Hi,
I am new to rc hobby and need some help to choose a baterry pack please.
a)can I use 5cell (6v) pack with jr receiver? (646pcm) Came from factory with 4.8v pack

b)what size cells I must use with a 60in plane ? I see that the cell s weight between aa aaa and biger type cell isn’t much different.so I must use aa,aaa or biger size cells for my pack?

c)the capacity of the cells. I will need them only for the receiver and servo operation but in the price they have at about 2$ diference. If I choose cells with biger capacity (2600) the 5x2600 will be 13000mah. Is it too much?until now i used a 1100mah pack and it is more than enouth for me. Is it more dificoult to balance the cells in the packs when I charge them?

I see that many smaller capacity aa cels is out of stock. Any suggestions?
I don’t want to charge with 13a at 1c.

I was thinking of 5 cells at about 1000-1500 mah with total of 5000-7000mah to be able to charge them with 7A at about 1c or 2c.

d) the shape of the pack is critical?

e)many users suggest 2 packs with two switches at the same receiver. Is it safe? The packs must be identical and I will need a regulator?

f)nimh or nicd?

the reason i want to change my packs is that they are already 3 years old and i dont risc a crash.
please help me to choose a pack
charger used : ICE

Thanks very much
Achilles
Achilles