Hoymiles’s HiBattery 4020 X battery is designed for direct DC-coupling with PV modules
The company’s HiBattery 4020 AC battery is engineered for AC-coupling with existing PV systems
These products will be commercially available across Europe from June 2026
Module-level power electronics (MLPE) and micro storage systems provider Hoymiles launched its latest HiBattery 4020 Series micro storage systems for the plug-in home storage market.
The new HiBattery 4020 X battery is designed for DC-coupling with residential rooftop PV modules. It features 4 MPPT channels to accommodate up to 4 kW of PV capacity and 4 kWh of lithium iron phosphate (LFP) battery capacity. Equipped with a built-in 2,500 W hybrid inverter, the excess solar generation after captive consumption is stored in the battery. In the event of a grid outage, this stored energy can provide emergency backup power to home loads, such as lights, fans, TV, and AC, for a certain duration. It can also work as an off-grid storage system for remote houses without a reliable grid supply. The product features 2 separate ports: on-grid (AC) and off-grid (AC).
For AC-coupling with an existing residential PV array, the company has released the HiBattery 4020 AC series battery. Featuring 4 kWh LFP battery units and a 2,500 W inverter, this micro storage system stores excess solar generation, maximizing solar harvesting.
Both products are designed to expand their capacities to up to 16 kWh by connecting 4 identical units in parallel, meeting the growing demands of prosumers. According to the company, these 520 × 384 × 199 mm (W × H × D) micro storage systems can be quickly shifted and plugged in with a home power outlet within 1 minute.
Besides performance and installation, the company emphasized the product's operational safety, a critical factor for any homeowner. Without sharing details, the company’s press release says that the inside battery management system (BMS) features up to 42 safety functions. It has an aerosol-based fire suppression mechanism to prevent fire propagation. It also features a pressure-release valve to vent excess pressure buildup.
On the operational front, these systems have integrated the Hoymiles AI Energy Management System (EMS), built on an in-house AI model trained with over 30 million parameters. Unlike standard systems that rely on a day-based energy forecast schedule, this EMS recalculates the schedule every 3 hours according to electricity tariffs, weather forecasts, and household consumption patterns. It continuously adjusts the charging and discharging of the micro storage system to capture the lowest possible electricity tariff during charging.
This home plug-in microstorage battery series will be commercially available across Europe from June 2026.