26 Static Force Test26.1 The purpose of this test is to determine if the enclosure has sufficient strength to safely withstand a static force that may be applied to it.26.2 The enclosure of a fully charged DUT (MOSOC per 6.1) shall withstand a steady force of 250 N ±10 N for a period of 5 s, applied in turn to the top, bottom and sides of the enclosure fitted to the DUT, by means of a suitable test tool providing contact over a circular plane surface 30 mm (1.2 inch) in diameter. However, this test is not applied to the bottom of an enclosure having a mass of more than 18 kg (39.7 lbs). If the DUT is operational after completion of the application of the static force, it shall be subjected to a discharge and charging cycle in accordance with the manufacturer’s specifications. An observationperiod per 6.5 is then conducted.26.3 If deemed necessary (i.e. due to design of system and anticipation of venting of cells), one of thedetection methods outlined in Section 7 shall be used to detect the presence of combustibleconcentrations. If required based upon system design or installation, venting of toxic releases shall becontinuously monitored during the testing per Section 11