change battery
 

Hello to all
I would like to know what kind of batteries i could you use with this transmitter ( sanwa airtronics vanguard 6ch PCM ).my old pack was used enough so i have to change it.In order to increase operation time i believe i have to increase battery capacity.Is that right?
So,
1)how much is the most i can put in the transmitter .for example 8 nicd batteries of 2000mah would be ok or there is a problem my transmitter burns?
2)how much is the most i can put in the receiver?i use 7 standard sanwa servos.the max voltage must be 4.8 volts , is that right? The amperage can be , like the other case , of 2500-3000mh?
Thank you in advance and i am looking forward you answer