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PG BATTERY PG-63 < BASIC INSPECTION > C D E F G H I J K L B A O P N Charging The Battery CAUTION: • Never “quick charge” a fully discharged battery. • Keep the battery away from open flame while it is being charged. • When connecting the charger, connect the leads first, then turn on the charger. Never turn on the charger first, as this may cause a spark. • If battery electrolyte temperature rises above 55 °C (131 °F), stop charging. Always charge battery at a temperature below 55 °C (131 °F). Charging Rates (Standard Charge) Charging Rates (Quick Charge) NOTE: The ammeter reading on your battery charger will automatically decrease as the battery charges. This indi- cates that the voltage of the battery is increasing normally as the state of charge improves. The charging amps indicated above refer to initial charge rate. • If, after charging, the specific gravity of any two cells varies more than 0.050, the battery should be replaced. 4 (40) −0.016 −1 (30) −0.020 −7 (20) −0.024 −12 (10) −0.028 −18 (0) −0.032 Battery electrolyte temperature [ °C (°F)] Add to specific gravity reading Corrected specific gravity Approximate charge condition 1.260 - 1.280 Fully charged 1.230 - 1.250 3/4 charged 1.200 - 1.220 1/2 charged 1.170 - 1.190 1/4 charged 1.140 - 1.160 Almost discharged 1.110 - 1.130 Completely discharged Approximate charge condi- tion Charge current (A) Charge time (h) Fully charged 7 2 3/4 charged 2.5 1/2 charged 5 1/4 charged 7.5 Almost discharged 9 Completely discharged 10 Approximate charge condi- tion Charge current (A) Charge time (h) Fully charged — — 3/4 charged 16 0.5 1/2 charged 33 1/4 charged Almost discharged Completely discharged — — |