Subaru 2005 Impreza Owner's Manual page 445

Maintenance and service
2
3
1) Cap
2) Upper level
3) Lower level
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 dis-
tilled water.
Never use more than 10 amperes when charg-
ing the battery because it will shorten battery
11-64
life.
1
UGB117BB