=?
The typical shrinkwrap would not pass you see...
1 HARD CASING
1.1 LiPo battery packs must have a hard, protective case that surrounds the cell(s) in the racing application. A factory encased hard shell pack is mandated for race durability reasons that stem from the vulnerability of LiPo cells to physical damage. Any physical distortion, denting or puncture to the cells will cause either an immediate or long term safety risk. A hard cased pack reduces this risk significantly by protecting the cells from crash damage, battery ejection, and general wear and tear at the track. EFRA defines the "hard case" as a case made of ABS or similar type material. The case shall consist of two (2) halves with each half being constructed from a single mold that is not easily pliable and retains it shape without any exterior or interior support. Both the top and bottom sections of the case must be secured together by glue, double-sided tape or heat seal in such a manner that separation of the case to remove or replace the cells will destroy the case and/or label and render it unusable in competition. The case must be installed by the manufacturer or value added manufacturer. No end user installed cases are acceptable. The case will protect the cells from damage on all sides and will completely cover all cells having only openings for wire connections. Any modification to the factory approved hard case will make the pack ineligible for participation in EFRA sanctioned events.
+ drop tests etc...
Don't get me wrong! A hardcased saddle within specs would be superb!
Still... if you think about this being a fun hobby for most... wouldn't it be great to fit a BIG LiPo with massive mAh - you can use only one pack at races - you can enjoy looong practice runs - why miss all that because of the old size specs for NiMH cells. This is mixing oranges with apples! 