How Often Should I Charge the Blue2? Jason Schlief October 18, 2021 13:12 Updated For optimum performance and battery life, we recommend charging your Blue2 overnight after each day of use. Related articles Getting Started With Blue2 Bluetooth Switch Blue2 Locked and Unable to Pair Issue Pairing Issues with Blue2 How long does the Blue2's battery last? How do I configure Blue2 with my communication app? Comments 0 comments Article is closed for comments.