AES LiFePO4 Solar Stationary Battery Discover® Advanced Energy System (AES) LiFePO4 Lithium solar batteries offer bankable performance and the lowest cost of energy storage per kWh. AES LiFePO4 Lithium batteries are manufactured with the highest-grade LiFePO4 cells and feature a proprietary high peak surge and transient voltage hardened BMS that delivers superior peak power, lightning fast charge and discharge rates and LYNK Solar Gateway functionality for plug-and-play closed loop integration