BatteryTest(OpenCircuitTest)(continued)
3.Accessthebatteries(seeBatteryRemoval(page6–140)andBattery
Installation(page6–142))anddisconnectthebatterytobetestedasfollows
(Figure184):
A.12Voltsystembatteries:Disconnectthepositive(+)redbatterycable
fromeitherofthe12Voltsystembatteries.
B.24Voltcoolingfansystembatteries:Disconnecteitherendofthered
jumpercablebetweenthetwo(2)24Voltsystembatteries.
Note:Thistestprovidesarelativeconditionofthebattery.Loadtestingof
thebatterywillprovideadditionalandmoreaccurateinformation(seeBattery
Service(page6–139)).
4.Useamultimetertomeasurethevoltagebetweenthebatteryterminalsof
anyisolatedbattery.SetmultimetertotheDCvoltssetting.Thebattery
shouldbeatatemperatureof16to38ºC(60to100ºF).Connectthepositive
(+)meterleadtothepositivebatterypostandthenegative(−)meterleadto
thenegativebatterypost(seebelowtable).
VoltageMeasured
BatteryChargeLevel
12.68V(orhigher)Fullycharged(100%)
12.45V
75%charged
12.24V
50%charged
12.06V
25%charged
11.89V(orlower)0%charged
ChargingSystemTests
g288426
Figure185
1.12Voltsystembatteries
2.24Voltcoolingfanbatteries
Groundsmaster
®
5900&5910
Page6–43
ElectricalSystem:InfoCenterDisplay
16227SLRevB
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