It's hard to design for outlier data. This is the most unusual search in modern aviation history. It is the outlier. With a couple of exceptions, all crash zones are found within days.
What makes you think that increasing the battery by a couple of months will deal with the next extraordinary case? What you're suggesting isn't even an order of magnitude more, though 30 days is already a couple of orders of magnitude more than what is needed 98% of the time.
What makes you think that increasing the battery by a couple of months will deal with the next extraordinary case? What you're suggesting isn't even an order of magnitude more, though 30 days is already a couple of orders of magnitude more than what is needed 98% of the time.
Hindsight is 20/20.