9.4 Charge acceptance test 9.4.1 The test shall be carried out on batteries which have been charged in accordance with 8.2.2 (vented batteries) or 8.2.4 (VRLA batteries). 9.4.2 The battery shall be placed in a water bath at a temperature of 25 °C ± 2 °C. The terminal base of the battery shall be at least 15 mm but no more than 25 mm above the level of the water. If several batteries are in the same water bath then the distance between them and also the distance to the walls of the bath shall be at least 25 mm. 9.4.3 The battery shall be discharged at a current Io: