Basically: 10 hour rate, is 0.1C discharge termination voltage 10.5V, discharge time greater than or equal to 10 hours 20 hours rate, is 0.05C discharge termination voltage 10.5V, discharge time greater than or equal to 20 hours when the same battery, in the discharge rate multiplied by a 0.95 coefficient. That is to say: 20 hour rate discharge battery, 10 hour rate discharge then, 20 hours *0.5 times *0.95 coefficient =9.5 hours. (But this is only for the similar two gears, cross-gear to multiply the coefficient)