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Marstek debuts AC coupled residential batteries

Source：ESS NEWS

China-based Marstek Energy has launched new energy storage systems (ESS) for residential applications.

 

“Energycube AC Couple ESS supports both single and multiple units, allowing scalability up to 10 kW output and a capacity of up to 20.48 kWh,” the manufacturer said in a statement. “Designed for straightforward installation without technical expertise, ideal for various environments including forest cabins, yachts, and remote homes.”

 

The new products are available in two versions with a capacity of 2.56 kWh or 5.12 kWh, respectively.

 

The smallest system, called Venus-C, measures 450 mm x 550 mm x 20 mm and has a weight of 44 kg. It has a rated output power of 2.5 kW and a rated grid voltage of 230 V.

 

The largest system, dubbed Venus-E,  has a size of 560 mm x 690 mm x 201 mm and weighs 60 kg. It features an output power is 2.5 kVA and the same grid voltage as the Venus-C battery.

 

Both products feature a depth of discharge of 90% and an IP65 protection level. They use LiFePO4 as the cathode material and have an ambient operating temperature range of -20 C to 60 C.

 

The manufacturer said the systems can operate for more than 6,000 cycles.

 

“The new product is equipped with access to real-time electricity prices across 46 countries, supporting optimized energy cost management,” the company said, noting that it also utilizes peak shaving and valley filling capabilities, enhancing daily energy savings. “It allows for the simple upgrade of existing solar installations to a hybrid storage solution, enabling whole-home backup power within minutes.”

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