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INSP
ADJ
BATTERY INSPECTION AND CHARGING
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Relationship between the open-circuit voltage
and the charging time at 20 °C (68 °F)
(These values vary with the temperature, the
condition of the battery plates, and the electro-
lyte level.)
É
Open-circuit voltage
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Charging time (hours)
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Time (minutes)
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Charging condition of the battery
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Ambient temperature 20 °C (68 °F)
a
Charging
b
Check the open-circuit voltage.
5. Charge:
• Battery
(refer to the appropriate charging method
illustration)
WARNING
Do not quick charge a battery.
CAUTION:
• Never remove the MF battery sealing
caps.
• Do not use a high-rate battery charger
since it forces a high-amperage current
into the battery quickly and can cause
battery overheating and battery plate
damage.
• If it is impossible to regulate the charging
current on the battery charger, be careful
not to overcharge the battery.
• When charging a battery, be sure to
remove it from the machine. (If charging
has to be done with the battery mounted
on the machine, disconnect the negative
battery lead from the battery terminal.)
• To reduce the chance of sparks, do not
plug in the battery charger until the bat-
tery charger leads are connected to the
battery.
• Check the charge of the battery, as shown
in the charts and the following example.
Example
Open-circuit voltage = 12.0 V
Charging time = 6.5 hours
Charge of the battery = 20 ~ 30%
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