sonnen batteries: everything you need to know (2022)

German battery manufacturer sonnen opened its doors in 2010 and quickly became the breakout star of the German energy storage market.

Their hometown success in Germany led them to enter the U.S. solar battery market in 2015. Since then, sonnen has become one of the most popular brands of batteries to pair with solar panels among homeowners in the U.S., U.K., and Australia.

Currently, sonnen offers two types of solar batteries: the eco and the ecoLinx. Both come in a variety of sizes, with different specifications. In this blog, we’ll review each of them, outline their pros and cons, and break down each of their prices.

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    sonnen batteries: everything you need to know (1)

    The sonnen ecoLinx, pictured above, is one of two types of solar batteries offered by sonnen. Image source: CleanTechnica

    sonnen eco vs. ecoLinx: what are they?

    sonnen’s two battery choices, the eco and ecoLinx, are both able to store solar power for you to use later. The difference between the eco and ecoLinx is in what features they offer.

    (Video) Sonnen Battery Basics

    sonnen eco

    sonnen’s eco battery has the ability to store clean energy your solar system produces so you can use it later. The eco is made up of several 2.5 kilowatt hour (kWh) lithium iron phosphate battery modules that are installed together within a white ‘cabinet’. This “all-in-one” battery also includes the inverter and charge controller.

    sonnen batteries: everything you need to know (2)

    The sonnen eco can learn your energy usage behaviors to help you use energy more efficiently. Image source: sonnen

    The eco detects power outages in real-time, so if the grid goes down you automatically take you off-grid and start running on the battery’s power supply. It also has the ability to analyze how you use energy, so it can learn when the best time is for you to be drawing power from the battery versus the grid.

    The eco comes in seven different sizes, so there is an eco to meet each of your energy storage needs. The following table outlines the specifications for the different sizes of the sonnen eco:

    sonnen eco specifications
    Specificationeco 5eco 7.5eco 10eco 12.5eco 15eco 17.5eco 20
    Total storage capacity5 kWh7.5 kWh10 kWh12.5 kWh15 kWh17.5 kWh20 kWh
    Power rating3 kW3.6 kW7 kW7 kW7 kW7 kW7 kW
    Depth of discharge90%90%90%90%90%90%90%
    Round trip efficiency81.6%81.6%81.6%81.6%81.6%81.6%81.6%
    Weight394 lbs447 lbs543 lbs596 lbs724 lbs777 lbs830 lbs

    The dimensions for the sonnen eco 5, 7.5, 10, and 12.5 are 26" W x 57" H x 19" D

    The dimensions for the sonnen eco 15, 17.5, and 20 are 26" W x 84" H x 19" D

    The warranty for all versions of the sonnen eco is 10,000 cycles or 10 years.

    (Video) How the sonnenCore Home Battery Works

    sonnen ecoLinx

    You can think of the ecoLinx as the premium version of the eco. ecoLinx has all of the same capabilities as the eco, with some advanced features.

    Much like the eco, the ecoLinx is composed of multiple 2.0 kWh lithium iron phosphate batteries placed within a black cabinet.

    sonnen batteries: everything you need to know (3)

    The sonnen ecoLinx is one of the most high-tech solar batteries you can get. Image source: sonnen

    Besides storing energy, it can be integrated into your smart home automation system; you can effectively manage all of your smart devices from the ecoLinx.

    This doesn’t just mean asking Alexa for the weather, you can control everything from your lights to your security system. It also allows you to turn off circuits to certain appliances you’re not using, so you can save energy.

    Speaking of weather, the ecoLinx has the ability to detect when severe weather conditions are approaching thanks to the sonnenProtect software. This way, the battery can start charging itself instead of powering your home, in order to prepare for a power blackout.

    The ecoLinx comes in seven different sizes, ranging from 12 kWh to 30 kWh. The following table outlines the specifications for the different sizes of the ecoLinx:

    sonnen ecoLinx specifications
    SpecificationecoLinx 12ecoLinx 14ecoLinx 16ecoLinx 18ecoLinx 20ecoLinx 30
    Total storage capacity12 kWh14 kWh16 kWh18 kWh20 kWh30 kWh
    Power rating8 kW8 kW8 kW8 kW8 kW7 kW
    Depth of discharge95%95%95%95%95%95%
    Round trip efficiency86%86%86%86%86%86%
    Weight683 lbs741 lbs800 lbs890 lbs950 lbs1253 lbs

    The dimensions for the sonnen ecoLinx 12, 14, 16, 18, and 20 are 26" W x 84" H x 19" D

    (Video) How a sonnen battery works

    The dimensions for the sonnen ecoLinx 30 are 52" W x 61" H x 19" D

    The warranty for all versions of the sonnen ecoLinx is 15,000 cycles or 15 years.

    How much do sonnen batteries cost? Are there incentives?

    sonnen’s batteries come with many advanced features plus an included inverter, which puts them at a higher price point. The sonnen eco starts at around $10,000, while the sonnen ecoLinx 12 kWh model sells for $36,000 online. These costs do not include installation, so the total cost for a sonnen battery system could be even higher.

    You can see why a sonnen is often considered a luxury home battery system. Luckily, there are solar battery incentives throughout the U.S. that can help bring down the costs.

    When energy storage systems are coupled with solar panels, they can qualify for the 26% federal tax credit. Some states have their own solar battery incentives, as well. The most popular is the Self-Generation Incentive Program (SGIP) in California.

    What are the pros and cons of sonnen batteries?

    Both the sonnen eco and ecoLinx make great home energy storage systems. However, they do come with their downsides.

    Pros of sonnen batteries

    Some of the best things about sonnen’s batteries is that they can learn your habits to help you use energy more efficiently. They also get the title of ‘longest lasting battery’ with the ecoLinx’s 15 year lifespan/15,000 cycle warranty, and they get bonus points for operating as a smart home hub.

    Another benefit is that both the eco and ecoLinx are lithium iron phosphate (LFP) batteries. Because these batteries don’t contain cobalt, they are less likely to catch fire than some other lithium ion batteries.

    Cons of sonnen batteries

    The main disadvantage of sonnen batteries is that they are more expensive than other residential energy storage options. When you compare the sonnen eco to the Tesla Powerwall, you get more usable capacity with the Powerwall for almost $3,000 less.

    (Video) Reviewing the features of the sonnenBatterie 9.53 Hybrid

    sonnen batteries are also very large in size, with the smallest one weighing 394 pounds.

    The sheer size of these batteries limit where they can be installed. They have a sleek design so they can be easily integrated into your home, however, not everyone wants to put a 400-pound battery in their living room.

    Are sonnen batteries worth it?

    Whether or not the price of the sonnen battery is worth it is up to you, as it really depends on what you’re looking to get out of your battery system.

    If you’re trying to save money by installing a solar battery, then a high priced sonnen battery probably isn’t the right storage solution for you. This is especially true if you live in an area with net metering because then your utility acts as your battery - without any extra investment!

    However, if you live in an area that is prone to grid outages, the convenience and advanced battery technology and energy management system that sonnen offers when the grid is down could make the eco or ecoLinx worth it for you.

    If you don’t experience grid outages, but just want to have a source of backup power in case of an emergency, the sonnen battery probably isn’t the best option, simply because the price is so high.

    sonnen batteries, though pricey, do have some of the best features of any solar battery storage system on the market. They let you increase your home’s solar energy self-consumption, while using smart technology to tailor to your energy needs.

    If the electric grid in your area is unreliable, or if you’re looking to get the smartest battery for your home, then a sonnen battery could be right for you. Otherwise, you should continue to get quotes from solar installers about what battery will meet your needs.

    Key takeaways

    • sonnen offers two residential solar batteries: the eco and ecoLinx.
    • The sonnen eco is able to learn your usage habits to increase your home’s energy efficiency, automatically disconnect you from the grid during a power outage, and serve as a smart home hub.
    • The sonnen ecoLinx has the same features as the eco, but has additional advanced features like weather prediction to keep your battery charged in case a storm hits.
    • The sonnen eco starts at about $10,000, while the ecoLinx starts around $36,000.
    • sonnen batteries come at a high price, but offer many advanced features.
    (Video) An Introduction to the Sonnen Solar Battery


    How long will a sonnen battery last? ›

    A performance test, running for almost 8 years now, has now shown that a lithium iron phosphate (LFP) battery type used in the sonnenBatterie has exceeded 28,000 charging cycles already. This means that a single battery cell was fully charged and discharged 28,000 times – without reaching the end of its service life.

    How does sonnen battery work? ›

    How the sonnenCore Home Battery Works - YouTube

    Can Sonnen batteries be stacked? ›

    Sonnen batteries are modular, therefore making it easy to stack them to suit your preference storage capacity as compared to others such as Tesla, which offers one size of 13.5kWh.

    How many batteries do I need to go off grid? ›

    If you want to keep the power on when the grid is down, you'll usually just need one solar battery. If you want to go off-grid completely, you'll need far more storage capacity, more along the lines of 8-12 batteries.

    How much do Sonnen batteries cost? ›

    The sonnenBatterie 9.53 hybrid starts at 2.5kWh for $8,700. However, most customers start on either a 7.5kWh solar battery from $12,000, or 10kWh from $14,000.

    How much does a Sonnen ecoLinx cost? ›

    The sonnen ecoLinx costs $36,000 or more before installation. The ecoLinx comes in one size with 8 kW of power output and between 12 and 30 kWh of usable capacity depending on the model.

    How much does the Sonnen eco cost? ›

    How much does the sonnen eco cost? The Sonnen eco has a starting list price of around $10,000, which includes an integrated inverter and energy management software.

    Where are Sonnen batteries made? ›

    Since taking over the premise of the former Holden factory at Elizabeth, sonnen has commenced production of sonnenBatteries that are designed in Germany and made in Australia. More than 50 sonnen staff at Elizabeth are employed in production, warehousing, shipping, the call centre and technical service.

    Who makes Sonnen battery? ›

    You may not have heard of the parent company, Sonnen GmbH.

    Founded in 2010 in Germany, it has already installed over 60,000 battery storage systems worldwide. In 2019, it was bought by Shell New Energies, so expect the Sonnen Shell marketing combination to increase your awareness of its storage solutions soon.

    Is Sonnen better than Tesla? ›

    Although in regards to power output, the lithium NMC batteries used by Tesla have a much higher discharge rate which provides greater power output, 5kW continuous, compared to a maximum of 3.3kW power rating from the Sonnen ECO.

    Is there anything better than a powerwall? ›

    If you're looking for the most powerful home battery, the Generac PWRcell is a stronger option than the Tesla Powerwall. It's probably not a surprise that the company long known for making backup power generators has a solar battery option.

    What battery does Tesla powerwall use? ›

    The Powerwall 1 battery uses nickel-manganese-cobalt chemistry and can be cycled 5,000 times before warranty expiration. The Powerwall has a 92.5% round-trip efficiency when charged or discharged by a 400–450 V system at 2 kW with a temperature of 77 °F (25 °C) when the product is brand new.

    How many solar panels do I need for a 2000 sq ft home? ›

    On average, a 2000 sq ft home would need a 4kW system which means 10 400-watt panels.

    Can I run my house on solar power only? ›

    Can I Run My Whole House on Solar Energy? With a modern solar energy system, including power storage, you can definitely run a whole house completely on solar power. Today's high-efficiency solar panels and solar batteries make it cheaper than ever before to power an entire home exclusively using solar energy.

    How many solar panels do I need to run a refrigerator? ›

    How many solar panels do I need to run a refrigerator? The average refrigerator takes about three or four average solar panels to run. The average refrigerator found in the United States uses approximately 57 kWh per month while the average freezer uses 58 kWh. Adding those together brings a combined total of 115 kWh.

    How much do Tesla battery packs cost? ›

    Typically, the most basic battery replacement in tesla costs between $13,000 and $14,000. For the Model S premium sedan, replacing a Tesla battery costs around $13,000-$20,000. Model 3 entry-level sedan and Model X premium SUV battery replacement can cost at least $13,000 and $14,000 respectively.

    How much does a Tesla powerwall 2 cost? ›

    Each Powerwall 2 costs $5,550, and the average US home will need 2 or 3 to supply its power needs. A single Powerwall can provide limited backup power for critical appliances and lights, but not enough for the entire power usage of a typical house.

    How much is a Tesla powerwall? ›

    How Much Does the Tesla Powerwall Cost? The Tesla Powerwall has a higher price than many other battery systems, but you also get a high storage capacity and power output. The price is calculated based on how many units you order: a single Powerwall sells for $10,500, but two units will cost $17,000 ($8,500 each).

    Where are Sonnen batteries made? ›

    Since taking over the premise of the former Holden factory at Elizabeth, sonnen has commenced production of sonnenBatteries that are designed in Germany and made in Australia. More than 50 sonnen staff at Elizabeth are employed in production, warehousing, shipping, the call centre and technical service.


    1. sonnenBatterie Evo | Technical Specifications Webinar
    (sonnen Australia)
    2. A Simple & Safe Home Battery Solution | sonnenCore | Presented by Soligent
    (Soligent Distribution)
    3. Overview of Sonnen eco Batteries at SPI 2017
    (altE Store)
    4. sonnenBatterie Evo | Technical Features
    (sonnen Australia)
    5. Sonnen Battery vs Tesla Powerwall 2: 2022 Lithium Battery Comparison. Best back up battery is?
    6. sonnenBatterie 10 – What is unique about the battery?

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