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Frequently Asked Questions

What is the sonnenBatterie?

The sonnenBatterie is a fully integrated, smart home storage solution made up of safe and long-lasting Lithium Iron Phosphate (LiFePO4) battery modules, an intelligent energy management software and a power inverter.

It is fully-integrated, as there are three components that are designed to work together to offer a high-quality product in one cohesive enclosure. We call this a smart home storage solution, as the energy management software includes a self-learning algorithm that continuously adapts to your consumption patterns to help your household achieve the highest self-consumption and energy savings.

Why does sonnen use LFP battery chemistry?

The simple answer is: It’s one of the safest and longest lasting Lithium Ion chemistries available for home battery systems. We’ve been testing various battery chemistries since 2010 and have always chosen LFP battery cells over other battery chemistries such as Nickel, Manganese and Cobalt (NMC).

How many sonnenBatteries have been installed to date?

As of 2023, sonnen has installed over 100,000 sonnenBatteries around the world.

What is the right capacity for my household?

The sonnenBatterie is a modular home storage system and can be designed to fit exactly your household’s needs. That also means that it’s capacity can be increased even after install, if the initial system design does not have enough capacity to power you through the night. Additional battery modules can be added at a later time by your solar retailer to match your increased energy needs. Just give them a call and ask for a capacity upgrade.

Tip: To find the right capacity for your household, check your electricity meter in the evening and in the morning for a few days to find out what you use during peak times (e.g. between 6pm and 6am).

Tip: Make sure that you get a battery cabinet from the get-go.

How much does sonnenBatterie cost and where do I buy one?

The price to install a sonnenBatterie depends on the battery capacity and installation costs. This will be provided as a quote from your solar installer. sonnen works together with qualified solar installers across Australia who are accredited to install sonnen home batteries. To get a quote, contact us at 13 76 66 or register here for a call-back from our customer support team.

What is the warranty period for a sonnenBatterie and how does it compare?

sonnen offers a 10-year full warranty on all our solar battery storage components. This means that your investment is protected for 10 years or 10,000 cycles, whichever comes first. During the warranty period, all components of your sonnenBatterie are covered: the inverter, all power electronics, the energy manager and battery modules.

Is the sonnenBatterie safe?

Yes. We only use the safest Lithium technology available: Lithium Iron Phosphate (LFP or LiFePO4) in our. Since the very first sonnenBatterie, sonnen have been using LFP battery modules because of LFP’s inherent safety attributes. The main point being that the battery cells do not burn and, therefore, are the ideal choice for our residential energy storage solution.

I already have a solar system. Can I still add a sonnenBatterie?

Yes. The sonnenBatterie can be retrofitted to any existing solar system. If you already have solar panels installed on your roof, the sonnenBatterie can simply be added by an accredited sonnen installer to complete your home energy system. Your existing solar panels and solar inverter do not have to be changed.

If you have an enquiry or would like to get a quote, please call us on 13 76 66 or register here for a call-back from our customer support team.

I do not have a solar system yet. How do I get a complete system?

Your preferred solar designer and installer will be able to work with you to design the most appropriate solar and home battery system for your needs. To get product consultancy and a quote, call us on 13 76 66 or register here for a call-back from our customer support.

Can the sonnenBatterie be installed outdoors?

Yes. The sonnenBatterie Evo is designed to be installed in outdoor locations. For more information read our blog on “Indoor vs. Outdoor - Where to install your solar battery”.

Does the sonnenBatterie always need to be connected to the Internet?

The sonnenBatterie needs to be connected to the Internet for warranty purposes and to allow you to monitor your household energy usage. The battery can operate without an internet connection, however, it cannot receive automated software updates. This means that you won't be able to use the monitoring and, therefore, it does not allow us to provide you with a warranty.

How do I know if the sonnenBatterie is working?

When the battery is operating in normal conditions, the LED indicator pulsates in white. Through the Internet connection, the system sends metering data to the online portal and monitoring app and informs our technical support team on any maintenance requirements. sonnen works together with your installer to ensure the sonnenBatterie gets back online as soon as possible if it ever loses its connection.

The different colours displayed by the eclipse, or by the LED indicator and its operational status is listed below:

• Pulsing White: Normal - No worries, everything is fine.
• Pulsing Green: Off-grid - No worries, your most important appliances are being supplied.
• Pulsing Orange: No Internet connection - Please try to restart your internet router.
• Solid Red: Error - Please call our technical support for service.

Is the sonnenBatterie recyclable?

Yes. The components used in the sonnenBatterie are fully recyclable. The power electronics can either be refurbished for use in a second life or the metal can be recycled. The LFP battery modules is the most environmentally-friendly Lithium Ion technology available to date, and can be taken apart to recycle both the Lithium and the Iron Phosphate components.

Is the warranty affected when I join a Virtual Power Plant?

One of the first things you might have learned about your new home solar battery is that every battery has a certain number of cycles in its lifetime. sonnen has a warranty of 10 years or 10,000 cycles, whichever comes first (though tests have shown it can last much longer). Batteries degrade with both time and cycles, so it's hard to predict when your battery will degrade past its useful life. However, if you were to cycle your battery every day for 10 years, you would run 3650 cycles – that's over 6,000 cycles of potential value.

sonnen allows you to capture this value through your participation in the sonnenVPP through our sonnenConnect contracts. Save money with your home battery contract and help to stabilise the grid with green energy.

Does the sonnenBatterie power my house when the grid fails?

Yes, the sonnenBatterie is able to provide backup power to your home in the event you lose the grid during a blackout or power outage. Your preferred sonnen accredited installer will be to assist in designing your system to offer this functionality.

Does the sonnenBatterie Evo recharge during grid failure (blackout)?

Yes, the sonnenBatterie Evo can utilise a single-phase solar system up to 6kW to recharge the battery during blackouts and supply dedicated circuits in the household, even if the connection to the grid stays offline for extended periods.