What battery to use in a arduino?

[Novashadow]

Hi guys, i'm trying to make a yoshimitsu from soul calibur 5 automatic faceplate so i bought an arduino and a pair of servos to do so, i had a engineer friend to do the electronics and so far so good, they both move at the same time with a button, when i use the power from a usb port in my computer they move fine but when i get to put the battery suddenly they dont move at all, here is what it looks like:



So i dont know much about electronics but i know that every circuit has different needs by the components it has, so i made my circuit with a:

- Arduino uno


- Two turnigy tg9e servo

- 9v gp greencell extra heavy duty battery



My friend told me that arduino should work with 5v so with 9v i would work as well because it can take up to 12v, any sugestions to whats happening or what battery should i use?

Thanks

 

[edge10]

I asked my coworker who is a big Arduino fanatic and he said 9 volts *should* do it and you could go up to 12 volts before heat starts to become a problem, 6 volts in the minimum he recommended for the Arduino Uno.

He also said, he would have to see your wiring to have any clue as to why it isn't working.

 

[Arrangemonk]

i thought arduinos run from usb (5v) so why not use one of those fancy powerbanks popping up everywhere, those are rechargable and can output up to 1000ma
(http://www.newegg.com/Product/Produ...06&cm_re=powerbank-_-0SC-007U-00006-_-Product probably something like this)

 

[Daniel Nelms]

I've used these kind of things before to power ardunios and they store a lot of power http://www.amazon.com/Compact-10000...?ie=UTF8&qid=1418739962&sr=8-7&keywords=anker