Q: What are the charging limitations/your recommendations regarding using Li in environments where it gets below freezing?

A: Do not install lithium batteries where they might get below freezing. They do have enough mass that a frosty night will not get them too cold, so long as it is warmer during the day.

Q: Can you run a Lynk LiPO4 battery bank in parallel with a lead acid battery bank?

A: Definitely not. I’ve thought that there could possibly be a justification for an inverter that could switch between the two, but I am not holding my breath to see one made. The lithium battery is for daily cycling and the lead battery is for backup only. I run two separate inverter systems and circuits to do so, but that is probably not applicable to many jobs.

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Q: Does Outback Power publish max array size numbers for the FM100 for 24 and 48 volt systems?
A: 3000 W for 24 volt systems, and 6000 W for 48 volt systems. That is if the ambient temperature is 25°C or less. At warmer temperatures it will derate.

Q: Skybox – is this really a DC-coupled or AC-coupled solution? The Radian does this exact same setup in a DC-coupled configuration.
A: DC coupled, higher voltage than the charge controls that need to be used with the Radian. The PV input is built into the inverter, not in separate charge controls. They may make it capable of AC coupling also in the future.

Q: Would you say the Outback Power Skybox is the best solution for customers wanting solar grid-tied now, with the option to add battery backup at a future date?
A: The Skybox or the StorEdge inverter are the choices; It will depend on details which one is best for any specific job. The StorEdge and LG combo will usually be less expensive and more efficient for grid tie. The SkyBox will use a wide variety and sizes of 48 volt batteries, and has generator input.

Q: What lithium chemistry is exactly the Discover battery? Iron Phosphate?
A: Lithium iron phosphate, LiFePO4, LFP

Q: Is there a recommended limit on the number of Discover AES batteries that can be run in parallel?
A: They are saying that up to 20 should not be a problem. So far I think they have tested up to 16 units.

Q: Can I use the Discover battery with an XW 6048 older inverter?
A: Yes, certainly. It might be worth while to update the Firmware, but even without closed loop communications they will work as a replacement battery.

Q: Will the Discovery batteries communicate with Outback products currently out, or coming out?
A: It is expected that the Discover Lynk will have an interface card for the Skybox, but not for the legacy inverters like FXR or Radian. They will still work with those inverters, the set points just need to be slightly more conservative. The Lynk gateway will give monitoring of the battery bank separately.

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About LG Chem

Having continued to grow over 7 decades since founded in 1947, LG Chem is leading the chemical industry in Korea. The company has built a global network for production, sales and R&D not only in Korea but also in main bases across the world and has provided globally competitive products including ABS, polarizers and EV battery cells, raising its global position as a material supplier.

The company has strengthened market dominance starting from the Basic Materials & Chemicals business to Energy Solution, IT and Electronic Materials and has expanded its business into Life Science area, building a future-oriented business portfolio. In the long term, the company will build the foundation for sustainable growth by selecting and concentrating on the ‘energy’, ‘water’ and ‘bio’ businesses as the new growth engines.

LG Chem is committed to becoming a global company that realizes the vision of “growing with customers by providing innovative materials and solutions” and provides new values to customers.

LG Chem’s ESS battery applies the Lamination & Stacking technology to create high energy density and achieved compactness. It maintains stable structure against frequent charging/discharging, with superior lifespan compared to its competitors.