[UPDATE] 14/01/16 | battery_holder_with_wings_xt60.stl
I have since added an XT60 connector holder so you can now not only store the balance connector but the XT60 connector as well.

[UPDATE] 14/01/16 | battery_holder_with_wings.stl
Updated the last version by making it smaller so it will fit snug around the battery as well as adding a small "wing" to slid over the fatshark headband, This eliminates almost all the plastic from touching your head making it an even slimmer fit than the version before. This also mean that you will not have to slide the plastic holder over the headband it can simply be slid in with the battery.

[UPDATE] 13/01/15 | battery_holder_V2.stl
I made the walls thinner making it more comfortable as well as making the fillers on the inner and outer corners to make it for fitting on the battery. also I have added some slots on the sides to make it lighter. I have made some changes to the balance connector "plug" making the walls thinner again and reducing the height making it a slimmer fit.

[Original Post] 11/01/16 | battery_holder.slt
This is a basic battery "clip" that slids over the battery to stop it from falling out due to the shape unlike the standard Fatshark battery being like a dog bone. It also has a "plug" to hold the balance connector so it will stay out that. it is kinda bulky and I will try to refine it more so keep checking back.

Battery is a 1300mAh 3S 25~50C Turnigy nano-tech supplied with a XT60 connector how ever I have made a small adapter from the 2.1mm barrel connector to the XT60 you can also buy these but just as cheap to make (centre of the 2.1mm barrel jack is POSITIVE + out side is NEGATIVE -)

Battery Link: https://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=25212
XT60 to 2.1mm Link: http://rclexa.co.uk/Fatshark-FPV-Battery-Adapter-XT60-Female