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https://www.alphaess.com/understanding-solar-terminology:-ac-coupled-vs-dc-coupled

Do you know the difference between AC and DC-Coupled connections?

AC-Coupled connection means the energy storage system is coupled with an AC power source such as the grid or PV inverter. DC-Coupled connection means the energy storage system is coupled with a DC power source directly such as PV panels or DC batteries.

DC-Coupled is ideal for new and off-grid energy storage system installations in both residential and commercial applications. However, AC-Coupled systems can be much more convenient for retrofits in which customers want to add batteries to existing solar systems, and the AlphaESS SMILE-B3-PLUS was born to be a perfect fit for this market. It can be plugged into the switchboard just like other home appliances and expandable by simply stacking more battery modules to make the best use of your PV.

Discover more about this 3kW/5-30kWh ac coupled system

AlphaESS SMILE-B3 PLUS 3.6/5kW AC Coupled Battery Storage Inverter For Sale-AlphaESS
https://www.alphaess.com/smile-b3-plus-3kw-residential-energy-storage-system

As for the dc coupled battery, for sure we also have plenty of products for our clients to choose and firstly we may need to introduce the concept of Hybrid system.

For more information about ess batteries, please feel free to contact us!