User's Manual
UCR411A
LECTROSONICS, INC.
18
Lift and rotate the battery door to open it.
Observe the battery contacts inside the compartment. 
The larger contact is the neg. (-) terminal and the 
smaller contact is the pos. (+) terminal.
Insert the contact end of the battery first, making sure 
the large terminals are aligned with the large contacts in 
the compartment.
Depress the batteries slightly to allow the door to rotate 
and close. The battery contacts are spring loaded to 
maintain constant pressure. The door with snap into 
place place when it is fully closed.
CAUTION: Lithium batteries will expand and 
swell if allowed to go into a deep discharge. 
Be sure to remove lithium batteries as soon 
as possible after they are depleted. If lithium 
batteries are allowed to fully discharge while 
still inside the battery compartment, they will 
be very difficult to remove. 
Stuck lithium batteries can be avoided by 
removing the label wrapping around the 
battery before use. This will allow the battery 
to swell but will still leave enough room in 
the compartment for the battery to fall out 
normally.
Replacing the Batteries
The larger contacts 
are the neg. (–) 
terminals.










