16vjohn Posted June 28, 2018 at 02:18 PM Report Share Posted June 28, 2018 at 02:18 PM Has anyone purchased or used the "Sense" EVSE? It has programmable amperage settings. There are a few non-traditional vendors on the internet as well as eBay. http://www.lant-technology.com/product/product238.html Price and programability are my main motivators. It has a Duosida cord, which I've found to be of decent quality. Quote Link to comment Share on other sites More sharing options...
murphy Posted June 28, 2018 at 03:18 PM Report Share Posted June 28, 2018 at 03:18 PM You can set an EVSE to any current that you want, that is just it telling the car what it is capable of. The car is not going to go any higher that 12 amps at 120 volts or 16 amps at 240 volts. An EVSE is not a charger, the charger is built into the car. An EVSE is basically a big contactor (relay) with logic to control the process. I have charged my car many times with an EVSE that is capable of 40 amps. It is a 240 volt only EVSE and the car uses 16 amps. Quote Link to comment Share on other sites More sharing options...
16vjohn Posted June 28, 2018 at 03:23 PM Author Report Share Posted June 28, 2018 at 03:23 PM You can set an EVSE to any current that you want, that is just it telling the car what it is capable of. The car is not going to go any higher that 12 amps at 120 volts or 16 amps at 240 volts. An EVSE is not a charger, the charger is built into the car. An EVSE is basically a big contactor (relay) with logic to control the process. I have charged my car many times with an EVSE that is capable of 40 amps. It is a 240 volt only EVSE and the car uses 16 amps I know that... sorry, I should offer context. I need to go down from 12a to 10a and sometimes 8a. It has to do with the sharing of a single outlet at work. Regarding your comment about setting an EVSE and any current... I am unaware of this... can you elaborate? I had a Nissan EVSE from EVSEUpgrade.com that was programmable to between 8 and 16a. There was a special procedure that involved jumping the comm wires on the J1772 and clicking the J1772 button one click for the amount of amps you want. Besides the Nissan EVSE, and the above "Sense" EVSE, I'm unaware of any others that are programmable and also not overpriced. Quote Link to comment Share on other sites More sharing options...
murphy Posted June 28, 2018 at 03:41 PM Report Share Posted June 28, 2018 at 03:41 PM I have never seen a programmable J1772 EVSE. Your mention of being able to reduce the max value is in line with how the J1772 spec works. The 40 amp EVSE I mentioned was made by Leviton and cost over $1000. That was highway robbery. The Tesla HPWC (high power wall connector) can be configured with dip switches to values up to 80 amps and costs around $500 and is 1/8 of the size of the Leviton. It can only be used with a Tesla because of the unique Tesla connector. Quote Link to comment Share on other sites More sharing options...
16vjohn Posted June 28, 2018 at 04:20 PM Author Report Share Posted June 28, 2018 at 04:20 PM I have never seen a programmable J1772 EVSE. Your mention of being able to reduce the max value is in line with how the J1772 spec works. The 40 amp EVSE I mentioned was made by Leviton and cost over $1000. That was highway robbery. The Tesla HPWC (high power wall connector) can be configured with dip switches to values up to 80 amps and costs around $500 and is 1/8 of the size of the Leviton. It can only be used with a Tesla because of the unique Tesla connector. Yeah, the EU Nissan EVSE from the factory has programmability. The NA Nissan EVSE is modified by EVSEUpgrade, which essentially changes the soldiering inside to allow for 240v. In doing so, the programmability feature is unlocked as it is on the EU unit. The reason EVSEs are expensive is because of J1772. The car doesn't discriminate current, but the car will only pull the current for which the EVSE reports it is capable of. If the EVSE says 8a, the vehicle will pull 8a. Obviously, my use case is fringe, but I was definitely spoiled by my Nissan EVSE. Quote Link to comment Share on other sites More sharing options...
breeves002 Posted July 11, 2018 at 09:33 PM Report Share Posted July 11, 2018 at 09:33 PM Just a note on this.... I've seen other 120v EVSEs that have a built in current adjustment. Usually 12A/6A. I've also seen some that can do 16A @120v on a 20A circuit. Most EVSEs can have the current lowered with jumper settings. I have a Siemens one at my office and GE one at home. Both have jumper settings to lower the current. Wonder if the battery charger would take more then 12A @ 120V? Quote Link to comment Share on other sites More sharing options...
murphy Posted July 11, 2018 at 11:27 PM Report Share Posted July 11, 2018 at 11:27 PM (edited) No matter what size or capability EVSE you connect to the car the car decides what the maximum current will be.At 120 volts it is 12 amps.At 240 volts it is 16 amps. Edited July 12, 2018 at 10:35 AM by murphy Quote Link to comment Share on other sites More sharing options...
16vjohn Posted July 12, 2018 at 02:43 AM Author Report Share Posted July 12, 2018 at 02:43 AM Just a note on this.... I've seen other 120v EVSEs that have a built in current adjustment. Usually 12A/6A. I've also seen some that can do 16A @120v on a 20A circuit. Most EVSEs can have the current lowered with jumper settings. I have a Siemens one at my office and GE one at home. Both have jumper settings to lower the current. Wonder if the battery charger would take more then 12A @ 120V? Hmmmmmmmmmmmmm.... I'm going to crack open my Duosida and have a look. Thanks for the suggestion. Quote Link to comment Share on other sites More sharing options...
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