Currently flying with a bonka 2200 mah 11.1 v lipo...which barely fits in.anyone who can recommend a higher mah battery which can fit in a fc 40..name and brand and mah required.also are here methods wherein a larger battery can be strapped under the drone using some modification.last whats the max mah rating battery which may be used in this quad at 11.1v...can anyone also provide the internal dimensions of the battery compartment in centimeters etc..thanks