2005 Polaris Sportsman 400/500 Service Manual, Page 288Get this manual
ELECTRICAL 4Install clear battery vent tube from vehicle to battery ventWARNING: Vent tube must be free from obstructions and kinks and securely installedIf not, battery gases could accumulate and cause an explosionThe vent tube should be routed away from frame and body to prevent contact with electrolyteAvoid skin contact with electrolyte, as severe burns could resultIf electrolyte contacts the vehicle frame, corrosion will occur5Reinstall the holder strap
Battery Hydrometer (PN 2870836)
Detail A
1.15 1.20 1.25 1.30
CONVENTIONAL BATTERY TESTING
Whenever service complaint is related to either the starting or charging systems, the battery should be checked firstFollowing are three tests which can easily be made on battery to determine its condition: OCV Test, Specific Gravity Test and Load TestState of charge