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Sigma 3.97kWh Stackable Batteries
$2,399.00 (Primary)
$2,099.00 (Secondary)
FINANCing availAbLE
Under the Inflation Reduction Act (2022), all energy storage systems over 5 kWh qualify for a 30% Federal Tax Credit.
The Sigma Stackable Storage system is an advanced, scalable battery solution designed to meet a wide range of energy storage needs. With a base capacity of 3.97 kWh, it can be expanded up to 27.8 kWh, ensuring flexibility and adaptability for various applications. Featuring a 90% depth of discharge and high round-trip efficiency, Sigma delivers reliable performance with minimal energy loss. The system is easy to install with a plug-and-play setup, and its robust design allows for both indoor and outdoor use. With a voltage range up to 459.9 V and wide temperature tolerance, Sigma Stackable Storage is built to perform in diverse environments.
Returns notice - For any returns where there are technical issues or breakage, you can return and money will be refunded. If the shipping box has been opened and the product is in working shape, you cannot be refunded due to the nature of this product. If our customer service team determines that this is a warranty matter, we will have you ship it back to us. You must properly package the product including proof of your purchase date with the product. You must then send the product by mail or courier, with shipping costs paid by you, to Joule Case at 121 E 38th St, Suite 102, Garden City, ID, USA 83714. We will process your return and send your repaired or replacement product to you, at our expense, for warrantied products being shipped to locations in North America.
For products purchased or being shipped outside of North America, please contact the local distributor from whom you purchased the product, or email info@joulecase.com to obtain further distributor information.
Shipping costs are additional and are based on the size of the order and the destination.
Expandable battery system designed to charge using renewable or on-grid sources.
Traditional generators produce toxic, harmful fumes that are bad for humans and the environment.
Our batteries are silent—no shouting to have a conversation or being drowned out by the constant hum of a generator.
The stackable design gives you the control to add more power based on your needs.
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