CHARGING SYSTEM - BATTERY
G-10flowchartBATTERY - Inspection - Battery discharge test
WARNING
Hydrogen gas is produced during normal battery operation. A battery-related explosion can cause serious injury. Keep all flames (including cigarettes), heat, and sparks away from the top and surrounding area of open battery cells.
CAUTION
To prevent damage to electrical components or the battery, turn all accessories off and stop the engine before performing maintenance or recharging the battery.
Battery discharge test
1
Measure open circuit voltage of battery with a digital voltmeter capable of reading 0.01V
Above 12.4V
return to step 3
Below 12.4V
2
Quick charge for 30 minutes and recheck voltage
Below 12.4V
Replace battery
Above 12.4V
3
Apply test load (see test load chart) to battery using a battery load tester. Record battery positive voltage after 15 seconds; is voltage more than specification?
No
same as step 2
YES
Battery OK
Test load
50D20L
Load (A)150
55D23L
Load (A)180
65D23L
Load (A)165
Battery positive voltage with load
21°C {70°F}
Minimum voltage (V)9.6
15°C {60°F}
Minimum voltage (V)9.5
10°C {50°F}
Minimum voltage (V)9.4
4°C {40°F}
Minimum voltage (V)9.3
-1°C {30°F}
Minimum voltage (V)9.1
-7°C {20°F}
Minimum voltage (V)8.9
-12°C {10°F}
Minimum voltage (V)8.7
-18°C {0°F}
Minimum voltage (V)8.5