1994 Johnson/Evinrude "ER" 9.9 thru 30 outboards Service Manual, Page 292Get this manual

1994 Johnson/Evinrude "ER" 9.9 thru 30 outboards Service Manual, Page 292

Battery Charging Boost charge 12-volt batteries at 50 amperes for 20 minutes (1000 ampere minutes)If the charger will not
by making specific gravity readings with battery hydrometerIt is suggested that specific gravity readings and checking for
replacement of water be made every two weeks If the battery has been standing for 30 days, recharge the battery before placing
it into service to ensure reliable starting Charge 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