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I'm planning on building a solar system that outputs ~2100 W peak to charge my car completely off grid. I drive a stock Tesla Model 3 LR and I don't plan on modifying the car, so I will likely use the default Universal Mobile Connector to charge off AC (EU schuko connector, 230V).
I'm a total beginner to DIY but I've been reading a bit, and as far as I understand, the solar would have to charge an intermediary battery first, and then that battery can output power to charge the car. As far as I can tell, the Tesla charger is limited to 5 A minimum at 230 V, so the battery and inverter would need to be able to carry at least 1150 W sustained.
The solar also outputs 2100 W peak, so I assume the intermediary battery would need to be able to handle that kind of input.
I initially looked at getting something off the shelf like a Jackery 1500 battery, but that is limited to 600W input from solar (I'm assuming the size of the battery is what limits the input?)
My questions boil down to;

I'm a total beginner to DIY but I've been reading a bit, and as far as I understand, the solar would have to charge an intermediary battery first, and then that battery can output power to charge the car. As far as I can tell, the Tesla charger is limited to 5 A minimum at 230 V, so the battery and inverter would need to be able to carry at least 1150 W sustained.
The solar also outputs 2100 W peak, so I assume the intermediary battery would need to be able to handle that kind of input.
I initially looked at getting something off the shelf like a Jackery 1500 battery, but that is limited to 600W input from solar (I'm assuming the size of the battery is what limits the input?)
My questions boil down to;
- How large would the intermediary battery need to be?
- What voltage should a system like this run on?
- Do I need any other parts other than solar controller, battery, inverter?
- Is there any off the shelf system that could handle this, either partially or completely (and that is not outrageously overpowered or expensive!)