LG Chem| Battery Storage

    LG Chem battery storage from Cymru Solar a leader home energy storage in Wales.

    How does LG Chem's RESU battery pack measure up against all the other home energy storage options? Read on to learn more about the LG Chem solar battery’s cost, technology, and warranty coverage.

    What is the LG Chem RESU?

    LG’s lithium ion RESU battery is a home energy storage solution that can be paired with a solar panel system. According to the company, the RESU  can be used both to maximize consumption of solar energy at home, rather than sending it back to the grid, and also functions as a source of backup power in the event that the grid goes down. However, while the RESU has some backup power capabilities, it isn’t designed for off-grid use.

    The LG Chem RESU comes in a range of sizes from 2.9 kilowatt-hours (kWh) to 12.4 kWh. The only LG battery currently for sale in the UK. is the RESU10H, which has a usable capacity of 9.3 kWh.

    How the LG Chem solar battery works

    The LG RESU is an ideal pairing for solar panel systems, especially if your utility has reduced or no net metering, time-of-use rates, or demand charges. Installing a solar storage solution like the RESU allows you to maintain a sustained power supply during the day or night.

    lg chem solar battery storage in wales from cymru solar installations

    As with other home energy storage products, the LG Chem battery pack is sized for day-to-day use at your home, and is usually paired with a home solar panel system. When your solar panels produce more electricity than you can use in your home, the excess is stored in the battery pack instead of being sent back into the electric grid. Later, when your panels aren’t producing enough electricity, you can use the electricity stored in your LG solar battery instead of having to buy it from your utility.

    Normally, this process happens over the course of a day: when the sun is high in the sky and your solar panels are producing more electricity than you can use, the surplus energy is stored in your battery. As the sun goes down and your solar panel production decreases, you draw on the electricity that you stored during the sunniest part of the day. Essentially, home batteries like the one manufactured by LG help you balance out your electricity production and usage over the course of the day.

    Can you go "off the grid" with an LG Chem RESU and solar?

    Installing a solar-plus-storage system at your home is a great way to take control of your electricity bill, but it doesn’t mean that you’re completely disconnected from your utility. Going "off the grid" with solar batteries is actually a more expensive and complicated proposition than you might think. A single LG home battery will only provide backup power for a few hours – not nearly enough to cover you if you have an entirely cloudy day, let alone several days or weeks of inclement weather.

    What is LG's battery warranty, and how long does the battery last?

    In most cases, homes with an LG Chem home battery will charge and drain the battery every day. The RESU10H comes with a 10-year warranty that assumes your battery is used for daily charging and draining. During that time, if the battery malfunctions or loses more than 40 percent of its storage capacity, it is eligible for replacement under LG’s battery warranty.

    LG’s lithium ion battery technology is similar to other rechargeable batteries both large and small: as time goes on, the battery loses some of its ability to hold a charge. Think of how the battery life of a brand-new smartphone compares to one that is a few years old. As you continually charge and drain your phone’s battery, it starts to lose some of its ability to hold a charge.

    The battery life of your RESU battery will deteriorate in the same way. That isn’t an indicator of a product flaw – all batteries lose some of their ability to hold a charge over time, whether it’s an electric vehicle battery, a home energy battery, or a rechargeable AA battery. LG’s guarantee that the battery will retain at least 60 percent of its capacity over the course of the warranty shows that the company stands by its product more than other solar battery manufacturers (such as Tesla and Sonnen) that don’t have a warranty related to storage capacity.

    Should you install an LG Chem RESU or other solar battery?

    Solar batteries are a fairly new technology for homeowners. While they offer significant benefits for some, they aren’t always a necessary investment. If your utility offers net metering, installing a solar battery won’t save you money. However, if you install a solar panel system in an area with time-of-use (TOU) electricity rates, no net metering, or significant demand charges, a solar battery could be a good choice for you.

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