A:AnswerNo, there are rare ones that specifically light up that only need one to have the light on, but they come with it installed initially. The function is unaffected and nothing from the Bey Blade series that Best Buy sells needs batteries.
A:AnswerMy Grandson is 6. Has been playing with them since he was 5. This is a big fad with the elementary school kids right now. Older kids like to play these too.