@Omegaproject.

As has been mentioned, you need a good supply of amps to power periffrals, especially servos. There aren't many regulators/ step down buck converters that will supply the amps you will probably need (as Richard mentioned, 20 amps is a good number to go for). The very few high amp regulators that there are will cost a small fortune.

A better and cheaper option you could use with the correct long lasting voltage and amperage you need, would be to use two (or even three) 7.4 LiPo batteries and connect them in parallel. That way it would cost you less than a high amp output regulator, you still get the same voltage output, and the mAh would be greatly improved giving you longer run times between charges.

Hope that helps.

Thank you all very much It hate that I don't know much about robotics I was originally going to take it in high school but life had other plans. And if I use the online 5v regulator perfirile with the hd servos continus and sensors it should be ok then with the two lipo a rite, becuase the reason why I've been asking this question is becuase I am building a tall standing bi-pedal robot that will be either the same size or maybe taller that the XLR- One robot. So far I have estamated that I will have up to 23 hd servos, 14 pressure sensors distributed from the hand and feet, 1 mini 100ft distance sensor for each hand from robot shop and 3 ultra sonic ping sensors from 1 in the chest and two between the toe areas of the feet and I plan on putting a inboard touch screen computer in the upper chest but I'm going to seperate the pc to a seperate power source. I want it to be a family harloom

@Omegaproject

Just to clarify, ideally what you need to do is to hook up a 7.4 LiPo battery (or two in parallel) directly to the EZ-B (no regulator needed). That 7.4v will power the servos. Where you need to use the 5v regulator is with 5v sensors or motor controllers.

The red pins on the 24 digital ports will deliver the voltage/amps that the battery supplies, 7.4v in this case. Attaching the 5v regulator from the online store to these pins, will drop that voltage to 5v and supply a miximum of 1 amp.

@Omegaproject Not sure why you gave the credit to Steve... Anyway, as I was saying you need lipos for that bot you want to make... They are light, have the right voltage and can produce tons of current for servos... Perfect for a biped...

Awsome thank u Guys as sry I was gonna put credit to all but I only allowed one for some reason I guess their isn't a credit all opion but I honestly give every one who has commented on this post credit if it wasn't for every ones input I would be clueless and I think I see what ur saying on the 5v regulator but I'm not exactly sure how to hook up 2 lipos in paralle would I just use a dual wire connector for both powers and both grounds or is there a specific wire connector to combine the two batteries together. I really fill stupid rite now lol I just really want to make some thing unqinue and one of a kind that I can pass in to my future generation and that my family can be proud to have in the family

Here is the bi pedal in which I got my inspiration of making my robot closest in resemblance with. I have always loved E-102 gamma and the name for him came from gamma's later version E-123 (Omega) i even plan on making weapon attactment adapters like his left hand cannon or even hiden weapons inside of his body panels for home defience and shooting range purposes, of course they will be airsoft and nothing lethal lol and that is why I am doing as much research and asking for as much imput as possible to insure Omega's success.

@Omegaproject

I have to agree with Richard. I'm not sure why you gave me the credit either. He gave you a good answer of using LiPo batteries and sufficient amps needed. I was just adding to what was already answered. But to answer your question to how to connect batteries in parallel, join the batteries Possitive wires together and ground wires together then a single possitive and ground wire from the join to the EZ-B. Here's a quick diagram...

Thank you I thought that's how to do it but I wasn't sure and I guess next time I should give credit to all in my comments instead of the credit giver thingy lol thank you all so much