As the LG battery ages so does its capacity go down, the harder and deeper the cycling the faster the downward trend in capacity Jerry NAPCEP PV Inspector
On Sat, Oct 23, 2021, 11:53 AM Jon Siegenthaler <jon.siegentha...@gmail.com> wrote: > Hey Wrenches, > > I have a site with an LG Chem 9.8kW battery. This is coupled with the > Solaredge Energy Hub. According to the data sheet the battery is listed as > a 9.8kWh battery and has a usable capacity of 9.3kWh. > > On the Solaredge portal for the customer I can download the CSV file for > the system production and consumption as well as the battery discharge. > When I add up the kWh on average the battery will feed between 6.6-6.8kWh > at a DOD of 85-84%. The elevation of the installation is 500ft above sea > level, the battery is installed in the laundry room in the house where the > highest temperature is 85°F. > > I had spoken to a Solaredge tech about the remaining 15% of the battery > and if the client could use this portion. He had said that 5% was reserved > for the inverter to keep operating and 10% was for the battery to stay > awake/alive. Even with this added 15% as the "reserve" we're seeing nowhere > near the supposed 7.9kWh. We seem to be missing around 1.3kWh of storage. > > On another site I have already had one battery internally explode back in > July that wasn't on the recall list and am supposed to get the replacement > in Q1 of 2022. Needless to say I'm less than impressed by LG and their > under performance. Is anyone else experiencing anything similar with the > storage capacity? > > Jon > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > >
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