Yamaha XVS6501997, Service Manual

Page: 95 / 327

3-39
Relationship between open-circuit
voltage and charging time at 20
_
C
Open-circuit voltage
Charging time (Hours)
D This varies depending on the temperature, the state of
charge in battery plates and the electro lyte level.
Open-circuit voltage (V)
18
Condition of charge in battery (%)
Ambient
temperature 20
_
C
Open-circuit voltage (V)
17
16
15
14
13
12
11
10
0 10 20 30 40 50 60
Charging Ambient temperature
20
_
C
Check the Open-circuit voltage
Time (Minutes)
BATTERY INSPECTION
INSP
ADJ
*****************************************************
CAUTION:
D
Check the condition of the battery using the
following charts.
Example:
D
Open-circuit voltage = 12.0V
D
Charging time = 6.5 hours
D
Charge condition of the battery = 20 X 30%
D
Charging method for MF batteries
D
If it is impossible to set the standard
charging current, be careful not to over-
charge.
D
When charging the battery, be sure to re-
move it from the motorcycle. (If charging
has to be done with the battery mounted
on the motorcycle, be sure to disconnect
the wire at the negative terminal.)
D
Never remove the sealing caps of an MF
battery.
D
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.)
D
Before removing the clips from the bat-
tery terminals, be sure to turn off the char-
ger’s power switch.
D
The open-circuit voltage variation for the
MF battery, after charging, is shown be-
low. As shown in the figure, the open-cir-
cuit voltage stabilizes about 30 minutes
after charging has been completed.
Therefore, wait 30 minutes after charging
is completed before measuring the open-
circuit voltage.