a) a discharge for 1 hour at a curr

a) a discharge for 1 hour at a current, in amperes, of I = 5 In, b) immediately followed – by a recharge for 2 h and 55 min at a voltage depending on the battery technology with its related water loss level (see Table 2) with a maximum current in amperes being limited to Imax = 10 In (see 7.1.2), and – for 5 min at a constant current, in amperes, of I = 2,5 In (N,L,VL), – for 5 min at a constant current, in amperes, of I = 0,5 In (VRLA). 9.6.2.5 The test shall be terminated if the battery voltage drops below 10,50 V during the discharge prior to completion of the required number of cycles (see Clause 10). 9.6.2.6 When the cycling is over, the battery shall be placed in a cooling chamber with (forced) air circulation at a temperature of –18 °C ± 1 °C for a minimum of 20 h or until the temperature in one of the middle cells has reached –18 °C ± 1 °C. 9.6.2.7 The battery shall then be discharged after the end of the cooling period with a current 0,6 Icc. 9.6.2.8 After 30 s of discharge, the voltage across the battery terminals shall be measured. It shall not be less than 7,20 V. The discharge shall then be terminated.