Bombardier SeaDoo 1998 factory shop manual, Page 233Get this manual
Section 08 ELECTRICAL SYSTEM Subsection 03 (CHARGING SYSTEM)
Unload Test Check charge condition using either hydrometer or multimeterWith multimeter, voltage readings appear instantly to show the state of chargeAlways respect polarityA fully charge battery will have reading of 12.6 VdcA hydrometer measures the charge of battery in terms of specific gravity of the electrolyteA fully charge battery will have specific gravity between 1.265 to 1.280Most hydrometers give true reading at 21C (70F)
This chart will be useful to find the correct readingELECTROLYTE TEMPERATURE 38 32 27 21 16 10 -1 EXAMPLE NO1
Temperature above 21C (70F): Hydrometer reading: 1.250 Electrolyte temperature: -1C (30F) Subtract .016 SpGrCorrected SpGris 1.234
OPERATION TO PERFORM .012 .008 .004 Add to the reading
F 100 90 80 70 60 50 40 30
correct reading .004 .008 .012 .016 Subtract from the reading
EXAMPLE NO2
Temperature above 21C (70F): Hydrometer reading: 1.235 Electrolyte temperature: 38C (100F) Add .012 SpGrCorrected SpGris 1.247