Ralcam F6B Series User Manual page 10

BATTERY INSTALLATION
1.Unscrew the handle battery screw cover and take out
the 18650 batteries.
2.Please pay special attention that the positive and
negative poles of the 18650 batteries correspond to the
positive and negative poles on the endoscope handle.
After xed, close the battery cover and screw on the fi
screws.
8
-Negative
BORESCOPE
+Positive
EN