Visual Inspection
WARNING: This page is about a different car, the 2004 Suzuki Aerio, 2003 Suzuki Aerio, and 2002 Suzuki Aerio. However, it is still accessible from the selected car via links, so may be relevant.
Check for obvious damage, such as cracked or broken case or cover, that could permit loss of electrolyte. If obvious damage is noted, replace battery. Determine cause of damage and correct as needed.