I fly often on AA (at least once or twice a month) and I always carry flashlights in my carry-on bags.... mainly because I don't check any bags in.
At the most, I may have 4 or 5 flashlights with me, but on average I usually have 3.... keychain (LD01), small hand-held (E11), and larger hand-held (E21 or even my TK41). I've also had packs of batteries in my bag as well, like a 24-pack of AA batteries. Never had any issues, nor have I been questioned about them yet. This going through 'major' airports like LAX, SFO, ORD, and DFW for the past 4 years.
At the most, I may have 4 or 5 flashlights with me, but on average I usually have 3.... keychain (LD01), small hand-held (E11), and larger hand-held (E21 or even my TK41). I've also had packs of batteries in my bag as well, like a 24-pack of AA batteries. Never had any issues, nor have I been questioned about them yet. This going through 'major' airports like LAX, SFO, ORD, and DFW for the past 4 years.