Panasonic WX-ST400 Operating Instructions Manual page 37

Phenomenon
I cannot charge the
microphone
(The [CHG] indicator
blinks)
The battery runtime is
short despite being
fully charged
Cause/measure
⿟ The battery inside the microphone may be dry-
cell battery or deteriorated rechargeable
battery.
¨ Make sure that the proper type of battery is
¨
inserted.
⿟ Almost empty rechargeable battery may be
incorrectly detected as dry-cell battery.
¨ Remove the microphone from the charger
¨
and insert it back in multiple times until the
battery is properly recognized.
⿟ Is the battery extremely hot?
¨ Check the battery temperature.
¨
⿟ Have you inserted the rechargeable battery?
¨ Make sure that you have inserted the
¨
rechargeable battery.
⿟ Is the battery inserted according to the correct
polarities? (Positive
¨ Make sure that the battery is inserted
¨
correctly.
⿟ Is the battery you are using deteriorated, for
example because of extensive use?
¨ Deteriorated battery may hold less charge,
¨
may be unable to power ON the microphone,
and cause other problems. Replace them
with new rechargeable battery.
, negative )
Reference
page
32
34
32
16
16, 30
30
37