1995 Johnson/Evinrude Outboards 9.9, 15 four-stroke Service Manual, Page 183Get this manual

1995 Johnson/Evinrude Outboards 9.9, 15 four-stroke Service Manual, Page 183

Battery Charging Boost charge 12-volt batteries at 50 amperes for 20 minutes (1000 ampere minuteslIf the charger will not
specific gravity readings with battery hydrometerIt is suggested that specific gravity readings and checking for replacement
of water be made every two weeksIf the battery has been standing for 30 days, recharge the battery before placing it into
service to ensure reliable startingCharge battery to the specific gravity recommended by the battery manufacturerCheck the
specific gravity of the battery electrolyte with battery hydrometer, preferably one that has built-in thermometer and correction
chartNo other method should be used to determine the charge condition of batteryNote also that hydrometer reading is not
accurate if water has been recently added, because the water has not had chance to mix with the electrolyteThe proper water
level should be maintained at all timesIf water is added in freezing weather, the battery should be charged to full charge
at onceUse pure distilled water or water approved for battery use only to replace water lost through evaporationNever add