EVX has a 6v 1.5 amp bec, which is just barely enough to power 2 servos. But some people complain they are glitchy. And you have to modify it to run off a single 7.2v battery, since you really dont want to run 2 batteries.

Running another battery for servos is a pain. having to charge a 2nd battery sucks, and it takes a lot longer to charge a small battery pack like that since the AA cells wont take a fast charge like the bigger stick packs. Plus its more weight to deal with.

88 4R, 350 V8, R150 5 speed Sold <...uot; />
97 4R, stock, daily driver
98 Sienna, kid and dog hauler, wife's ride