I don't yet have any instructions, and it's very complex. You have to build hardware to generate and sense the 1khz 5% PWM pilot signal then have a relay to switch the communications over to single-wire CAN, and then negotiate with the car's BMS over CAN. Once you have that working you have to voltage-match the battery voltage on the port within a few volts before it will honor your request to close the DC fast charge contactors. On top of that, once you get all that working, you are left with pretty much a direct DC connection to the pack which can easily sink thousands of amps if something goes wrong, so you have to really know what you are doing.
Unfortunately, I'm not prepared to write up a how-to for this reason. Someone will either get killed, or damage their car, or both. Then there's still the problem of the warranty! On Fri, Jun 28, 2024 at 10:02 AM Barry Oppenheim via EV <ev@lists.evdl.org> wrote: > Do you mind sharing the instructions or a link to the instructions? > > Thanks, > Barry Oppenheim > > On Fri, Jun 28, 2024 at 12:56 PM (-Phil-) via EV <ev@lists.evdl.org> > wrote: > > > I recently figured out a safe way to export power from any Tesla's charge > > port. I got HV DC power export working from the port at around 6kW, > which > > could then be fed into an inverter for AC power. > > > > However, Tesla still instantly voids your warranty if you do this. I > have > > a salvage Tesla, so it doesn't matter to me, but it really dashes any > hope > > of offering a product. > > > > Tesla has always had this clause to void your warranty if "Using the > > vehicle as a stationary power source". (See: > > > > > https://digitalassets.tesla.com/tesla-contents/image/upload/tesla-new-vehicle-limited-warranty-en-us.pdf > > ) > > > > I decided to see if they modified the warranty for the Cybertruck, since > it > > has the AC power export feature built-in, and here's what they changed > that > > clause to: (only for Cybertruck) "Using the vehicle as a permanent, > > stationary or long-term power source or backup". So Technically any > > "stationary" use still voids it! They also don't bother to define what > > "long-term" is. (See: > > > > > https://digitalassets.tesla.com/tesla-contents/image/upload/tesla-cybertruck-new-vehicle-limited-warranty-en-us.pdf > > ) > > > > I'm not a lawyer, but I don't think they can void your warranty unless > they > > can prove your actions did the damage you are claiming under warranty > > coverage. (Per the Magnuson Moss Warranty Act, see: > > > > > https://www.ftc.gov/legal-library/browse/statutes/magnuson-moss-warranty-federal-trade-commission-improvements-act > > ) > > Though that probably means they tell you to kick rocks and you have to > > hire an attorney to fight them. I'd be interested in opinions from any > > Attorneys on the list? > > -------------- next part -------------- > > An HTML attachment was scrubbed... > > URL: < > > > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20240628/e3cf1c06/attachment.htm > > > > > _______________________________________________ > > Address messages to ev@lists.evdl.org > > No other addresses in TO and CC fields > > HELP: http://www.evdl.org/help/ > > > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20240628/e376d9be/attachment.htm > > > _______________________________________________ > Address messages to ev@lists.evdl.org > No other addresses in TO and CC fields > HELP: http://www.evdl.org/help/ > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20240628/e7fed405/attachment.htm> _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields HELP: http://www.evdl.org/help/
