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I had a Gen 2 for my Model 3 and bought a Gen 3 for my new Model S but my electrician told me they couldn't load balance. He said I either needed 2 Gen 2's which communicate via a wire or 2 Gen 3's which communicate over WiFi. Not having backwards compatibility on the Gen 3 seems like an unimaginable oversight. Does anyone know of a way to get them to load balance so I don't have to plug the cars in on alternate days?