We reviewed the top solar batteries and found that the Tesla Powerwall 3 comes in at number one.
Home batteries can be a great investment for your home, though we’ll admit they’re not for everyone. Adding storage to your solar panel system makes perfect sense if your area doesn’t have a consumer-friendly net metering program, you face frequent power outages, or you simply want more independence from your utility company.
If that’s you, the next step is weeding through all of the home storage options on the market. Choosing the best battery boils down to factors like battery chemistry, performance, customization, warranty, and cost. We looked at all these factors in dozens of models quoted on the EnergySage Marketplace to determine the best batteries of 2026. 
Six brands stood out: Tesla, FranklinWH, MidNite Solar, Sigenergy, Enphase, and SolarEdge.
EnergySage partners with Qmerit to help you find trusted, certified installers to make your battery installation safe and simple.
Price: $998/kWh
Capacity: 13.5 kWh 
Roundtrip efficiency: 97.5%
The Tesla Powerwall 3 earns its top spot with a well-rounded set of specs and the best EnergySage score. It delivers one of the highest continuous power ratings on this list, along with a strong power-to-energy ratio—meaning it can run more appliances at once without breaking a sweat. Its high efficiency and full energy optimization capabilities make it a great fit for maximizing time-of-use savings, and its autonomous backup functionality ensures seamless performance during outages. The built-in hybrid inverter also allows for both AC and DC coupling, giving it more flexibility than many competitors.
But, if you have a shady or complex roof and want panel-level optimization for your solar panel system (e.g., microinverters), you might consider skipping the Powerwall 3. You'll get the most out of the Powerwall 3 by DC-coupling it, which means using the Tesla hybrid inverter that comes with it.
Price: $1,177/kWh
Capacity: 15 kWh
Roundtrip efficiency: 90%
The FranklinWh aPower 2 is a powerful and scalable battery. It has the highest peak power (enabling you to run appliances that require a lot of energy to start) and the second-highest continuous power (letting you continuously power heavy loads) specs on our list, making it a reliable option for those looking to keep the lights on during power outages. It also boasts a high usable capacity (15 kWh) and allows you to stack up to 15 modules, making it particularly good for those interested in whole-home backup or going off-grid. And, its 15-year warranty is one of the longest on the market.  
The aPower 2’s biggest downside is that it’s one of the least efficient batteries in our top five, which means you’ll lose a bit more stored energy. While it’s still higher than most in the market with 90% roundtrip efficiency, there are plenty of more efficient batteries to choose from if that’s your priority.
Price: $338/kWh
Capacity: 16 kWh
Roundtrip efficiency: 97.5%
The MidNite Solar Powerflo 16 pairs the largest usable capacity in one battery unit on this list with excellent efficiency, making it a strong pick for homeowners with high energy needs. Its long 15-year warranty and solid backup performance also make it well-suited for resilience-focused setups, especially if you want fewer, larger batteries.
The tradeoff is power. Its modest continuous and peak power ratings mean it’s not as well-suited for running multiple large appliances at once compared to higher-power batteries. And while the value is hard to ignore, MidNite Solar is a newer market entrant, meaning installer familiarity and long-term track record aren’t as established as the bigger names.
Price: $562/kWh
Capacity: 8.8 kWh
Roundtrip efficiency: 98%
If maximizing every kilowatt-hour you store is your priority, the Sigenergy SigenStor BAT delivers. With the highest roundtrip efficiency on this list, it wastes very little energy during charging and discharging—ideal for homeowners looking to get the most out of time-of-use savings or limited solar production. Its modular design also makes it flexible to size over time.
While the specs are undeniably strong on paper and a few years under its belt (it previously operated as PointGuard Energy), Sigenergy is still relatively new to the market. So, like MidNite Solar, long-term performance, installer familiarity, and support infrastructure aren’t as proven as more established brands.
Price: $1,404/kWh
Capacity: 10 kWh 
Roundtrip efficiency: 90%
The Enphase IQ Battery 10C delivers strong peak power, making it capable of handling short bursts from energy-hungry appliances. Its 15-year warranty and solid backup capabilities add to its appeal, especially for homeowners already in the Enphase ecosystem.
But you’ll pay for that integration. It’s one of the most expensive batteries on this list, and its lower efficiency and more limited energy optimization features make it less attractive if maximizing savings is your primary goal.
Price: $1,532/kWh
Capacity: 9.7 kWh 
Roundtrip efficiency: 94.5%
The SolarEdge BAT-10K offers dependable performance with solid efficiency. It’s designed for seamless DC coupling with SolarEdge systems, which can improve overall system efficiency when paired correctly.
That tight integration is also its biggest limitation. It’s less flexible than AC-coupled alternatives and comes at the highest price on this list, with relatively lower power output compared to similarly priced competitors.
We evaluated dozens of battery models quoted through the EnergySage Marketplace to determine which solar batteries are best. Here are some of the most significant factors we used to compared them:
Roundtrip efficiency measures how well your solar power system (battery and inverter) converts and stores electricity. 
There are losses associated with any electrical process, meaning you'll lose some kWh of electricity when you invert it from direct current (DC) electricity to alternating current (AC) electricity or when you put electricity into a battery and take it out again. A solar battery's roundtrip efficiency tells you how many units of electricity you'll get out of a battery for every unit of electricity you put into it.
Keep in mind that if your battery can be DC- or AC-coupled, its roundtrip efficiency is based on it being DC-coupled. That means if you decide to AC couple it, its efficiency will drop.
A battery's capacity (or size) is the amount of electricity it can store and supply to your home. More specifically, usable capacity tells you how much stored electricity you can actually access. A battery with a depth of discharge (DoD) below 100% will have a usable capacity lower than its total capacity, meaning you can't access all of its capacity.
While power is expressed in kilowatts (kW), battery size is expressed in kilowatt-hours (kWh), or power multiplied by time. Thus, battery size tells you how long your battery can power parts of your home. Just remember that the more power you use, the faster you'll run out of stored electricity. Here’s an example: 
A typical compact fluorescent lightbulb uses about 12 Watts (or 0.012 kW) of power, while a 3-ton AC unit draws 20 Amps, or about 4.8 kW. If you have a 5 kW, 10 kWh battery, you can only run your AC unit for two hours (4.8 kW x 2 hours = 9.6 kWh). However, that same battery would keep 20 lightbulbs on for two full days (0.012 kW x 20 lightbulbs x 42 hours = 10 kWh).
A battery's power rating is usually measured in kW and divided into two categories: continuous and peak power. Continuous power refers to how much electricity a battery can consistently output, which is important if you want to run multiple devices simultaneously.
Peak power expresses how much power a battery can provide in short bursts (usually 5-10 seconds). It's important if you have an appliance like a sump pump that requires a large amount of power to turn on but then runs at lower power.
A battery's chemistry refers to the primary compound used to store electricity inside it. Today, most home batteries use lithium-ion chemistry, which can be broken down into three primary categories: Lithium Nickel Manganese Cobalt Oxide (NMC), Lithium Iron Phosphate (LFP), and Lithium Titanium Oxide (LTO).
NMC
None of the best batteries on our list are NMC. While NMC batteries are more power-dense than LFP and LTO batteries (they take up less space per kWh of capacity), they're a little less stable. They don't last as long and are slightly more susceptible to thermal runaway, which can, in rare cases, cause overheating, fire, or an explosion.
LFP
Most of today's best batteries are LFP. These batteries are very safe, last a long time, and are relatively affordable.
LTO
LTO batteries are the cream of the crop (besides being the least power-dense) but have a high upfront price point. None of the batteries on our list are LTO because that price tag often makes them unpopular with installers and homeowners.
A battery's coupling refers to its configuration relative to your solar inverter and electrical panel. There are two ways batteries can be coupled: alternating current (AC) coupling and direct current (DC) coupling. Some battery models support both types of coupling, making them extra flexible in their configuration.
AC-coupled
In an AC-coupled system, electricity flows from solar panels to the home before being stored in the battery. 
In this setup, the power in your battery is inverted three times before you use it:
From your solar panels (DC) to your home (AC)
From your home (AC) to your battery (DC)
From your battery (DC) back to your home (AC)
Power is lost during each inversion, so it's not very efficient. However, it's the easiest and cheapest setup if you’re adding batteries to an existing solar panel system.
DC-coupled
With a DC-coupled system, electricity is stored directly in your battery before going to your home. 
With this setup, power is only inverted once: from your battery (DC) to your home (AC).
DC-coupled systems use the same inverter (a hybrid inverter) for the solar panels and battery, so they're much more efficient. However, they don't make sense if you're adding a battery to an existing solar panel system. They're best for new solar-plus-battery systems.
Warranties cover a battery’s integrity and output for a specific duration, usually around 10 years. As with any warranty, read these documents closely: There are often clauses that can void your warranty if you don't follow them.
Each time you drain and charge your battery, it slightly reduces its ability to hold a full charge. Many brands promise that your battery maintains a certain percentage of initial capacity by the time your warranty term is up. To calculate the warrantied capacity at the end of the warranty term, multiply the end of warranty capacity percentage by the battery's initial usable capacity.
Some battery companies include a throughput or cycles clause so you don't overuse your battery during the warranty period.
These clauses are similar to a car's mileage warranty. Throughput tells you how much electricity your battery can move through during its lifetime, while cycles measure how many times you can charge and drain it. 
To convert a battery's expected or warranted throughput into full cycles, divide its throughput (expressed in kWh) by its usable capacity. Then, you can estimate its expected lifespan by dividing that cycle's number by the number of days in the year. A 20,000 kWh throughput warranty on a 10 kWh battery means 2,000 expected cycles, or a cycle per day for 5.5 years.
A battery’s intelligence determines how well it can keep your home running during an outage and how effectively it manages your energy day to day. The best systems can automatically detect outages, switch to backup power, and prioritize essential appliances so you get the most out of your stored energy.
It also plays a big role in savings. More advanced batteries can charge and discharge based on your utility’s rates—storing energy when it’s cheap (or when your solar panels are producing) and using it when electricity is most expensive.
Installing a home battery is a significant investment—most systems cost about $15,000 for roughly 13.5 kWh of storage before rebates and incentives—but the upfront cost only tells part of the story. 
A more expensive battery can be worth it if you’re getting better performance, higher efficiency, or a longer usable lifespan. The important thing is understanding what’s driving the price and whether those features actually improve your day-to-day experience or long-term savings. A battery that can deliver more usable energy over its lifetime, or maintain performance longer, can offer stronger returns, even with a higher upfront price.
Popularity is also worth paying attention to, especially from an installer's perspective. Batteries that are frequently quoted and installed have typically proven themselves in the field, with consistent performance, responsive manufacturer support, and fewer warranty issues. That track record makes a difference: Installers are more familiar with these systems, which can lead to smoother installations and faster troubleshooting if something goes wrong.
*The scoring system only considers the top 40 quoted batteries from October 2025 through March 2026.
The Tesla Powerwall 3 is our best battery overall, but that doesn't mean it's the best battery for you. Some batteries are ideal for certain setups but won't work in others. Here are some questions to think about to find the best battery for you:
Batteries with high usable capacities last a long time (if you don't use too much power at once). 
The average home needs a battery system that's at least 30 kWh to run for a full day without recharging. But most people just choose a few critical loads to power with their battery during outages, in which case you can get away with a smaller battery (about 10 kWh). Plus, if you have solar, you can continuously recharge your battery as long as the sun is shining.
If you want to go off-grid or power your whole home for days, you'll likely need at least 60 kWh, unless you don't use much electricity.
If you want to power most of your appliances simultaneously, look for a battery with a high continuous power rating.
Choose a battery with a high peak power rating to power appliances that require high start-up power (such as a sump pump). 
As a reminder, using more power will drain your battery faster. If you need a lot of power, make sure your battery’s usable capacity can support these power outputs over time.
AC-coupled batteries are usually the way to go if you already have solar and want to add storage. While less efficient than DC-coupled batteries, they're much easier to retrofit to an existing solar panel system and will save you a lot of money. 
If your roof is shady, you should also consider an AC-coupled battery. Microinverters maximize solar production by converting electricity at the panel level, but they aren’t compatible with DC-coupled batteries. Instead, DC-coupled batteries require a hybrid inverter that works for both solar and storage.
If you plan to install your battery outside, ensure its enclosure is outdoor-rated. Your installer can help you determine which batteries are suitable for outdoor use and which are better suited for indoor use. 
Some batteries can also be mounted to walls, while others must stay on the ground––this can take up a fair amount of space. As we explained above, when it comes to lithium-ion batteries, LTO batteries take up the most space per kWh capacity, NMC batteries take up the least, and LFP batteries are somewhere in the middle.
The best battery for your home depends on what you intend to use it for. Are you looking for occasional backup power during temporary outages, or do you want to regularly consume your stored energy to avoid pulling electricity from the grid? A single 10 kWh battery should do the trick for the former, while the latter requires a battery system with plenty of usable capacity and power output.
This is where a battery’s intelligence can really make a difference. As a backup, an intelligent battery can automatically kick on during an outage and stretch your stored energy by prioritizing what matters most. For savings, it can also charge and discharge around your utility’s rates, so you’re using energy when it costs the least.
EnergySage partners with Qmerit to help you find trusted, certified installers to make your battery installation safe and simple.
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