I am using the TP and Evo25 and sport fly 6-7 minutes and will put back 3500 to 4000 mah. The lowest vt at start chg has been 21.37(7.5 minute flight), I have been pushing these batterys to learn where the line is, it seems to be around 6-6.5 miutes for sport flying, when I start pushing I drop back to 5-5.5 minutes. Hard 3-D will be back to 5 minutes max. so far, with 15 cycles the batterys are 100 %, that may change into the future. The 600 is stock from Align. I have 5 paks and use both the TP1010 and TP610 chargers with balancers.