CRC 6300 LIPOS CASE'S CRACKING

[gar]

Hi

I run a gen xl and have just upgraded with 4 new packs of the CRC 6300 50C
lipos.
Only bought them on the 26th April 2011. just noticed when charging them tonight that all 4 packs have crack's in the hard red case's on the base of the pack's and also around the charging hole sockets.

I had Nosram packs before and never had this problem surly this is a defect in the product

Anyone else had this problem
Gary