As has been said above that's down to the design of the case, not because it's a hard case.
Quote:
Originally Posted by LongRat
Lithium batteries in cars do not fail by structural rupture or penetration. I have yet to witness any failure that has not been caused electrically. In which case, containing the cells actually presents more hazard. In the instance above, the hard case is actually the cause of the failure.
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Would you run soft pack on a touring car, where half the battery hangs over the side of the chassis? Unless you can guarantee that there would never be a pack failure due to impact, penetration or bending in any accident and that a soft pack being hit by a car would never be damaged then a hard pack is always the safer option and the only ones that will be passed by the EB.
If your argument is that they are overpriced because they are in a hard case, as the case adds pennies to the cost of the pack do you honestly think they would charge less if we used soft cased packs. There are cheap alternatives, several Gens Ace packs are BRCA legal and available for around £25.