Hello guys, I'm new at this forums but I have a few questions. So I decided to change my quadcopter which is now flying like 7 minutes with 7,4V 650mAh batteries, and have range for about 80 metres with 2,4ghz, it also has a little camera which hasn't got a really good quality. So I was wondering how could I change flight time to minimum 20 minutes or rather 30 minutes, I would need at least 300-500 m range, and I would buy a mini full hd camera. How can I solve the problem with flight time and range? Thank you, Matej