ok well, theres are the best i could find, i had 2 2c sitting side by side in the buggy before with a battery hight of 50mm, which did pop the shell up a bit because of the wires, i can lay this on its side and it will still fit in, and give me 10mm lower so the shell shouldnt be poking up. the batery holder is 147mm x50mm
https://hobbyking.com/en_us/turnigy-5000mah-5s-30c-lipo-pack.html