Introducing YUNFAN's 51.2V 300Ah 400Ah Residential Lithium Ion Battery, a reliable and efficient power source for diverse residential applications, featuring CE,ROHS,MSDS,UL certifications, RS485/CAN communication, pure sine wave form and 50Hz/60Hz autosensing frequency range, ideal for backup power, solar storage, commercial use, off-grid systems, EV charging stations and grid stabilization, Welcome to visit our website!