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There is more info on this topic in other threads, and even more in the old CPA forums, but most of it boils down to this: Tom Carr recommended removing the alt restart battery pack and placard in the system inop with a logbook entry. His theory is that pressing that button releases unregulated current from the alternators into the system and if a diode is failed, could start an electrical fire or explode the batteries. My airplane was missing the battery pack on delivery, and I’ve chosen to just placard it inop and move on.
I’ve run the overvolt test and it went fine, and twice I’ve turned off an ALT and back on with no issues (all as ground tests). I mitigate the risk of not having the battery pack by limiting my flight in Hard IFR.
-LJ
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