Greensmaster 3320/3420Page 6 -- 82Electrical System
Battery Pack Service
Clean the battery pack with clean water and a towel. Do
not use solvents or chemicals to clean the battery pack.
Whentestingbatteries inyour Greensmaster,itis impor-
tant to test all four (4) individual batteries. Proper perfor-
mance of the machine depends on all batteries being in
good condition. Testing will determineif one (ormore) of
the batteries needs to be replaced.
Asimplebatterytestcanbedoneusingamultimeterto
perform a voltage test of each of the batteries in the bat-
terypack. Measurethe battery voltagewith themultime-
ter and record battery voltage. The measured voltage
can be used to determine battery state of charge. If the
voltage of any of the batteries varies by more than 10%,
it indicates a problem with the lower voltage battery.
If the battery pack system voltage drops below 50VDC
due to storage, age or malfunction, battery inspection
and/or charging may be necessary. The batteries may
be individually charged with a 12V charger rated for op-
eration with absorbed glass mat (AGM), valve regulated
lead acid batteries. The vo ltage of this battery type is
slightlylower thanflooded lead acidbatteries.Maximum
charge current should be limited to 2.4 amps.
A battery load tester can be used to test individual bat-
teries.Many locallyavailablebattery loadtesters donot,
however, have any adjustment on the load that is put on
the battery. Results received from using load testers
should follow the recommendations of the load tester
manufacturer.
Battery Pack Storage
There are no special procedures or precautions for bat-
tery storage less than six (6) months. However, storage
above 70
o
F(21
o
C) will significantly reduce battery life.
Cold temperatures are not an issue during storage and
actually will reduce the battery self--discharge rate. To
obtain maximum battery life, do not store the battery
pack in a discharged state.
If storage is anticipated for longer than six (6) months,
inspection and/or charging is recommended at six (6)
month intervals. Battery charging is recommended
whenever the battery pack voltage drops below 50VDC
or if voltage of an individual battery drops below
12.5VDC.
