At which temperature should the SCBA's battery module be checked for readiness before storage?

The SCBA's battery module should be checked for readiness at 0°F because this temperature is significant in ensuring that the equipment is functional in extreme cold conditions. Cold temperatures can adversely affect battery performance, so verifying readiness at this temperature ensures that the battery will operate effectively in low-temperature environments. This practice is particularly important in emergency response scenarios where conditions may vary widely, and reliable equipment is critical for safety. By conducting battery checks at this lower threshold, users can confirm that the SCBA will perform adequately when needed, thus maintaining operational readiness and safety standards in the field.