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Hi, @Ingineer, are you still trying to do this? I'm very interested!I've got an Inverter in development that can perform this function. The prototype can put out up to 3kW peak and around half that continuously. It provides a pure sine wave, and runs directly of the high-voltage battery. It also has greater than 95% conversion efficiency and is very small.
If there is enough interest, I will do a production run. It's very useful for powering in-car devices on trips, such as laptops, and could be used in an emergency for running critical appliances. I would think if you only used it in emergency, Tesla wouldn't care. (IANAL!) They probably have language in the warranty to prevent people from deep cycling the pack in a non-car application and claiming warranty when it dies young. Since it's obvious when it's used extensively (makes the watt-hour per mile figure go up), it would be easy for them to tell what abuse is. After all, Nissan even sells a LEAF to Home kit in Japan that does the same. Also, it's essentially no different than sitting in the car and running the HVAC without driving. (In fact, the car really can't tell the difference)
Running a 12v to 120v inverter is very inefficient, as there would be double conversion (triple, actually), and 12V inverters are not very efficient to begin with. Plus, you can only pull a limited amount of current from the 12v system without overloading it, whereas pulling a few kW from the high-voltage system is nothing.
I've got an Inverter in development that can perform this function. The prototype can put out up to 3kW peak and around half that continuously. It provides a pure sine wave, and runs directly of the high-voltage battery. It also has greater than 95% conversion efficiency and is very small.
If there is enough interest, I will do a production run. It's very useful for powering in-car devices on trips, such as laptops, and could be used in an emergency for running critical appliances. I would think if you only used it in emergency, Tesla wouldn't care. (IANAL!) They probably have language in the warranty to prevent people from deep cycling the pack in a non-car application and claiming warranty when it dies young. Since it's obvious when it's used extensively (makes the watt-hour per mile figure go up), it would be easy for them to tell what abuse is. After all, Nissan even sells a LEAF to Home kit in Japan that does the same. Also, it's essentially no different than sitting in the car and running the HVAC without driving. (In fact, the car really can't tell the difference)
Running a 12v to 120v inverter is very inefficient, as there would be double conversion (triple, actually), and 12V inverters are not very efficient to begin with. Plus, you can only pull a limited amount of current from the 12v system without overloading it, whereas pulling a few kW from the high-voltage system is nothing.
Any idea yet on how much you think this unit will cost ?Yes, development is still ongoing. Having trouble sourcing the high-voltage connectors used by Tesla made by KET. The connectors are essential to make installation safe and easy.
Yes, development is still ongoing. Having trouble sourcing the high-voltage connectors used by Tesla made by KET. The connectors are essential to make installation safe and easy.