Review of LG Chem Solar Lithium ion batteries
Since its establishment in 1947, LG Chem has continuously achieved growth through endless challenges and innovations as Korea’s leading chemical company.
From the durable cosmetic product lids to the top-notch batteries of unprecedented quality, LG Chem has turned dreams into reality to enrich the lives of our customers and humankind for the past 70 years.
Now, LG Chem will again endeavor to become a ‘Global Top 5 Chemical Company’ with a balanced business portfolio that has a competitive advantage across the globe, including business divisions in petrochemicals, advanced materials, life sciences, and a subsidiary specializing in batteries.
“We connect science to life for a better future.”
LG Chem will become a world-class corporation that creates new value for our customers based on “science,” beyond “chemistry.”
LG chem is ranked as one of the world’s largest lithium-ion battery manufacturers with 29,000 employees and manufacturing facilities in South Korea, China and the US. The company supplies a diverse range of energy storage products for many industries including electric vehicles, portable electronics (mobile phones) and stationary applications. The large range of stationary lithium battery systems has positioned the company as one of the industry leaders in home solar battery systems and larger commercial energy storage (ESS) installations.
The following are the solar lithium ion batteries.
The RESU or ‘Residential Energy Storage Unit’ range consists of both 48 volt and higher voltage 400 volt lithium-ion battery options. The 48V (LV) series is available in 3.3kWh, 6.5kWh, 9.8kWh and 13kWh. The total available capacity (kWh), however usable capacity is limited to 90%
The new Gen-3 10kWh and 16kWh high-voltage ‘Prime’ batteries are due to be released in mid 2021.
A maximum size of 19.6kWh can be achieved by linking two of the 9.8kWh (RESU10) battery units together using the LG RESU plus battery combiner unit – the RESU plus.
Commercial (400V)
Currently, RESU7H is available with a capacity of 6.6kWh.
The total available capacity (kWh), however usable capacity is limited to 95%.
Since the release of the first Tesla Powerwall, there has been an emerging trend towards higher voltage 300 – 400 Volt battery systems. These have several benefits over the traditional ELV 48V batteries including, increased efficiency, lower cable losses and the ability to be DC coupled with the solar array which operates at a similar voltage. However, all dedicated off-grid battery inverters operate within the traditional 48V range so the higher voltage batteries will generally not work for off-grid installations.
LG Chem has announced two more model, RESU10H and RESU16H to be launched in mid 2021.
All LG Chem RESU batteries are IP55 weather-rated. This means they can be installed in a semi-outdoor location such as a verandah or carport, but should not be located in a position exposed to direct sunlight, especially during the warmer months. As with any electrical/battery system, excessive prolonged heat is detrimental to the performance and life of the system.