Battery > Computer > Motherboard

That's where the demand for power will be a little higher on any battery setup you end up with. It's not only the board but the other hardwares besides the cpu that go with it. You're still trying to take a desktop on the road like it was a laptop.

That doesn't specify highway travel but carrying everything around like you were carrying a portable unit. Most likely this will end up also needing some type of custom modded case to allow for some type of battery holder or carrying case for the 12v battery pack used.
 
Hmm... The DVD & Floppy is coming out of the USB, no extra power... HDD is 4.2k RPM... laptop size... and just cheap headphones...

BAttery - What type would you recommend? Remember this is portable, so I cant lug around an 35lbs 12V car battery :D
 
USB devices add to the power consumption as well, they just don't get power magically from nowhere. :P

And as for the battery, somehow I doubt you'll find one that is any where near reasonably priced. How long do you need the computer to last?

(And if you already answered that, don't get testy. There are FOUR pages of replies and while I scanned through the entire thread, I'm definitely not going to read the entire thing in detail.)
 
PohTayToez said:
USB devices add to the power consumption as well, they just don't get power magically from nowhere. :P

And as for the battery, somehow I doubt you'll find one that is any where near reasonably priced. How long do you need the computer to last?

(And if you already answered that, don't get testy. There are FOUR pages of replies and while I scanned through the entire thread, I'm definitely not going to read the entire thing in detail.)
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Don't need ta :D

Battery... not really sure... Maybe an 9 cell laptop battery?

This is going to be an gaming... BF2, Halo... lowest settings of course. But still..

11.1V probably, with how many mA/A do I need?
 
A 9v battery won't work for a 12vdc system. In order to use 9v batteries you would then need a 9v to 12v stepup type of dc transformer. During that process the amperage suffers once a load is placed. You still have to go back and look at how laptops are powered to understand why their batteries only see a good 4hrs. of use before needing to be recharged.
 
Do you think a 9 cell is going to power a 12v system? :confused: "gee i don't know?" Why do you think 13.7-13.8v is seen in automotive for 12v items there? The voltage drops when more amps are pulled. And micro amps in any value won't cut it for a desktop made portable. :rolleyes:

A 9v cell won't power any 11.1v anything since that is underpower right there. For amperage needs first look at what amps are provided by a laptop battery to see only 4hrs. of use with an energy efficient combination of hardwares.

Now try adding a desktop with a vga card over onboard to see that more will be required to see the same amount of running time available. As we went over amperages at the start of this thread you are looking at over 100.
 
................................................................................................... I see where your going... but you don't really understand...
 
compaq-e500-battery.jpg


That battey is an 11.1V with NINE CELLS.. the more cells, the more LIFE...

Liion battery CELLS :

01.jpg


What your referring to:

r305098.jpg
 
You were talking a 9v lantern cell before. Now you are looking at flashlight batteries for the most part there. You are headed in the wrong direction with something like that unless for a small lcd tv that probably won't have any direct input for an adapter.

Do you know how large a laptop battery is? Now imagine needing something larger to handle the draw placed by desktop type hardwares. That's why something more like a car battery will be able to provide enough amps to handle what you are trying to do there without necessarily being quite that large in size.
 
For making a desktop portable and battery powered you will need a battery that can handle large draws on it for power. Small flashlight batteries can't handle the draw just seen when first starting a system despite that being an other set of hardwares there.

A desktop will see a pull on the battery source almost as much as the starter on a small car in that sense. lantern batteries are designed for low draw over a lengthy period of time not heavy loads all at once.
 
Ahh... wow...

An laptop battery is an lantern battery? :confused:

Hmm... I might make this into an backpack lappy :D

With VOIP, full telephone support.. maybe even an 72mhz channel intercept thing... like an spy pack :P
 
You are the one that keeps bringing up using a 9v lantenr battery. That wouldn't work for anything on 12v hardwares. Besides a car battery which would be the only thing you would be able to carry in any back pack used leaving no room for anything else.... the idea of 12v batteries for electric start tractor mowers smaller in size would be one thought if 12v as well. Those generally see their own battery charger.
 
PC eye said:
You are the one that keeps bringing up using a 9v lantenr battery. That wouldn't work for anything on 12v hardwares. Besides a car battery which would be the only thing you would be able to carry in any back pack used leaving no room for anything else.... the idea of 12v batteries for electric start tractor mowers smaller in size would be one thought if 12v as well. Those generally see their own battery charger.
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I said 9 CELLLLLLL ! Not 9VOLTS!...

And I have an 9 CELL laptop BATTERY... that is ONE whole thing, the 9 cells total 11.1V...
 
And the small batteries used for totally 11,1v still wouldn't provide the amperage for the draw placed on them by a desktop. The laptop using that setup was designed for a lower requirement then others.

That reminds me of the old Epson HX-20 that saw 4 rechargeable C type batteries those many years back. http://oldcomputers.net/hx-20.html Talk about dinosaurs for laptops! :P Try working on over 70 of them!
 
WOW They had batteries back then?!?!

WOW

--- End

So, I think I'll use an backpack... with VOIP and an full Wireless N (or preN) + telephone system... Yes, another crazy idea... but I have more room... now...

So, where should I get started? I can frame the backpack to make it stiff...
 
For a desktop you would a battery source that will handle the load placed on it. Those small batteries even when combined wouldn't handle the much larger draw that a desktop system will place over what you would generally see with a portable(laptop/notebook).

Portables are made to see only a small load in order to extend battery life just to the 4hr. average. Now replace that with a regular case to see how fast would eat that up. At the same time any automotive type battery would be inadequate for lasting any good amount of time while having the amps available. Every forget to turn off head lights on a car and see the battery dead in 30min.? A lithium battery for desktops?
 
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