Lectrosonics M185 - Manual (Page 6)

BATTERY REPLACEMENT
The M185 transmitter is powered by a standard alkaline 9 Volt battery. It is important that you use
ONLY an ALKALINE battery for longest life. Standard zinc-carbon batteries marked "heavy-duty" or
"long-lasting" are not adequate. They will provide only about 4 hours of operation. Similarly, ni-cad
rechargeable batteries only provide 4 hours of operation or less, and will also run down quite abruptly.
Alkaline batteries provide about 15 hours of operation.
To open the battery compartment, press outward on the cover door in the direction of the arrow as
shown in the drawing. Only firm, sliding pressure is needed to open and close the battery door.
Press outward on the Swing the
battery door in this door open
direction
Figure 3 - M185 Battery Compartment Door
Swing the door open and take note of the polarity marked inside showing the location of the positive (+)
and negative (-) terminals. Insert the battery correctly and close the cover by pressing the door closed
and across, reversing the opening procedure illustrated above. Don’t force the door closed. The
terminals will hit a protective polarity barrier. You can see the large and small contact holes inside the
battery compartment.
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