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Best Solar Battery 2023

Prices, Specs, and Reviews

For business

Best solar batteries of 2023

We looked at the top-selling and most popular home solar batteries to determine the best options on the market today. Here’s our review of the best solar batteries you can find in 2023.

  • LG Chem RESU
  • Panasonic Evervolt
  • Sonnen eco
  • SunVault Storage
  • Tesla Powerwall 2

Best solar battery features

When selecting the best solar battery, you should look for capacity, duration, battery type, and cost.

  • Capacity is the number of kilowatt-hours (kWh) of electricity the battery can store for later use. This number may be a range, as you can purchase batteries in differing storage capacities. Some batteries are stackable, meaning you can use more than one in a home energy storage system to add extra capacity.
  • Duration is how long the battery is expected to last. This lifespan is measured by years or by the number of charging cycles the battery can achieve.
  • Cost is the price you will pay for the solar battery storage system. Keep in mind that you may have additional installation fees and material costs, but solar credits may apply.

Get your free solar savings estimate

You can significantly lower your energy costs by investing in solar panels. Enter some basic information below and we’ll provide an instant, free estimate of solar cost and savings for your home.

*Price does not include solar battery labor costs. Installation costs vary based on battery features and manufacturer and can cost several thousand dollars.

What are the best solar batteries?

Let’s examine the leading batteries available for home solar energy systems. These products are all manufactured by companies that provide strong warranties and produce high-quality energy storage systems.


LG is a Korean company known for its durable electronics. It is one of the largest lithium-ion battery manufacturers. There are two types of LG RESU batteries — the LG 16H or 10H Prime. Each type has 95% efficiency, which is how much the battery can supply your system after considering the amount of energy it takes to function. LG guarantees that its RESU solar batteries will maintain a 70% minimum capacity for 10 years.

Panasonic EverVolt

EverVolt is modular, so you can pair multiple batteries for additional storage capacity. Using the  EverVolt app, you can manage your battery charge levels, energy consumption, and backup power on the go. Known for its electric car batteries, Panasonic guarantees that its home solar batteries will maintain a 60% minimum capacity at the end of its 10-year, 6,000-cycle warranty. 

Sonnen eco

Sonnen is a German battery manufacturer that allows you to select a battery size in a range of options to fit your home energy needs. The Sonnen eco all-in-one battery system contains an inverter and can easily fit in an indoor area, such as your garage. Sonnen storage batteries are a popular option for residential and small commercial solar battery banks. Plus, they have a 10-year or 10,000-cycle warranty. 

SunPower SunVault

SunPower is a trusted name in high-quality, efficient solar panels. The SunVault solar battery seamlessly integrates with the SunPower Equinox system to provide a whole-house green energy solution. The SunVault monitoring app lets you view battery performance data and manage your energy storage preferences. This solar energy storage system has an impressive 10-year warranty with unlimited cycles. It guarantees the battery will maintain 70% minimum capacity and includes labor for repairs.

Tesla Powerwall 2

The Tesla name is associated with advanced clean energy products, including its sleek electric vehicles (EVs). This home solar energy storage battery is 90% efficient and has an impressive battery warranty. Tesla guarantees the Powerwall 2 will maintain 70% minimum capacity at the end of 10 years with unlimited cycles.

What to look for when shopping for solar batteries

There are several important considerations to examine when selecting a battery for your home solar system, including storage capacity, peak output, continuous power, cost, warranty terms, and roundtrip efficiency. Just like a battery for your home electronics, it’s critical for solar batteries to hold their charge for extended periods and provide power when you need it most.

It is also important for solar storage batteries to integrate well with other solar energy components. An experienced solar energy installer can design an energy storage system that merges with your solar equipment. Choose Energy can connect you with a solar battery installer near you.

Type of solar batteries

Until about a decade ago, most solar batteries were lead-acid, like the ones found in most gas-powered cars. However, these batteries have a relatively short lifespan and require regular maintenance. Lithium-ion batteries have become popular in electronics, EVs, and solar storage batteries because they are compact, charge quickly, and last for many years.

Most advanced lithium-ion solar batteries fall into two categories: Nickel Manganese Cobalt (NMC) or lithium ferrophosphate (LFP). Just like there are pros and cons to solar energy, there are also positives and negatives to each solar battery chemistry. The best home storage battery for your household likely depends on your energy goals and project budget.

Advantages of LFP solar batteries

  • Known for safety
  • Usually have a longer lifespan
  • Contain less toxic materials

Advantages of NMC solar batteries

  • Often have a lower upfront cost
  • Can usually withstand colder temperatures
  • Higher energy density, smaller size

Battery chemistry for the best solar batteries

  • LG Chem RESU: NMC
  • Panasonic Evervolt:  NMC
  • Sonnen eco: LFP
  • SunVault Storage: LFP
  • Tesla Powerwall 2: NMC

What is the best type of solar battery?

Because there are advantages to both NMC and LFP battery chemistries, each type is widely used in home solar energy storage systems. If you want a compact battery, a lower upfront cost, and the ability to endure colder temperatures, an NMC battery is a good choice. However, if durability, safety, and a longer lifespan are top priorities, LFP solar batteries are best.

Best solar battery FAQs

Should I get a solar battery?

You must install batteries if you want your solar panel system to provide power during outages. Unfortunately, adding solar batteries will increase the cost of your solar system significantly, but you can still recover 30% of it with the solar tax credit. Solar systems with batteries are also popular for off-grid homes.

What are the common misconceptions about solar batteries?

A common myth about solar batteries is that if the power goes out, a solar battery will run your whole house for a long period of time. A solar battery will allow primary functions to continue, such as the blower on the furnace, LED lights, and refrigerator. However, even with a full charge, the best solar batteries will power most homes for a limited period, especially in cloudy weather. Therefore, most solar homeowners prioritize which electric loads to run during power outages.

Can I add a battery to my solar panel system later?

Yes, you can retrofit your existing solar system by adding batteries. However, AC-coupled solar batteries are easier to incorporate with existing solar systems without replacing your existing inverter because they contain a built-in inverter. Some of the leading AC-coupled batteries are the Panasonic EverVolt, Sonnen eco, and the Tesla Powerwall. 

What else should I know about solar batteries?

Your solar installer will likely have a preferred solar battery. If you decide to get a solar battery storage system, you may want additional information on the battery that comes with your solar PV system. Other common questions to ask your installer about solar batteries include: 

  • How long will my solar battery last during a power outage? 
  • How long does it take to charge my solar battery?
  • What is the lifespan of the solar battery bank?
  • How can I use the solar battery app to monitor my battery charge level?