The AA Rechargeable Battery Cells are Lithium Iron Phosphate (LiFePo4) batteries available in various capacities, including 3.2V 50Ah, 100Ah, 150Ah, 200Ah, and 280Ah. These LiFePo4 batteries offer a range of options to meet different power needs and are rechargeable, making them suitable for various applications, from small electronic devices to energy storage systems, where long-lasting and reliable power sources are essential.