APU battery usage in BOS
Hi,
TURIN,
JAL APU at BOS was started by AC or from battery?
A model i am imagining is:
1) Batteries discharged (for many possible reasons) more than expected
2) Thermal aspects (cell heating, improper thermal cell monitoring, inadequate battery case, inadequate cell spacing) created conditions for thermal runaway (a positive feedback that in the end destroy the device)
So, my question is because ANA 787 main battery very probably was being recharged (hi curr.)when event started.
BOS JAL APU battery probably was also being recharged? (high curr.)
My feeling, was NOT.