Lithium Batteries For Solar Systems

Reliable, Long-Lasting Solar Power—Day and Night

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Power for a Sustainable Lifestyle

The idea of living off-grid is appealing to many—it means living every single day in the fresh air and a more sustainable way of life- putting less strain on the environment. When you're self-reliant, battery anxiety is the last thing you need to worry about. That's why many of those that seek an off-grid lifestyle choose reliable, long-lasting lithium batteries for a worry-free energy storage system.

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Lithium Benefits for Renewable Energy

Power your home or business with reliable, around-the-clock energy. RELiON lithium batteries maximize your solar system’s efficiency, delivering clean, long-lasting power—even in extreme conditions.

Partial State of Charge Tolerant

Partial state of charge, known as PSOC, which is a killer of lead-acid batteries, does not affect performance or battery life of a lithium battery. Sometimes batteries don’t get fully charged, or they regularly operate in a partial state of charge. Either way, you can count on RELiON lithium batteries living a long and productive life.

More Usable Capacity

Lead-acid batteries are typically sized up to two times your energy needs to account for extended periods without sun and less usable energy with higher rates of discharge. Plus, you are typically cautioned to limit your use to 50% of the rated capacity, as using more can significantly reduce performance. Lithium batteries provide 100% of their rated capacity, regardless of the rate of discharge. And, you can use it all and still get substantially longer cycle life.

Highly Efficient

RELiON lithium batteries have super low resistance, allowing you to charge much faster. And lithium batteries are 99% efficient, minimizing the losses during charge. Compare that to traditional lead-acid batteries at 75-80% efficiency, which results in significant loss when recharging.

Long Life

RELiON lithium batteries provide up to 10 times longer life than lead-acid batteries, and they still provide 80% of rated capacity after 2,000 cycles. Spend more time powering your applications and less time replacing your batteries.

Maintenance Free

RELiON lithium batteries are maintenance-free – no watering, no corrosion. Low self-discharge means the batteries don’t lose capacity when they’re idle, assuring that you have the energy you need, every time you need it.

Eco-Friendly

RELiON lithium batteries are the ultimate clean energy. No gassing, no fumes and no pollution. Enjoy reliable power while protecting the environment, using these non-hazardous batteries.

Lightweight & Space-Efficient

Compared to traditional batteries, RELiON lithium solar batteries are much lighter and more compact, making them easier to transport and install in limited spaces while providing the same or better power capacity.

Consistent Power

RELiON lithium solar batteries are designed for deep cycling, providing consistent power through frequent charge and discharge cycles—perfect for off-grid living or backup energy systems.

Top Lithium Batteries For Solar Energy Storage

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InSight Series® 12V 120Ah LiFePO4 Battery

$1,199.95

The 12V InSight lithium battery is designed for peak solar performance, delivering consistent, long-lasting power for your home or business. With advanced battery management technology, it ensures maximum efficiency, faster charging, and a longer lifespan compared to traditional batteries. Built for reliability in any environment, the 12V InSight is the perfect solution for off-grid and backup power needs.

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InSight Series 24V 60Ah Low Temperature LiFePO4 Battery

$1,249.95

The 24V InSight lithium battery offers superior solar energy storage, offering reliable, long-lasting power for residential and commercial systems. With advanced Battery Management System (BMS) technology, it delivers maximum efficiency, faster charging, and a longer lifespan than traditional batteries. Ideal for off-grid and backup applications, the 24V InSight ensures dependable performance in any environment.

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RB48V200 - 48V 200Ah Steel Case LiFePO4 Battery

$6,995.95

The RB48V200 lithium battery delivers robust, long-lasting power with a durable steel case for maximum protection. Ideal for solar energy storage and off-grid applications, it offers high efficiency, fast charging, and zero maintenance—ensuring dependable performance in remote and sustainable power systems.

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Find The Right Batteries For The Perfect Solar Power Bank

Try our lithium battery selector tool.

Lithium Battery Selector

Solar Panel Charge Controllers Explained

Upgrading to Lithium Batteries: What You Need to Know

What Our Customers Are Saying

Off the Grid in Pennsylvania

Off the Grid in Pennsylvania

John M

"I have a bank of 12 RB100s in a 4S3P configuration. The highly efficient charging of LiFePO4 batteries helps make solar energy affordable in northern Pennsylvania. RELiON has the widest selection of LiFePO4 batteries (12 to 48V, varied Ah capacity). The batteries are top-notch, online ordering is easy, sales and support staff are great (and located in the US)."

Tiny Home, Big Living

Tiny Home, Big Living

Matt Organista

“The energy system is key. I did a ton of research and comparisons before deciding. In the end, you really get what you pay for. I know some people who initially thought about using lead acid batteries because they’re cheaper upfront, but do you really want to be sleeping next to that? It’s better to make an investment in a safe, reliable system if it’s going to be in your home, especially near your children. With RELiON batteries, you have no maintenance, no toxicity, and no noise like a generator.”

Lithium Powers Up Solar

Pairing solar with lithium battery storage is a smart investment. While the upfront cost is higher than lead-acid, superior performance and longevity make lithium ideal for off-grid and grid-tie applications.

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5 Steps to Designing an Off Grid Solar Power & Energy Storage System

We’ll help you design your off-grid solar system, from sizing to essential components. Read more for five steps to power your self-sufficient lifestyle.

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