LiTech Power develops and produces ESS (Energy Storage System) for solar system, off-grid and on-grid. Systems come with 12V/24V/48V 50Ah, 100Ah, 200Ah... different modules and support parallel connections, running well with most major inverters in the market. Please be noted LiTech only adopts brand-new class-A cells in the systems, unlike other competitors who play games on the deal by using refurbished ones. Please reach out to LiTech for a professional and safe system if you don't want to get your property/house burnt down.