Recently replaced the battery in my 2010 as well.
FWIW, Ford installs a "Medium Duty" rated battery in the SHO's (from the factory).
I replaced it with a Motorcraft "Max" battery.
Although my old one never left me stranded, & nor did I need a jump, I know that to go anything beyond 3yrs on a battery nowadays, is pushing it.
Especially given all of the electrical techno gadgets designed in, and used in, these cars.
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