● Supports lead acid battery and li-ion battery connections. ● With a dual activation function when the li-ion battery is dormant; either mains/photovoltaic power supply access can trigger the activation of the li-ion battery. ● Supports two solar inputs and simultaneous tracking of two solar maximum power charging/carrying capacity functions. ● Dual MPPT with 99.9% efficiency and maximum 22A current in a single circuit, perfectly adapted to high power modules. ● 4 charging modes are available: solar only, mains priority, solar priority, and mixed mains/PV charging. ● With the time-slot charging and discharging setting function, you can set the time period for cutting in/ out of mains charging and switch the time period between battery discharging and mains bypass power supply mode. ● With two output modes of utility bypass and inverter output, with uninterrupted power supply function. ● LCD large screen dynamic diagram design, easy to understand system data and operating status. ● 360° protection with complete short circuit protection, over current protection, over under voltage protection, overload protection, backfill protection, etc.