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LG Solar Battery: The RESU Batteries Review & Insights

LG Solar Battery
Source: LG

The LG RESU battery is heavily disrupting the home battery market at the moment, and why is that? Well, LG's RESU series is a synergy of unparalleled efficiency and enduring reliability, all tailored to fit your budget. Since venturing into energy storage in 2018, LG has applied over 60 years of electronics prowess to redefine residential power. The RESU batteries, designed for smooth integration, offer dependable backup and smart energy management for your solar setup. 

With the introduction of the third-generation 'Prime' series in late 2020, LG continued to push the boundaries, offering one of the most sought-after Tesla Powerwall alternatives. But it's not just about what these batteries can do; it's about the vision behind them. LG's recent shift from solar modules to focus on Energy Storage Systems (ESS) and other innovative solutions marks a new era of sustainability. 

We endorse the LG RESU Prime battery as a superior, economical choice, particularly suited for new solar installations due to its specific integration with DC power side hybrid solar inverters. Let's explore why it's our top choice and how it could be the ideal fit for your home.


Key Highlights

  • Unrivaled Popularity: LG Chem RESU stands out as a top choice in home batteries, trusted by homeowners globally.

  • 2021 Upgrades: The latest RESU 10H and 16H Prime models boast enhanced performance, promising over a decade of reliable whole-home backup.

  • Flexible Capacity: With options ranging from 10 to 16 kWh, LG RESU batteries cater to a significant portion of your daily energy needs.

  • Incentive Eligible: Pairing your LG battery with a solar installation unlocks federal tax credits and potential state incentives, making it a smart financial move.


How LG Solar Batteries Work

LG RESU batteries are directly connected to your solar inverter, capturing and converting the sun's rays into direct current (DC) power during the day. This energy is then meticulously stored, ready to power your home as the evening draws in.

But what really sets LG's batteries apart? It's their impressive capacity. Depending on which model you choose, these batteries can store anywhere from 9.6 to 16 kilowatt-hours (kWh) of electricity. To put that into perspective, the RESU 10H Prime can comfortably power an average household through the night. And for those needing a bit more juice, the RESU16H Prime steps up to the plate.

Yet, it's not just about storing power. It's about doing so efficiently and reliably. LG batteries are designed to work seamlessly with a variety of solar inverters, from the popular SMA Sunny Boy Storage inverters to those from Fronius, and SolarEdge StorEdge. This means that no matter your current setup, there's likely an LG battery that's compatible.

And for those moments when the grid falters, LG batteries are ready. They're designed to retain a portion of their stored energy, ensuring that even during outages, your home remains powered.

The newer models, the LG Chem RESU 10H Prime and 16H Prime, take versatility to the next level. Compatible with an even broader range of inverters, they're about giving you options and ensuring that your transition to solar is as smooth and efficient as possible.

LG RESU Battery Models

LG Solar Battery

Let's simplify it. From the compact RESU6.5 to the robust RESU16H Prime, LG offers a diverse range to suit every home's energy needs. But what's the real scoop on these models?

Take the RESU 10H, for instance—once the sole option with a 9.8 kWh capacity. Fast forward to 2021, and LG introduces the RESU Prime series, a game-changer with models like the 10H and 16H, boasting capacities of 9.6 kWh and a whopping 16 kWh, respectively.

But here's something you should know—each model is designed with specific inverters in mind. The 10H-C and 10H-R cater to different brands, ensuring seamless integration. The Prime models? They're even more versatile, compatible with major brands like SMA and SolarEdge.

And power? The RESU 10H and 10H Prime pack a continuous 5 kW punch, with a peak of 7 kW. The 16H Prime? It ramps up to 7 kW continuous and 11 kW peak. Need more power? They're scalable, meaning you can link up batteries for an even mightier energy reserve.

Remember, all RESU models are DC-coupled for enhanced efficiency. So, ready to find your perfect LG RESU match? Let's check the table below and discover the model that'll better suit your home.

LG Solar Batteries: Warranty and Cost

LG Solar Battery

One thing you should know about solar battery prices is that they aren’t one-size-fits-all. They fluctuate based on where you're located and who's doing the installation. Installers get these batteries wholesale, so what you end up paying is shaped by their location, size, and experience.

Now, for the numbers game. Market research suggests that LG's 10H models typically set you back around $9,000, potentially stretching up to $12,000 with installation. Eyeing the larger 16 kWh model? You're looking at about $10,000, possibly reaching $16,000 once installed. That boils down to roughly $900 - 1,100 per kWh of storage capacity. Sure, some newer brands might sneak in under $800 per kWh, but here's the thing—LG's reputation for quality and reliability often tips the scales in its favor.

So, with LG's comprehensive warranty as your safety net and potential incentives to ease the financial load, isn't it time to consider how an LG Solar Battery could be a smart investment for your home? Reach out for a personalized quote, and let's chat about making solar energy work for you.

LG RESU vs Other Top Competitors

Pitting LG RESU against other top solar batteries, how does it really fare? Let's dissect this. Like its peers, LG RESU is designed to harness solar power by day to light up your nights and keep you powered during outages. But here's where it gets interesting...

  • Designed for Durability: LG batteries are built to last. On average, the LG Chem RESU 10H systems can charge and discharge daily for 10 years, retaining 60% of their original capacity. The RESU Prime models go even further, preserving 70% capacity after a decade.

  • Compact and Lightweight: LG's advanced manufacturing process results in batteries that are more compact and lighter than many alternatives, making installation and space management a breeze.

  • DC-Coupled Efficiency: Unlike some batteries that require power conversion, LG's RESU batteries are DC-coupled, meaning they charge directly from solar panels. This direct route is more efficient, ensuring more of the sun's energy is stored for your use.

  • High Discharge Capacity: LG batteries allow you to use up to 95% of their capacity, providing a reliable and robust power source when you need it most.

  • Scalability for Greater Needs: Need more power? No problem. LG batteries can be scaled by connecting two units, boosting your storage capacity up to 32 kWh.

  • Superior Round-Trip Efficiency: The RESU 10H shines with a 94.5% round-trip efficiency, meaning it delivers 9.45 kWh for every 10 kWh stored, surpassing many competitors in the market.

  • Easy Installation and Servicing: LG RESU Prime batteries are designed for easy installation and servicing. They can communicate with the installer for troubleshooting, reducing the need for service calls.

  • Broad Compatibility: LG batteries are compatible with various brands of solar inverters, including SMA, Fronius, Huawei, and SolarEdge StorEdge, ensuring they fit seamlessly into your existing solar setup.

  • 10-Year Warranty: LG stands behind its products with a solid 10-year warranty, giving you peace of mind and assurance in your investment.

When considering LG RESU against other top residential solar batteries, these points highlight why LG might just be the best choice for your specific energy needs. 

Is LG Solar Battery Right For You?

Every home is as unique as its inhabitants, and your energy needs are no different. Consider this—how much energy do you consume? What are your long-term sustainability goals? LG's batteries aren't just about trimming your electricity bills, though they can help during peak pricing. They're about providing reliable, whole-home backup power, especially during unexpected blackouts.

Sure, they might not be the cheapest on the block, but what's the price of reliability and peace of mind? LG's reputation for durability and their commitment to service are unmatched. Plus, their sleek, compact design means no more bulky eyesores. Just a smooth, efficient power source that fits right into your life.

Curious if LG is the right fit for your home's energy needs? If you're pondering a shift towards a more sustainable lifestyle, we're here to guide you through it. Discussing your options could be the first step to a more empowered, eco-friendly home. 


How long does an LG solar battery last?

LG solar batteries typically last for about 10 years. Their lifespan can extend or shorten based on usage, maintenance, and environmental conditions.

What is the warranty on LG solar batteries?

How often do solar batteries need to be replaced?

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1 Comment

May 25

I have two 16kv batteries on my system, each hooked up to a solar edge inverter. After 6 months the number one battery malfunctioned and would trip the breaker. The unit was replaced (took about a month). After 14 more months the number one battery malfunctioned in the same way, it will trip the breaker after trying to boot. I am guessing the charge controller integrated into the system is not robust. I feel like I can’t be the only person having this problem and am worried that this will be ongoing until the 10 years is up, then I’ll have boat anchors. I would appreciate learning more about what is causing this, and finding a better solution to repair…


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