Turnigy 2S1P 5200 Hard Case 30C not good for ERBE?

[jpoprock]

Yikes, we're back to Life Packs now. Mind you ... when I'm talking about cold, it's pretty cold. Like 30 degrees out. But realistically, I'm only running like 30min or so every now and then. Is that still really bad for a lipo? I hate having to deal w/ the Life packs because they will be putting out so much less voltage. And using the EVX2 ESC, means I can only use 2s per side, which is still like what... 13.2 volts?? What kind of run time am I gonna get using that on a 4500mah pack??