Just want to know if anybody knows were you can get the Nanotech 5s 4000mah 45-90c batteries from, because hobbyking does not sell them anymore and I have two sets of them for a 3d hobby shop extra 330sc 72" running on ten cell, and wanted to pick up a couple more of them because the plane performs really well with them and I get a good 8 minutes of flying time.
Thanks

Tunigy Nanotechs are a Hobby King own brand product, if they no longer sell them I doubt you will have any luck elsewhere.

How many peak amps are you pulling in your current setup? I've had good luck with the 5S Zippy Flightmax batteries, HK has them in 20C, 40C and 45C variants at 4000mah.

tsw

I never had good luck with any nanotech lipos. but ive loved blue turnigy, zippy flightmax, and zippy flightmax. I rarely use a name brand battery now days

I have had good luck with Nano's, but I did not over work them, they lasted quite a while without puffing. I don't buy them any more, Zippys or Gensace for me now, I don't like hobby King and Gensace have been good batts for me.