cold batteries
on the classic B747, the APU battery was aft of the rear pressure baulkhead and was not in the warm pressurised zone, and had a heater mat underneath it to keep it warm, if too cold after a long flight and cold soaked a cold APU and a cold battery would make the starting of APU fail on taxi in
If batteries frozen should imagine they would not produce any amps output, and the case might split.
Last edited by mitzy69; 15th Nov 2007 at 21:59.
Reason: spelling