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When will LG Chem RESU 16h batteries be available?

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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.

  • #2
    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.
    Last edited by Ampster; 07-18-2021, 01:08 AM.
    9 kW solar. Driving EVs since 2012

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    • #3
      Good point about apples & oranges. I currently have 2 Solaredge HD Wave inverters, SE10000 & SE7600 with built in EV charger. I am thinking about replacing the older SE7600 with new SE7600 energy hub inverter & adding SE backup interface so that I can add storage battery, islanding & power my backup circuit.

      The advantage to using LG Chem RESU batteries are ability to do DC-DC coupling (2-3% more efficient) and charging them from DC side of inverter. The latter will let me add more pv panels and produce more power without having to ask my utility to allow me to increase my export limit of 17.6 kW. Alternately, I may not add more panels but instead switch to TOU. TOU would give me less expensive grid power to charge my battery with on cloudy days and a cheaper source of grid power when my consumption is much greater than my production. My consumption is much greater when my home is being rented (6 mo/yr) than when I occupy it.

      Can I charge PW 2 from grid with latest software? Here is one answer that I found online at tesla.com, "When Powerwall is installed without solar, it can charge from the grid if in Backup-only or Time-Based Control to support you during grid outages and to help you save money on your electricity bill. When Powerwall is installed with solar, it will not be able to charge from the grid."

      I have another home with a SE6000 inverter that I would replace with the older SE7600 inverter mentioned above. Then, I would try to sell SE6000 on Craigslist.
      Last edited by Steeler.Fan; 07-18-2021, 02:17 AM.

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      • #4
        Originally posted by Steeler.Fan View Post
        .....
        I am thinking about replacing the older SE7600 with new SE7600 energy hub inverter & adding SE backup interface so that I can add storage battery, islanding & power my backup circuit.
        Check your assumptions. I thought the Resu16H only worked with the Solaredge Storedge inverters. Last I heard the backup interface was not yet available in the USA. My information is six months to a year old.
        The advantage to using LG Chem RESU batteries are ability to do DC-DC coupling (2-3% more efficient) and charging them from DC side of inverter. The latter will let me add more pv panels and produce more power without having to ask my utility to allow me to increase my export limit of 17.6 kW. Alternately, I may not add more panels but instead switch to TOU. TOU would give me less expensive grid power to charge my battery with on cloudy days and a cheaper source of grid power when my consumption is much greater than my production. My consumption is much greater when my home is being rented (6 mo/yr) than when I occupy it.
        Makes sense
        Can I charge PW 2 from grid with latest software? Here is one answer that I found online at tesla.com, "When Powerwall is installed without solar, it can charge from the grid if in Backup-only or Time-Based Control to support you during grid outages and to help you save money on your electricity bill. When Powerwall is installed with solar, it will not be able to charge from the grid."
        I have not heard of anyone being able to convince Tesla to allow charging from the grid when there is solar connected to the Powerwalls. The Tesla Motors Club Forum would be your best source for workarounds if any.
        If that is an important issue then the Solaredge would give you greater flexibility

        9 kW solar. Driving EVs since 2012

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        • #5
          ecodirect.com is sell SolarEdge StorEdge BI-NUSGN-01 > Backup Interface for Energy Hub HD-Wave Inverter with with main lugs - For Partial Home Backup (breaker not included) for around $1400.

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          • #6
            Ecodirect. is a known reputable supplier. I bought my first Ouback Radian from them in 2015 and this week will pickup 23 solar panels at their warehouse in Sacramento.
            9 kW solar. Driving EVs since 2012

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