i'm a professional cook. therefore, i wear a button down shirt with a breast pocket. i don't wanna put my manual batteries in my pant pocket while at work, so i put em in my shirt pocket. for my regular 510, this isn't a problem, as it'll fit tightly along the bottom of my pocket and stay in place when i bend over. my mega batt, on the other hand, has fallen victim to gravity more than once. to remedy this, i found a pen with a removable shirt clip, modified it a bit, and viola! works perfectly! just thought i'd share that bit of info.
