RE: Futaba 4.8v Servos with Jaccio 5.2v Regulator
I think the 4.8v refers to a 4 cell nicad/nimh that would be around the 5.5-5.7 volt when fully charged, discharged it will be 4.8 volt.
So the regulator is is bringing the lipo down to a fully charged 4 cell level.
Jason