 (torx) security bit- $5 Harbor freight set I have
1w, 22K ohm resistor - $2 It was a little big probably should have used a 1/2 watt resistor but they were out.
One butt connector $2/pack I could have tried soldering it with heat shrink which would be the proper way but I had a fancy butt connector that was 12g on one side and 10g on the other so it worked pretty sweet.
3 -10g spade connectors - $2 pack. The ones on the dryer cord were too big and the cable need shortening anyway
Soldering pencil $4 and solder $3. Way more solder than I'll probably ever use.

That's it, so yea, about $25. The rest is whatever you need to get the receptacle and breaker put in. This is the first time I've ever soldered anything either so that was the most frustrating trying to figure it out. If anyone wants some pictures I can get them uploaded.

maini
Posts: 128
Joined: Wed May 14, 2014 2:47 pm
Delivery Date: 25 May 2014
Leaf Number: 339745
Location: NorCal Bay Area

Re: Cheap L2 EVSE by converting the 2013-14 Nissan L1 EVSE - $25

Sun Jul 16, 2017 9:44 am

Good job!! The reason I used a L14 30 was because it was the cheapest 240V 30A 4 prong plug and socket available in the market or on eBay. The mod will never exceed 12A in any case. Your biggest cost was that 4 prong plug and socket. Yes working very fine for me no issues.. over 3 years now!!
2014 SV Cayenne Red with LED and QC port

LCR
Posts: 4
Joined: Thu Jan 05, 2017 12:45 pm
Delivery Date: 05 Jan 2017

Re: Cheap L2 EVSE by converting the 2013-14 Nissan L1 EVSE - $25

Sun Jul 16, 2017 1:20 pm

I chose the dryer plug because it was simple, already had the cable connected to it and I could buy it right there. a bare plug was $15 at home depot, I could have bought another kind of plug for $10 online but then I'd have to wait for shipping and I'd still have to buy cable either way and wire it all up. The dryer cable is either 4 or 6' long and was a simple thing.

For anyone else when you do this mod you'll see that the 4th, red wire, bypasses pretty much everything in the charger and skips right to the exit side going to the car. The other three wires; white, black, and green are the ones that get screwed into the control panel. It still only charges at 12amps (2,880w @ 240) but that is plenty of time for most anyone (about 8 hours from dead 0%)

I'd be interested to know how evseUp reprograms them for 16amps and I'm curious how much current the wires could handle, they look like 12g so it should be good for 20a or so. Anyone know of a DIY way to reprogram the OEM charger?

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