Therefore, a 100 kWh battery would cost approximately $14,000. For remote areas and small. . Growatt 100kWh APX Commercial LiFePO4 Battery is backordered and will ship as soon as it is back in stock. - Hurry while stocks last! This item is a recurring or deferred purchase. This system uses advanced and safe lithium iron phosphate (LiFePO4) battery technology to provide you with reliable, efficient and long-lasting energy management. . This high-performance LiFePO4 (Lithium Iron Phosphate) battery pack is available in 60kWh and 100kWh capacities, designed for medium to large-scale energy storage needs.