35
Battery Charger
Names and Functions of Parts
•
The XA4 charger (JWC-2) is a dedicated charger made specifically for the XA4 bat-
tery, and is designed to extend the service life of the battery and to enable faster
charging.
Refresh switch
Exhaust port
Contact points (4 locations)
Battery insertion port
Grip
Display lamps (2 locations)
Intake ports (2 locations)
AC cord (detachable type)
Function 1. 4-stage charging method
1
Preliminary charging: If the battery voltage is unusually low, a low current level is used when
charging is first begun.
2
Fast charging:
Charging is carried out in approximately 2.5 hours, starting from a com-
pletely discharged battery.
3
Follow-up charging: When the battery is warm from being charged, charging is done at a low
current level following fast charging, to supplement the amount of charging.
4
Trickle charging:
Charging is done with a tiny amount of current following methods
2
and
3
,
to compensate for the amount consumed through self-discharging.
NOTE:
•
If the battery has just been shipped, or if it has been deeply discharged, charging takes approximately
120 to 130% longer than ordinary charging.
•
If the battery was charged when hot, and follow-up charging was done in order to supplement the
ordinary charging, charging may take up to 1.5 hours longer than ordinary charging in some cases.
If this happens, the uppermost stage of the capacity display (the fully-charged side) may flash for a
longer time period because of the longer charging time.
