I have two of the 3000 and two of the 4300 Zippy-K packs. They get a bit warm (120 or so) but so far they're still taking plenty of capacity, more than advertised. No complaints for as much as I paid for them.

I sent an email to Hobbycity about the lack of 2s Zippy-R packs now. They pointed me to their Rhino lipos which seem to have similar specs but still no 2s. They have promised more capacity, however...

Who's Kungaflow? I'd like to meet him. :na:

My a123 source dried up so I don't have any more to sell unfortunately.