Buy the lowest cost 50kW solar kit priced from $1. This Off-Grid Solar System Kit includes 48V 100Ah LiFePO4 batteries, 540W Monocrystalline Solar Panels, and 6500W Hybrid Solar Inverters equipped with a 120A MPPT Solar Charge Controllers. It is perfect for RVs, off-grid cabins, or residential homes. Setup is simple, quick, and easy. 05KW of solar with ninety one 550W Bifacial Mono Solar Panels. Battery kits include a number of options from OMO's outstanding Freedom Series lineup. These systems are designed for outdoor commercial/industrial (C&I) applications, integrating lithium iron phosphate (LFP) battery technology with advanced energy management. DC Input. $ 58,999. Shinefar solar advanced production facilities span over 35000m2 in Huzhou, Zhejiang which with an annual production capacity of 3GW.