PPRuNe Forums - View Single Post - 787 Batteries and Chargers - Part 1
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Old 19th Mar 2013, 08:24
  #1032 (permalink)  
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Join Date: Nov 2000
Location: Grobelling through the murk to the sunshine above.
Age: 57
Posts: 562

The APU battery is more significant, since it appears that, regardless of other power sources, loss of the APU battery will render the APU inoperable. I would imagine that taking off with the APU battery inop would not be allowed.
Not so, the APU Battery is a Cat C MEL item; without it the machine can fly, as long as the Engine Generators are working normally, but is restricted to 180 mins ETOPS.
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