This is EVE 280K V2 version which is standard Charge 1C 280Ampere and discharge 1C 280Ampere. There are another EVE 280K V3 version which is 0.5C 140Ampere Charge and 0.5C 140Ampere discharge. V2 EVE280K with higher charge discharge rate. V3 EVE280K with lower C rate but 5% higher real capacity than V2 EVE 280K. Just order the version you need in your application. EVE 280K V2 Real capacity around 297Ah. EVE 280K V3 Real capacity around 310Ah. Same Prices Grade A in same matched batch. Real capacity around 297Ah. New and no any bulging. Not cheaper and lower quanlity Grade B Cells. EVE 3.2V 280Ah Prismatic LiFePO4 cell. This battery is widely used in electric vehicles, electric motorcycles, solar power, energy storage, etc.