Omron BL50T Instruction Manual page 54

4 Replacing the battery
4-2 Replacing the battery
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Remove one screw on the metal cover.
Pull the metal cover toward you (①) and remove it while lifting it up (②)
Grip the label and pull out the battery pack.
※Do not grip the connector or cable when pulling the battery pack out.
※The battery pack is heavy. Be careful not to drop it.
BL50T/BL75T/BL100T