The Chinese manufacturer said the system is designed for easy AC-coupled integration with existing PV systems and scalable expansion up to 7.5 kW three-phase output. The system is said to deliver an AC power of 800W – 2.5kW and supports PV input up to 5.76kW with an efficiency of 96.5%.
From ESS news
Chinese inverter and storage system manufacturer Deye has released a new hybrid storage system for plug-and-play solar energy and residential PV applications.
“The system supports AC coupling, allowing it to be seamlessly integrated with existing solar panels or microgrids without the need for major rewiring or inverter replacement,” the company said in a statement. “Individual 2.56 kWh units can be connected in parallel to form a three-phase configuration, supporting a maximum power of 7.5 kW.”
The 2.56 kWh Micro Hybrid ESS system measures 560 mm x 330 mm x 210 mm, weighs 30 kg and complies with international standards including VDE 4105, IEC 61727/62116, AS 4777.2, CEI 0-21 and EN 50549-1.
The new product offers rated AC power from 800 W to 2.5 kW, depending on model, with an overload capacity of up to 200% for 10 seconds to handle high start-up loads. On the PV side, it supports an input of up to 5.76 kW across four MPPT trackers, with a maximum input current of 18 A and a PV voltage range of 20-55 V.
The nominal PV input voltage is 42.5 V, with a start-up voltage of 25 Vdc allowing operation at low irradiation. Depending on the variant, models range from 800 W to 2500 W, with higher configurations supporting up to 4400 W PV access power and input currents up to 10 A.
The system is paired with a 2.56 kWh LiFePO₄ battery, operates in a range of 44.8–57.6 V and supports a charge/discharge current of up to 50 A. Designed for scalability, it can be expanded to five units per cluster and eight clusters in parallel, reaching a total capacity of up to 102.4 kWh. In off-grid mode, up to three inverters can operate in parallel, delivering a combined power of up to 7.5 kW and allowing three-phase configurations.
Deye said the units are rated for up to 10,000 cycles. Efficiency reportedly reaches 96.5%, while the IP65-rated housing ensures reliable operation in demanding environments, the company said. The system supports AC coupling for easy integration with existing PV systems and allows AC bypass current of up to 30 A. Communication interfaces include Wi-Fi, Bluetooth and LoRa, allowing flexible monitoring and networking.
Smart energy management is done via Deye cloudwhich provides real-time monitoring, load forecasting and dynamic energy planning, along with time-of-use optimization and intelligent control via Deye Copilot. Users can monitor and adjust system settings via mobile devices, tablets or desktops, improving visibility and control over energy flows.
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