This only includes only the case and the switch! This will fit the larger 1000mAh LiPo batteries. 

You will have to solder on the wires to the switch and splice between battery connector and battery. Modifications shown in photos. 

This has space for heat sink if you install on on the ECRF.. Also shown in photos (heat sink not included, you can get heat sinks for raspberry pi and it should work perfectly)..