2002 Subaru Forester Owner's Manual - Page 341

D To lessen the risk of sparks, remove rings, metal watchbands, and other metal jewelry. Never allow metal tools to contact the positive battery terminal and anything connected to it WHILE you are at the same time in contact with any other metallic portion of the vehicle because a short circuit will result. D Keep everyone including children away from the battery. D Charge the battery in a well-ventilated area. D Battery posts, terminals and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and reproductive harm. Wash hands after handling. CAUTION Never use more than 10 amperes when charging the battery because it will shorten battery life. B Checking the fluid level Cap Upper level Lower level OM-H1048 It is unnecessary to periodically check the battery fluid level or periodically refill with distilled water. However, if the battery fluid level is below the lower level, remove the cap. Fill to the upper level with distilled water. 11-32