i can"t answer your question about availability but I believe you are comparing apples to oranges. The Tesla Powerwall is a self contained battery and inverter that can AC couple to almost any recently installed PV solar system.
The LG Chem is just a battery that would need a compatable inverter that can DC couple to the Resu 16H. The Resu 16H operates at 400 volts. My apologies if you already know that.
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When will LG Chem RESU 16h batteries be available?
I am considering adding 1-2 LG Chem RESU 16h batteries to my home with 17.6 kWAC solar system. My home is on the Big Island in Hawaii, where Tesla PW2's (13.5 kWh usable) run $12-14k each. Online sellers list LG Chem RESU 16h (16 kWh usable) at $8-9k however the estimated availability has been extended originally from Dec 2020 to now Sept 30, 2021. Does anyone know if the Sept 2021 availability estimate is likely or just another guess?
I read that LG Chem is doing some battery recalls, which is probably consuming battery cells that would otherwise be available for their new RESU 16h.
I don't think that two LG Chem RESU 10h (9.8 kWh usable) will be enough.
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