Are Zippy Lipos safe with a Castle MMM Speedy?

[RC-Monster Mike]

I will put the performance of my packs against any other out there. The recent failure that happened to be using my packs is of a different type than described in this thread - the gearing was low enough for even the lower end packs when the failure occurred and seems to be unrelated to the batteries - I am not going to speak for Castle or anyone else on the particulars, but i can say with certainty that my batteries are NOT a problem, as I did pretty extensive testing (almost a year) before offering the packs for sale. :)