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Battery electrolyte temperature °C (°F) Add to specific gravity reading 4 (40) −0.016 −1 (30) −0.020 −7 (20) −0.024 −12 (10) −0.028 −18 (0) −0.032 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 CHARGING THE BATTERY NBSC0003S04 CAUTION: I Do not “quick charge” a fully discharged battery. I Keep the battery away from open flame while it is being I When connecting the charger, connect the leads first, then I If battery electrolyte temperature rises above 60°C (140°F), Charging Rates NBSC0003S0401 Amps Time 50 1 hour 25 2 hours 10 5 hours 5 10 hours Do not charge at more than 50 ampere rate. I If, after charging, the specific gravity of any two cells varies BATTERY How to Handle Battery (Cont’d) SC-6 |