I run a LiPo plate that has a hole drilled into it lined up with a spare hole on the chassis, specifically the hole underneath the belt in the middle of the chassis. Then, I just use double-sided tape to hold the battery onto the LiPo plate. I like to also use 1 strip of 1/2'' threaded tape for security, but if you use enough double-sided tape it shouldn't be necessary, and it'll look much better.
I get the threaded tape from work for free, and it'll stick to ANYTHING
It doesn't look as nice as black or colored battery tape, though.