FLY V100 User Manual page 20

Follow the steps given below to install your battery.
① Make sure the metal contacts of your battery and those of the
battery compartment are properly aligned and clip the battery into the
compartment.
② Put the compartment cover into the slot of your phone as
shown by the arrow in Figure (2).
③ With the hand pressing the upper part of the compartment
cover, slightly push the compartment cover as shown by the arrow in
Figure (3) until it clicks into place.
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