The first Hover I did with the Align batt it puffed so its a gonner now.
If I only Hover I use my TP extream 2200 25C LiPo
When flying scale in foward flight I have now issue with the TP 2100 15c but no Hover and I keep the flight at 6 min compared to 10 with the extream.

I'm slowly going to replace my 15c's with the extreams 25C