Mitchell
Posts: 27
Joined: Tue Jun 02, 2015 1:46 pm
Delivery Date: 05 Jan 2016
Leaf Number: 301722
Location: Toronto, Canada

Re: Lubricating the EVSE plug

Thu Mar 30, 2017 8:21 pm

91040 wrote:Check the Jplug to see if the rubber O ring is out of place.

Thanks I had not noticed there is an O ring. I checked and it does seem to be seated properly, way at the back.
2016 Leaf SL, grey, received 20160105, OpenEVSE

Mitchell
Posts: 27
Joined: Tue Jun 02, 2015 1:46 pm
Delivery Date: 05 Jan 2016
Leaf Number: 301722
Location: Toronto, Canada

Re: Lubricating the EVSE plug

Thu Mar 30, 2017 8:35 pm

AntronX wrote:The reason your EVSE plug requires force to insert is because OpenEvse supplies Duosida plugs with their kits. Those plugs use power sockets that apply way too much pressure on the pins inside the car's charge port. I investigated this problem here: viewtopic.php?f=26&t=22692&start=30#p473786

Interesting. While my J1772 says "J-Plug", it does appear to be identical to those great photographs and commentary you posted (though mine is apparently rated for 40 amps and yours says 16 amps, also mine has a small hole in the side, yours doesn't appear to).

I did open my J1772 to remove the annoying rubber cap (I only use it in my garage), but never thought the problem could be the receptacle contacts. AntronX, did you leave the ring springs off, or once you had reamed the sockets found you could leave them in.
2016 Leaf SL, grey, received 20160105, OpenEVSE

User avatar
TonyWilliams
Posts: 10021
Joined: Sat Feb 19, 2011 1:48 am
Location: San Diego
Contact: Website

Re: Lubricating the EVSE plug

Thu Mar 30, 2017 9:44 pm

Our company, Quick Charge Power, of Kennewick, Washington built the 40 amp cable and plug that you are using. On the opposite side of where it says "J-Plug, 40 amps max" should be our company name and logo.

We actually assemble those units here in Kennewick, but we are moving to San Diego county in April 2017. I have a 26 foot moving truck sitting outside, loaded up and ready to go south.

If you need service with your J-Plug, you are welcome to send it to us for a FREE inspection / tune up.

DO NOT REMOVE THE SPRINGS OFF THE PINS!!!! This could result in fire, injury or death. Do not "ream" the sockets of the pins, as this will remove the silver plating.

AntronX
Posts: 83
Joined: Sun May 22, 2016 12:17 pm
Delivery Date: 14 May 2016

Re: Lubricating the EVSE plug

Thu Mar 30, 2017 9:54 pm

Mitchell wrote:...AntronX, did you leave the ring springs off, or once you had reamed the sockets found you could leave them in.

If I remember right, I think I took them off, stretched them out a bit with reverse pliers and put them back in. They no longer apply spring force on the 4 contact socket "leaves", but serve as assurance to prevent any one "leaf" from bending out due to charge port pin misalignment upon plug insertion. Reaming the sockets did not help much. It helps that I have a charge port from wrecked leaf to test these sockets on. You could test your socket mods on the charge port on your leaf while your plug is taken apart. Make sure to try inserting signal sockets as well. They were very tight, almost as bad as power sockets! While the plug is apart, I would also use adhesive lined 3-1 heat shrink tubing to seal exposed copper wire at the crimp point. Since the plug is not water tight, moisture could get there and corrode it.
Last edited by AntronX on Thu Mar 30, 2017 10:19 pm, edited 2 times in total.

AntronX
Posts: 83
Joined: Sun May 22, 2016 12:17 pm
Delivery Date: 14 May 2016

Re: Lubricating the EVSE plug

Thu Mar 30, 2017 10:06 pm

TonyWilliams wrote:DO NOT REMOVE THE SPRINGS OFF THE PINS!!!! This could result in fire, injury or death.

Well, in that case, do not use these plugs. They are poorly engineered cheap Chinese knockoffs. Stock Yazaki plugs do not need to apply such strong clamping force on their sockets and they work fine at 30A. I had them tested at 50A without much overheating at the pins. When I ordered OpenEVSE kit, it came with your J-Plug 40A cable and your rebranded Duosida plug. I ended up returning it due to excessive force needed to plug it in and got stock Yazaki plug attached to your 40A cable which works great up to 65A in the shade, 45A in direct sun on hot pavement.
TonyWilliams wrote:Do not "ream" the sockets of the pins, as this will remove the silver plating.

I only reamed out the front face of the sockets to reduce the overly steep angle at which the socket "leaves" contact the pin which spreads them apart before sliding over the pin. I did not drill out the silver surface that actually contacts the pin. I did have to work it a bit to remove casting burrs or imperfections, as they were imprinting scratches on the pin surface.
These Duosida plugs are badly, cheaply engineered things that should not be sold in US.

BenTheRighteous
Posts: 59
Joined: Tue Feb 14, 2017 5:36 am
Delivery Date: 14 Feb 2017
Location: Raleigh, NC

Re: Lubricating the EVSE plug

Fri Mar 31, 2017 7:45 am

TonyWilliams wrote:Our company, Quick Charge Power, of Kennewick, Washington built the 40 amp cable and plug that you are using. On the opposite side of where it says "J-Plug, 40 amps max" should be our company name and logo.

...

If you need service with your J-Plug, you are welcome to send it to us for a FREE inspection / tune up.


Tony, yep, your description fits exactly the plug that I have. "J-Plug 40 amps max" on one side and QCP logo on the other.

I appreciate your offer to send the plug back for a tune up, but I'm not sure that's a viable option. I drive too many miles in a day to be able to fall back on nightly L1 charging while my L2 plug is away for service. Not to mention the cost of shipping each way - based on the Amazon shipping charge for a QCP plug, this "free" service would actually cost $60.

Instead, would you be able to just send out lower-tension springs for your customers like myself and others in this thread who feel that the insertion force required for your plugs is unreasonable?

I think that would be a quicker and lower-cost solution for all involved.
2017 Leaf S
OpenEVSE P50-D WiFi Kit
Raleigh, NC
USA

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