I just bought a new battery (my 5th) and on my first flight I got 14:58 min before I hit my 1st alarm set for 20% (actually it was at 18% once I landed and stopped the timer). I had fully charged the battery 24 hours before this flight for the first time. Even with 20% left, I would only have gotten 3 more minutes of flight. So a new battery that is billed as a 25 minute battery that only gets 15 minutes at 80% seems defective to me. I did not time my other batteries like this but I have been getting around 17 minutes at a 30% warning with my others after 5-10 discharges each. Should I return this battery to Amazon or might it get better times with more charging and discharges?