HOW LONG WILL MY SMARTWATCH BATTERY LAST? Vicky Updated October 30, 2018 03:07 Follow Your battery will last up to 24 hours, depending on usage. Related articles MY BATTERY WON’T CHARGE PAST A CERTAIN PERCENTAGE. HOW CAN I FIX THIS? HOW LONG DOES IT TAKE TO CHARGE MY BATTERY? HOW DO I CONSERVE BATTERY LIFE? Comments 0 comments Please sign in to leave a comment.