Friends please anybody tell where can i buy 5v battery for my futaba reciever.....

hi
it will be better if you purchase rechargable pencil cells. get 4 cells and a holder. this setup works great.
FYI get min 2200mah each cell and 1.2 v Nimh.

or else u can use a lipo and a bec attached with it, but be careful with the amp rating of the bec, because if ur requirement is more then........