IMPORTANT! Please insert the battery on the anchor side first (as shown in the video below), followed by the latch side. A small gap is normal when the battery is inserted. This design allows for the battery and scanner to remain waterproof.
An important note for battery removal:
Ensure to pinch (or squeeze) the battery and scanner together when pushing the latch in to release the resistance from the scanner for easier removal of the battery (as shown in the video below).