July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Starting System & Charging System (WRX): Battery: Inspection: Appearance

Check the battery case, top cover and terminal posts for dirt or cracks, and perform the following work as necessary.

Clean the battery with water and wipe with a dry cloth.
Apply a thin coat of grease on the terminal posts to prevent corrosion.

Check

Normal → Go to ELECTROLYTE LEVEL below.
Abnormal → Replace the battery.