2001 Polaris Sportsman 400-500 DUSE and H.O. Service Manual, Page 347Get this manual
ELECTRICAL
SPECIFIC GRAVITY TEST
A tool such as Battery Hydrometer (PN 2870836) can be used to measure electrolyte strength or specific gravityAs the battery goes through the chargedischarge cycle, the electrolyte goes from heavy (more acidic) state at full charge to light (more water) state when dischargedThe hydrometer can measure state of charge and differences between cells in multi-cell batteryReadings of 1.270 or greater should be observed in fully charged batteryDifferences of more than .025 between the lowest and highest cell readings indicate need to replace the batteryOPEN CIRCUIT VOLTAGE State of charge 100 Charged 75 Charged 50 Charged 25 Charged Charged Conventional Lead-acid 12.60V 12.40V 12.10V 11.90V less than 11.80V SPECIFIC GRAVITY State of charge 100 Charged 75 Charged 50 Charged 25 Charged Charged Conventional lead-acid 1.265 1.210 1.160 1.120 less than 1.100 YuMicron Type 1.275 1.225 1.175 1.135 less than 1.115 YuMicron Type 12.70V 12.50V 12.20V 12.0V less than 11.9V Polaris PN 2870876
Detail A