Samduo launches residential AC-coupled plug-in storage systems

Chinese energy storage provider Samduo, a unit of Shenzhen-based manufacturer Hubei Yixing Intelligent Equipment, has launched two new battery lines for residential applications at the Solar Solutions International trade show in the Netherlands.

The company said the Nex E6000 and Nex E6000H series will be available for sale in Europe starting in May. Pricing information is not currently known.

“The Netherlands is preparing to phase out net metering by 2027, prompting around 500,000 households to upgrade to digital meters,” the company said in a statement. “Meanwhile, growing incentives, including VAT exemptions in Germany, are expected to further accelerate demand for AC‑coupled, plug-in solar storage solutions.”

Both models are AC‑coupled, requiring no direct DC connection to PV arrays, and support plug‑and‑play installation, which Samduo describes as a key advantage for retrofits and balcony-oriented living spaces.

The Nex E6000 integrates a 6 kWh lithium-ion battery, battery management system (BMS), and inverter into an ultra‑slim unit just 11.9 cm deep. It reportedly supports up to 8,000 life cycles and delivers 2,600 W bidirectional rapid charging, enabling efficient energy storage and discharge for daily use and peak‑shaving applications, according to the manufacturer.

The Nex E6000H expands household energy management capabilities with an ultra-fast one-minute setup and a smart energy management system, which facilitates networked energy sharing and coordination across up to 15 devices, totalling 90 kWh, via a single hub.

Both systems are IP65-rated and support Open API integration with popular European smart-home and energy platforms such as Shelly, HomeWizard, and EverHome, Samduo added.

The company claims the systems can deliver estimated annual savings of €562.30 ($648.50) based on a 4 kW residential PV array paired with a 6.03 kWh battery, assuming typical mid-latitude European solar conditions.

Under these assumptions, a 4 kW PV system would generate roughly 16 kWh per day, or 5,840 kWh annually. With a usable battery capacity of 5.43 kWh and assuming 90% depth of discharge, the storage system could supply about 1,980 kWh of energy per year. In this scenario, the base PV self-consumption rate without storage is 35%, rising to 75% with the battery installed.