I updated my post to clarify "3 perpendicular velcro straps" which I determined was a design flaw:
I would later move onto TEKNO which uses a superior design with a long strap that runs parallel with the battery:
I would later run into issues with hard cases separating at the seam of the...
+1
Here's a soft case 4S pack that was used in my AE RC8BE which used 3 perpendicular velcro straps and small lip on the battery tray, after some nasty tumbles the pack would tend to get folded up like a banana, you won't experience this issue with a hard case, though the hard cases do tend to...