powering my xbox with batteries


by vincent_vega
Tags: batteries, powering, xbox
vincent_vega
vincent_vega is offline
#1
Mar9-12, 12:27 AM
P: 32
I need to do a project for my electricity/magnetism class, and I thought about making several copper/zinc batteries to power my xbox360. Suppose I get huge strips of copper and zinc and put them in a fish tank full of salt water. How many volts do you think I could get out of this? Is there a practical way to get 120V by putting together several of these?
Phys.Org News Partner Engineering news on Phys.org
Researchers propose network-based evaluation tool to assess relief operations feasibility
Large streams of data warn cars, banks and oil drillers
Engineering student developing traffic forecasts
MATLABdude
MATLABdude is offline
#2
Mar9-12, 01:36 AM
Sci Advisor
P: 1,724
Welcome to PhysicsForums!

First off, what level of class is this (middle school, high school, university)?

A standard copper-zinc cell creates about 1.1 V:
http://hyperphysics.phy-astr.gsu.edu...ectrochem.html

As you're probably learning, or about to learn, in order to get higher voltages, you'd need to put them in series:
http://en.wikipedia.org/wiki/Series_..._and_batteries

However, that 120 V coming out of your wall isn't DC, but rather, AC. Since the XBox (and most electronics) don't actually run off of AC, the usually have power adapters that provide DC output. In the case of the XBox or XBox 360, that's only 12V DC. However, it requires a great deal of current--over 10 A (it's left as an exercise to the reader to understand this paragraph!)

Long story short, it's probably more instructive and significantly easier to pursue a different project. For instance, an old-school Baghdad battery:
http://en.wikipedia.org/wiki/Baghdad_Battery

Bonus points for linking this into Archimedes! But please refrain from dancing naked in the streets...
vincent_vega
vincent_vega is offline
#3
Mar9-12, 01:40 AM
P: 32
University, it's a fun extra credit thing. I failed to realize that it's AC coming out of the wall :/ I'll look into those baghdad batteries though.

Thanks for the info!

DragonPetter
DragonPetter is offline
#4
Mar9-12, 08:54 AM
P: 834

powering my xbox with batteries


I was looking at my 360 power adapter a couple nights ago since my friend laughed at how big it was. That thing was capable of almost 200W. I doubt you can find a battery that will last very long to run that.
cmb
cmb is offline
#5
Mar9-12, 09:17 AM
P: 623
Quote Quote by vincent_vega View Post
University, it's a fun extra credit thing. I failed to realize that it's AC coming out of the wall :/
I'm just curious; what attracted you to a university course that teaches electricity/magnetism?
vincent_vega
vincent_vega is offline
#6
Mar9-12, 08:22 PM
P: 32
Quote Quote by cmb View Post
I'm just curious; what attracted you to a university course that teaches electricity/magnetism?
It's physics. general physics II
NascentOxygen
NascentOxygen is offline
#7
Mar9-12, 10:03 PM
HW Helper
P: 4,708
Quote Quote by cmb View Post
what attracted you to a university course that teaches electricity/magnetism?
Magnetic attraction, maybe?
NascentOxygen
NascentOxygen is offline
#8
Mar9-12, 10:12 PM
HW Helper
P: 4,708
Quote Quote by vincent_vega View Post
I need to do a project for my electricity/magnetism class, and I thought about making several copper/zinc batteries to power my xbox360.
Now that others have put the kibosh on that idea, consider alternatives. Something that operates from those small flat watch batteries, maybe? Perhaps get a cheap calculator and make a couple of wet cells to equal the voltage you measure of the calculator cell. The current it needs will be tiny, so your homemade cells should be able to power it (for a while, at least).

Can use a can of coke, where the can already furnishes one of the metals in contact with the acidic solution. (I thought the inside of drink cans was thinly painted with a plastic to minimize the drink dissolving metal, but apparently it is not a perfect coating, or something...)
vincent_vega
vincent_vega is offline
#9
Mar10-12, 01:43 AM
P: 32
Quote Quote by NascentOxygen View Post
Now that others have put the kibosh on that idea, consider alternatives. Something that operates from those small flat watch batteries, maybe? Perhaps get a cheap calculator and make a couple of wet cells to equal the voltage you measure of the calculator cell. The current it needs will be tiny, so your homemade cells should be able to power it (for a while, at least).

Can use a can of coke, where the can already furnishes one of the metals in contact with the acidic solution. (I thought the inside of drink cans was thinly painted with a plastic to minimize the drink dissolving metal, but apparently it is not a perfect coating, or something...)
Yeah I guess I'll have to scale it down. It's not as impressive as if I would have powered up the 360 to play a couple seconds of halo, but something like that works too.


Register to reply

Related Discussions
( easy ) Powering LEDs off of triple A batteries Electrical Engineering 9
What are the main differences between batteries in parallel vs. batteries in series? Introductory Physics Homework 1
9v Batteries Powering Multiple Items Electrical Engineering 3
Sealed Batteries vs. Unsealed Batteries General Engineering 0