I have owned my FC 40 for just over a year. I You Tubed it to discover how to calibrate it and have always flown it using the GPS. I have not used it for about 3 months but today I took it out for a flight. Problem was with each of the 4 batteries I own it went up but after about 2 minutes the lights just started flashing red and I had to retrieve it. I am willing to accept that Maybe I have a duff battery but surely not 4?? When I got home I charged each one and it took less than 10 minutes to recharge them back to full indicating that they had only been slightly discharged. Any ideas and please could someone explain how and why I need to connect it up to my computer. When I bought it I was under the impression that things would be simple!
Thanks
Martyn
Thanks
Martyn