Designed for heavy-load commercial and large-scale residential solar storage, the FSI series offers unparalleled power performance. The FSI-602 6000W 48V is the high-power flagship model in the FSI range. With stable rated power of 6000W and surge power of 18000W, it can support heavy electrical equipment in large homes and light machinery in workshops, making it ideal for big villas, rural agricultural stations and small off-grid commercial stores.

This flagship model has two major advantages: an ultra-large PV power bearing capacity and four flexible energy management modes. It can accept a PV array of up to 2800W under a 48V battery voltage and is compatible with expansive rooftop solar setups, maximising self-generated solar power and reducing utility bills. The four switchable operating modes (mains priority, energy saving, battery priority and unattended mode) can be adapted to suit different usage habits, allowing users to customise the power supply logic based on local sunlight and grid conditions.

The 4 ms UPS transfer speed ensures there is no interruption to critical loads during sudden blackouts, while the built-in AVR stabiliser rectifies wide-range fluctuating grid voltage from 165 V to 275 V AC. It supports all mainstream battery chemistries, including LiFePO4 lithium batteries, and has a dedicated DC charge voltage for 48 V packs to extend battery cycle life. The toroidal transformer brings over 85% transfer efficiency, cutting long-term operating costs. This FSI inverter provides a distortion-free, pure sine wave output to protect sensitive electronics and has a built-in LCD screen that displays all operating data for easy maintenance. This flagship FSI unit combines supreme power capacity and intelligent control to become the optimal solar storage solution for heavy-load scenarios.