Yamaha FX Nytro FX10X, Service Manual

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INSP
ADJ
BATTERY INSPECTION
4. Remove:
• Battery
5. Inspect:
• Battery charge
Inspection steps:
• Connect a pocket tester to the battery terminals.
NOTE:
• The charge state of a MF battery can be checked
by measuring its open-circuit voltage (i.e., the
voltage when the positive terminal is discon-
nected).
• No charging is necessary when the open-circuit
voltage equals or exceeds 12.8 V.
• 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%
È
Open-circuit voltage (V)
É
Charging time (hours)
Ê
Relationship between the open-circuit voltage and
the charging time at 20 °C (68 °F)
Ë
These values vary with the temperature, the condi-
tion of the battery plates, and the electrolyte level.
Ì
Time (minutes)
Í
Charging
Î
Ambient temperature 20 °C (68 °F)
Ï
Check the open-circuit voltage.
Ð
Charging condition of the battery (%)
Positive tester probe
→
positive battery terminal
Negative tester probe
→
negative battery terminal