Somebody on RCGroups was asking about how LiFe batteries fit into receivers with a 4x2x2 battery compartment, similar to what's on a Turnigy 9x. Here's some pictures of how it fits (summary: just right!). There's no stress on the battery compartment cover when snapping it on, and just enough room for the wires. Use the power connector that looks like a servo connector.
HobbyKing 1500mAH LiFe 3S 9.9v Transmitter pack
It fits nicely in this configuration, but the 9x power connector is blocked. This may or may not affect you depending on your receiver's connector configuration.
