I left the interior map lights (driver & passenger side lights) on for about 30 hours, depleting the batter in my Honda Fit. I could barely see the lights on. Fortunately, at least one towing service had a service vehicle that could get into the underground where it was parked. After getting boosted, I drove it around with high RPMs, mostly on the highway, for about an hour, interspersed with normal city RPMs for errands (though I tried to keep the RPMs high even then).
(1) How long does it take for a typical OEM sub-compact battery to be charged? There is a color indicator that shows when the batter is in good shape, when it needs fluid, and when it needs charging. After the total of about 1 hour of high RPMs, the color indicator still says the battery needs charging. This post mentions 2 to 5 hours, wondering if this ballpark range can be narrowed for a Honda Fit.
(2) The combined audio/clock system got reset, as evidenced by the nonsensical time on the clock. When I turned on the radio, it asked to enter a code. A quick browse through the audio and battery changing sections of the manual reveals nothing about a code. What is this code?