The C-rate indicates the maximum discharge/load of a LiPo battery. To do this, the C-rate is multiplied by the nominal capacity. The result is the maximum current in amperes. 
Example: 4.0Ah (4000mAh) * 60C = 240 A
It should be noted, however, that different resistances (connectors, cables and especially the internal resistance) influence the current output, so that these values can never be reached. Our goal is to keep the internal resistances as low as possible in order to achieve maximum performance.