Dodge 2004 Ram SRT-10 - Manual (Page 228)

Check the ventilation hose for indication of damage or
plugging deposits. Replace if necessary.
Maintenance Free Battery
The top of the maintenance free battery is permanently
sealed. You will never have to add water, nor is periodic
maintenance required.
To determine the battery charge, check the battery test
indicator (if equipped) on top of the battery. If the test
indicator (if equipped) appears light or yellow, replace
the battery.
228 MAINTAINING YOUR VEHICLE