Toro Groundsmaster 4500-D Series - Electrical System Quick Checks; Battery Test (Open Circuit); Charging System Test

ElectricalSystemQuickChecks
BatteryTest(OpenCircuit)
Useamultimetertomeasurethevoltagebetweenthebatteryterminals.
SetmultimetertotheDCvoltssetting.Thebatteryshouldbeatatemperature
of16to38ºC(60to100ºF).Theignitionkeyshouldbeoffandallaccessories
turnedoff.Connectthepositive(+)multimeterleadtothepositivebatterypost
andthenegative(−)multimeterleadtothenegativebatterypost.Themultimeter
willdisplaybatteryvoltage.
Note:Thistestprovidesarelativeconditionofthebattery.Loadtestingofthe
batterywillprovideadditionalandmoreaccurateinformation.
VoltageMeasured
BatteryChargeLevel
12.68V(orhigher)Fullycharged(100%)
12.45V
75%charged
12.24V
50%charged
12.06V
25%charged
11.89V
0%charged
ChargingSystemTest
Thisisasimpletestusedtodetermineifachargingsystemisfunctioning.Itwill
tellyouifthechargingsystemhasanoutput,butnotitscapacity.
Note:TheInfoCenterdisplaycanbeusedtoidentifybatteryvoltageduring
machineoperation.
UseadigitalmultimetersettoDCvolts.Connectthepositive(+)multimeterlead
tothepositivebatterypostandthenegative(−)multimeterleadtothenegative
batterypost.Keepthetestleadsconnectedtothebatterypostsandrecord
thebatteryvoltage.
Note:Uponstartingtheengine,thebatteryvoltagewilldropandthenshould
increaseoncetheengineisrunning.
Note:Dependingupontheconditionofthebatterychargeandbattery
temperature,thebatteryvoltagewillincreaseatdifferentratesasthebattery
charges.
Starttheengineandrunathighidle.Allowthebatterytochargeforatleastthree
(3)minutes.Recordthebatteryvoltage.
Afterrunningtheengineforatleastthree(3)minutes,batteryvoltageshouldbe
atleast0.50volthigherthaninitialbatteryvoltage.
Anexampleofachargingsystemthatisfunctioning:
Atleast0.50voltoverinitialbatteryvoltage.
InitialBatteryVoltage=12.30v
BatteryVoltageafter3MinuteCharge
=12.95v
Difference
=+0.65v
Groundsmaster
®
4500-D/4700-D
Page6–23
ElectricalSystem:ElectricalSystemQuickChecks
19245SLRevA