1999 Polaris PWC Genesis, Ficht, X-45 Service Manual, Page 231Get this manual
ELECTRICAL Battery Testing Specific Gravity Test
A tool such as the battery hydrometer can be used to measure electrolyte strength or specific gravityAs the battery goes through the charge-discharge 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 battery
Open Circuit Voltage
STATE OF CONVENTIONAL
CHARGE 100 Charged
75 Charged
LEAD-ACID 12.60V 12.40V
12.10V l'.90V less than 1'.80V
YUMICAON 12.70V
12.20V 12.0V less than 1' .9V
50 Charged 25 Charged Charged