LG Chem solar batteries reviews

Based on 92 ratings Aus Ranking

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About LG Chem, Solar Batteries

LG Chem solar batteries review

LG Chem (nowadays known as LG Energy Solution) have been in the battery business for a very long time - so they know a thing or two about whacking together, err, carefully crafting battery systems. The company began mass production of Korea's first lithium-ion batteries way back in 1999 and by the end of 2011, it was the world's third-largest manufacturer.

While LG somewhat lacks the glitz and glamour of Tesla, it's been a quiet achiever on the Australian home energy storage front and its solar batteries have been quite popular here.

Its flagship products are the LG Chem RESU range of solar battery systems, with current models ranging in capacity from 6.5kWh to 13kWh - but there's also the Prime RESU available in 16kWh capacity. It's important to note that whatever model you get (aside from the Prime 16H), the capacity noted is nominal. Useable capacity will be lower - for example, the LG RESU 13 has a nominal capacity of 13.1kWh and a useable capacity of 12.4kWh.

The power rating ranges from 4.2kW steady, 4.6kW peak (for 3 seconds) for the RESU 6.5 to 5kW steady, 7kW peak (3 seconds) for the RESU 13, so it has a fair bit of grunt.

For more specifications on various models, check out our battery storage comparison table.

Just a note on LG Chem vs. LG Energy Solution - back in late 2020 LG Energy Solution came into being and the “Chem” word has since been dropped from battery names.

LG RESU Pros And Cons

Among the benefits of the LG RESU batteries is it can be used in both off-grid and hybrid setups. It's also a compact battery thanks to the use of lithium nickel manganese cobalt oxide (NMC) technology, but NMC tends to have a shorter cycle life and degrades more rapidly than chemistries such as Lithium Iron Phosphate (LiFePO4). 

One of the drawbacks of the battery is it is warranted to 45ºC ambient temperature - but this is only problematic in some parts of Australia (although "some" is growing due to climate change impacts).

While on the topic of weather, these batteries are IP55 rated, so they can be installed outdoors as well as indoors.

LG Battery Recall

LG batteries haven't been without issues. In early 2021, LG Energy Solution Australia launched a recall for various LG Chem RESU models and battery packs with cells from specific production lots. That recall is still active, with thousands of batteries still believed to be operating without the required fixes as at late May 2022 according to the Australian Competition and Consumer Commission.

IMPORTANT: Affected LG battery packs were also installed in some battery systems from other brands, including:

  • Redback SH5000
  • Red Earth Sunrise
  • Red Earth Drop Bear
  • SolaX Power X-cabinet and PowerStation
  • Opal Storage
  • Eguana Evolve
  • VARTA Pulse Neo

If you know of someone with an LG battery or one of the other brands above, please let them know about this recall.

LG Chem RESU Warranty

As with most good quality home energy storage systems these days, the LG Chem Resu has a 10 year warranty. While a manufacturer warranty is only good if the company is around to honour it, Australian Consumer Law comes into play - and the chances of LG going under aren't particularly high. They've been around a long time and there's nothing to indicate that won't continue; however the situation with the recall is unsettling.

The company warrants its batteries will retain at least 60% of storage capacity for either 10 years after the date of the initial installation or for a minimum energy throughput that varies according to model - whichever comes first.

With a solid history in battery manufacturing and still a solid company today, LG Chem may be worth considering if you have your heart set on acquiring a solar battery system; but the recall has taken some gloss off the brand.

If you're one of the many Australian LG RESU owners, others considering a purchase would be curious about your experience - leave a rating and review.

LG Chem Solar Battery Reviews

Battery is decaying some what in capacity over the past 12 months, but unsure if that’s normal
Bought From: Stored Solar
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9.6kw battery, looked to add a second one but LG pricing not cost effective to do that, battery good 9 months of year covers overnight load winter not big enough to cover multiple cloudy days
Bought From: Stored Solar
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Bought From: Beyond Solar Sydney Show additional information
Bought From: RESINC Solar Show additional information
Bought From: Sunrise Power Solutions Show additional information
Bought From: Jet Solar Melbourne GC Show additional information
Bought From: Inspire Energy Show additional information
runs out fiarly quickly, still have large power bill even with $20k system and battery
Bought From: Skylight Energy
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Works great
Bought From: Sapphire Solar
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Our original RESU13 battery one year old battery was only compatible with another RESU13 battery. In it's wisdom LG Chem discontinued the RESU 13 leaving customers with an orphan product which could not be expanded. We now have two RESU12 batteries in parallel. The RESU12 has almost identical storage capacity as the previous discontinued RESU13.
Bought From: Sunrise Power Solutions
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It’s so amazing. It runs the whole house at night and recharges even on poor days with hours.
Cannot fault it. I am converting to all electric by December and will buy an Enphase 10kW as well to connect to my separate Enphase system of 6.6kW panels. I might have essential circuits backed up to the new battery like fridge, internet, tv, in case our supplier has issues.
Bought From: Amrut Solar
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Bought From: Variety Solar Pty Ltd Show additional information
Bought From: G-Store Show additional information
Bought From: G-Store Show additional information
Bought From: Sapphire Solar Show additional information
Bought From: Sapphire Solar Show additional information
Resu 12 battery powers my whole home all night with myself and my wife and 3 adult kids all with multiple devices up late and has not dropped below 40%
Bought From: Unified Energy Services
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Covering our nightly usage so far. Even running the air con.
Bought From: SolarWide Pty Ltd
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Bought From: Clipsal Solar Sydney Show additional information
Bought From: ALS Engineering Pty Ltd Show additional information
The LG Chem battery has been working well since it was installed however, we did receive an email from LG advising that our battery was subject to a recall. We were advised that, as a safety precaution, LG would be replacing our battery free of charge and that the warranty period would restart once the new battery had been installed. LG said that we should anticipate the battery being replaced during October 2021 and ,as a further safety precaution, they had remotely reduced our existing batteries capacity to 75% until the replacement battery had been installed. To date (1 November 2021) LG has not replaced our existing battery but, our system including the existing battery has been working without fault. Also, despite LG's claim that they had reduced our battery capacity to 75% we have not seen any increase to our electricity bills. So, we are still satisfied with the overall performance of our solar system.
Bought From: Home and Energy Sunshine Coast
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Bought From: Cove Technologies Pty Ltd Show additional information
Bought From: My Energy Engineering Grid Connect Show additional information
Bought From: Lightning Energy Melbourne Show additional information
Bought From: Home and Energy Sunshine Coast Show additional information
Bought From: Smooth Current Electrical Pty Ltd Show additional information
Bought From: Sunwise Energy PV Show additional information
Bought From: Ultimate Solar Energy Show additional information
Bought From: Smart Energy Answers ACT Show additional information
Operating as advised.
Bought From: Hielscher Electrical and Communications Pty Ltd
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Bought From: Solahart Hobart Show additional information
Bought From: Generate Energy Show additional information
I have two LG RESU10H batteries, one on each inverter. They are rated at 10kWh each with 9.3 kWh useable. The system protects the battery by not discharging below 20%. Generally the batteries charge up by around 11am and discharge after the sun goes down. They often last through till 10 or 11pm before we start using grid power. Data shows they are providing at least 17kWh per day (except on really cloudy days).

On days that are partly cloudy, they can fully charge, then discharge partially during the day and then recharge again. This means they can provide more energy for use - just yesterday battery energy used was 25 kWh due to this multiple charging in one day.
Bought From: All Green Environmental Solutions
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Resu 10 battery. during witer this does not quite get us through the night. Same in summer with aircon going. So considering another battery.
Bought From: Sunwise Energy PV
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Bought From: Skyline Solar Show additional information
Quite disappointed in the lack of monitoring capability of the device, which is only through the inverters software. a imbedded adhoc WIFI or the ability to connect to your WIFI system to provide cell level monitoring etc. would be great. i also need to find the recommended battery discharge level recommended of the battery as the inverter is set to 20% discharge. But would like to confirm with the battery manufacturer if this is inbuilt in the BMS system in the battery hence the inverter setting of 20% would not apply as this would be taken into account within the LG battery itself.
Bought From: Clipsal Solar Sydney
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Bought From: SolarWide Pty Ltd Show additional information
Bought From: Smooth Current Electrical Pty Ltd Show additional information
Bought From: EOC Energy VIC Show additional information
The Best!
Bought From: DQ Electrical
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Bought From: PTE Solar and Electrical Pty Ltd Show additional information
Bought From: Lokic Energy Solutions Sydney Show additional information
Bought From: More Green Energy Show additional information
Bought From: Macdonald Air and Electrical Show additional information
Bought From: Apex Energy Australia Show additional information
Bought From: Apex Energy Australia Show additional information
Bought From: Apex Energy Australia Show additional information
Bought From: Sunrise Power Solutions Show additional information
Bought From: Tindo Solar Show additional information
For it’s size (9.8kw)it packs quite the punch, safely runs our home of 4 bedrooms, 2 bathrooms with no problems. Would highly recommend it.
Bought From: Hush Energy
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