Assuming you're indicating a battery too long... and I'd question how secure too.Let's play a game which is the knock off that throws it outta balance and which one is the innovative one?
On your design, what battery size can you move up to.. the designed in battery dimensions? Does your tray modify the Ft section too?
Have these been popular or do most prefer the OEM style battery cartridge style?
Over on the H920 side, we've been playing with batteries and different sizes. PatR taken a great direction on a single large battery. I've been playing with new batteries of lower cost / increased performance but it's been very limited by internal battery chamber dimensions.
Have you played with any battery door mod for the H920?