The HSI PLUS Series Hybrid Solar Inverter is our upgraded low-frequency toroidal all-in-one solar power unit. It is designed for use in small residential backup and off-grid energy projects. This HSI PLUS Series Hybrid Solar Inverter offers two mature models: The HSI-PLUS-102 (1000W) and HSI-PLUS-122 (1200W) models have been developed to meet the low-power energy demands of household and mobile applications. This product has been built with a reliable toroidal transformer. This delivers triple surge power of up to 3000W and 3600W separately. This makes it suitable for driving small inductive loads, such as mini refrigerators and water pumps. It outputs clean, pure sine wave 220VAC with an integrated AVR stabiliser, ensuring voltage fluctuations are maintained within ±3%. This effectively protects surveillance cameras, portable electronics and smart home devices, while its transfer efficiency exceeds 85%, minimising power waste and maximising solar yield. The rapid transfer time of under 5 milliseconds ensures uninterrupted power switching during sudden grid blackouts, thus guaranteeing the continued operation of essential loads.
This integrated machine combines a 15A adjustable AC charger and high-current MPPT solar charger, supporting PV open circuit voltage up to 100VDC and flexible PV power matching for 12V and 24V battery systems. The product fully supports Gel, SLA, AGM and LiFePO4 lithium batteries, equipped with 60-second delayed overcharge protection to avoid battery overheating and extend battery lifespan. The product offers five customisable working modes, including mains priority, ECO, battery priority, unattended and generator mode, to adapt to all off-grid and grid-backup usage habits. Optional WiFi remote monitoring, paired with a mobile app and RS485 communication, allows users to check real-time system data remotely at any time.
The unit's compact yellow metal housing weighs 11 kg, and it operates steadily from 0 °C to 55 °C under 0-95% non-condensing humidity. It is widely applied to rural off-grid cabins, home emergency backup power, RV camping solar systems and tiny house energy storage kits. The clear LCD screen provides real-time monitoring of PV generation and battery SOC levels.