Just wondering how you guys break in Thunder power Lipo packs?

I just brought some TP 5000mAh 5S 45C packs and Thunder power recommends a 3-5C max discharge rate for the first couple of runs. It would be impossible to drive around and pull a maximum of 25A and my charger has a max discharge capacity of 50W, hence only being able to discharge at around 2.5A. I definitely dont want to be damaging $235 packs or even shortening their potential life span.