For no logical reason, it seems that a great many Bluetooth mice are finicky about pairing without full power, in my experience.
If it's a rechargeable, see if it does better after a full charge.
If it's got a name or model on it, you're may have good luck Googling for "how to pair xyx mouse."
If it's a rechargeable, see if it does better after a full charge.
If it's got a name or model on it, you're may have good luck Googling for "how to pair xyx mouse."

