I have 2 2250 Mah 3S1P Maxxamp Lipos. I have been using them in my MiniFuntana for about 1.5 years (worked well). They were advertised as rated to 25 Amps and I was drawing about 15-18 in the MiniFuntana (CC Pnx-25 set to 9v cutoff). I really can't give a great estimate of cycles but I really don't fly that often (windy as h*ll here in SD) I would guess >50 but <100 cycles.

My problem is that they now peak out at about 17 amps (maybe a second at 19-20). I re-engined my MiniFuntana to outrunner and it wants to draw 19-20 amps but these two won't cut it.

Could I be approaching the end of these two cells lifespan?

Thanks, George