Kubota ZD1011-AU, Operator'S Manual

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59 MAINTENANCE
A Mishandling the battery shortens the service life and
adds to maintenance costs.
The original battery is maintenance free, but needs
some servicing.
If the battery is weak, the engine will be difficult to start
and the lights will be dim. It is important to check the
battery periodically.
A
When exchanging an old battery for a new one, use
battery of equal specification in table below.
(For non-accessible maintenance-free type batteries.)
Maintenance-free, non-accessible batteries are designed
to eliminate the need to add water. Yet the volume of
electrolyte above plates may eventually become depleted
due to abnormal conditions such as high heat or improper
regulator setting. Use a voltmeter to check the state of
charge. (See reference chart below to determine if
charging is necessary.)
C
How to read the indicator
Check the battery condition by reading the indicator.
C Battery Charging
To avoid serious injury or death:
A
When the battery is being activated, hydrogen
and oxygen gases in the battery are extremely
explosive. Keep open sparks and flames away
from the battery at all times, especially when
charging the battery.
To avoid serious injury or death:
A
When disconnecting the cable from the battery,
start with the negative terminal first. When
connecting the cable to the battery, start with
the positive terminal first.
A
Never check battery charge by placing a metal
object across the posts.
Use a voltmeter or hydrometer.
1. To slow charge the battery, connect the battery
positive terminal to the charger positive terminal and
the negative to the negative, then charge for at least 1
hour at 4.5 amperes.
2. A boost charge is only for emergencies. It will partially
charge the battery at a high rate and in a short time.
When using a boost-charged battery, it is necessary to
recharge the battery as early as possible.
Failure to do this will shorten the battery's service life.
3. When the specific gravity of electrolyte is between
1.27 and 1.29 the charging is completed.
Battery
Type
Volts
(V)
Reserve
Capacity
(min)
Cold
Cranking
Amps
Normal
Charging
Rate(A)
51R 12 80 430 4.5
Battery voltage Reference state of charge
12.6 100% (Full charge)
12.4 75%
12.2 50%
12.0 25%
11.8 0%
State of indicator display
Green
Specific gravity of electrolyte and quality of
electrolyte are both in good condition.
Black Needs charging battery.
White Needs replacing battery.
(1) Battery
(2) Ground cable
(3) Indicator (+): Positive terminal
(-): Negative terminal