738 batt discharge time

[ogorek]

Hey,

Do you guys know how long it would take to discharge the batteries on ground by leaving the switch on BATT? (the whole equipment off)

[radken]

I may be mistaken, but believe the discharge time is completely dependent on field elevation where parked and whether the solar trickle charging panels are selected "on." Also, it is dependent on type of aircraft and actual fuel load.

Sorry- Don't know specifically about 738's. Above based on what I know about older Boeing products and some MD types.