Yamaha YP250 Mobility Scooter User Manual


 
3-39
BATTERY INSPECTION
INSP
ADJ
Open-circuit voltage (V)
Condition of charge in battery (%)
Ambient
temperature
20_C (68_F)
Open-circuit voltage (V)
Charging
Ambient temperature
20_C (68_F)
Check the Open-circuit voltage
Time (Minutes)
*****************************************************
CAUTION:
D Check the condition of the battery using the
charts.
Example:
Open-circuit voltage = 12.0 V
Charging time = 6.5 hours
Charge condition of the battery = 20 30%
5. 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 below.
As shown in the figure, the open-circuit
voltage stabilizes about 30 minutes after
charging has been completed.
D Therefore, wait 30 minutes after charging
is completed before measuring the open-
circuit voltage.