If you get the AA 2000+ Mah batteries your TX can last to almost a month on one charge. Mine is only a 700Mah but has lasted me for over 1.5 years despite flying/driving everyday. I believe in slow chargers!

For RX I run 5 cells but I hear this is not recommended for JR RXs. If I run my 600Mah 4 cells I do not push it for more than 4 flights of 8-10 mins. With my 5 cell 1,500 Mah I am confortable enough to take it up to 8 flights.