Yamaha 4TX-AE1, Service Manual

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3-54
INSPECTION
INSP
ADJ
16
15
14
13
12
11
10
5 6.5
10
100 75 50 30 25 20 0
0 10 20
30
40
11.5
12.0
12.5
13.0
17
18
10
11
12
13
14
(V)
50
60
Volt meter
Relationship between the open-circuit voltage
and the charging time at 20
_
C
Charging time (hours)
S
This varies depending on the temperature, the state of charge
in the battery plates and the electrolyte level.
Open-circuit voltage
Open-circuit voltage (V)
Ambient
temperature
20
_
C
Condition of the charge in the battery (%)
Open-circuit voltage (V)
Charging
Ambient temperature
20
_
C
Time (minutes)
Check the open-circuit
voltage
NOTE:
CAUTION:
1. Check:
S
Battery condition
Battery condition checking steps:
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Connect a digital voltmeter to the battery termi-
nals.
Tester (+) lead battery (+) terminal
Tester (–) lead battery (–) terminal
The charge state of an MF battery can be checked
by measuring the open-circuit voltage (i.e. the
voltage when the positive terminal is discon-
nected).
Open-circuit voltage Charging time
12.8 V or higher No charging is
necessary.
S
Check the condition of the battery using the fol-
lowing charts.
Example:
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Open-circuit voltage = 12.0 V
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Charging time = 6.5 hours
S
Charge condition of the battery = 20 30%
S
Charging method for MF batteries
Charging method
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If it is impossible to set the standard charging
current, be careful not to overcharge.
S
When charging the battery, be sure to remove
it from the motorcycle. (If charging has to be
done with the battery mounted on the motor-
cycle, be sure to disconnect the wire at the
negative terminal.)
S
Never remove the sealing caps of an MF bat-
tery,
S
Make sure that the charging clips are in full
contact with the terminal and that they are
not shorted together. (A corroded clip on the
charger may cause the battery to generate
heat in the contact area. A weak clip spring
may cause sparks.)