Lectrosonics LMa - Manual (Page 7)

Frequency-Agile UHF Belt-Pack Transmitter
Rio Rancho, NM 7
Battery Installation
The transmitter is powered by a standard 9 volt battery.
We recommend using alkaline, lithium, or rechargeable
LiPolymer batteries for longest life. Standard zinc-car-
bon batteries marked “heavy-duty” or “long-lasting”
are not adequate. Alkaline batteries provide over six
hours of operation at room temperature. LiPolymer bat-
teries will last about 7 hours per charge, and Lithium
batteries can provide up to 13 hours. The battery status
circuitry is designed for the voltage drop over the life of
alkaline batteries. Because rechargeable LiPolymer bat-
teries run down quite abruptly, using the Power LED to
verify battery status is not reliable with LiPolymer batter-
ies. However, it may be possible to track battery status
using the Battery Timer function available in a number
of Lectrosonics receivers. (Refer to the associated
receiver manual to determine if this function is available
in your situation.)
Warning: Care should be taken not to leave
a fully discharged lithium battery in the
transmitter, as swelling of the battery can make
it difficult to remove from the compartment.
To replace the battery, push up on the Battery Com-
partment Door and rotate it clockwise. (See photo.)
Remove the old battery and take note of the polarity
marked inside showing the location of the positive (+)
and negative ( -) terminals. (You can see the large and
small contact holes inside the battery compartment with
the door open.)
Insert the new battery correctly and rotate the door to
snap flush against the housing. If the battery is inserted
incorrectly, the door will not fully close. Do not force the
door closed.