Lithium Ion Battery pack for the Atari 5200

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If you were going to purchase a Lithium Ion battery pack for the 5200 to put in the joystick holder area, which one would you get?  

[Atari 5200 Guy]

The 5200 is one of Atari's more power hungry consoles.  So you would want to treat it like an RC car; the more MaH you can get the better.  Between 10 - 12 volts max.  More than that could fry the console.  If you can get at least a 3000 MaH battery you might do OK.  I wouldn't expect more than 2 hours of battery time with the 5200.  Too many processors and the controllers require at least 5 volts to operate.  But I could be wrong.  

Let me know what you come up with as this is interesting.

[CrossBow]

There are two 7805s in the thing that drop the voltage down to 5v the system actually uses. So if you could find something that only provided +5 with lots of current, then you could just wire it directly in front of the two outputs from the VRs.

On the controllers themselves, I don't believe the stock controllers use the +5 or even have a wire in them for it. I know the Trak-Ball does and I believe my Wico keypad did, but when the cable broke on that, I replaced it with a standard 5200 controller cable and it worked fine without the +5. Even with an actual Wico 5200 controllers plugged into it is still works without issue so that +5 line wasn't used very often near as I can tell.

But now I have to ask...

 

Why?

 

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12 hours ago, CrossBow said:

But now I have to ask...

Why?

 

I hate cords, I hate fighting with cords, cords get in the way.  I had illusions of making a wireless 5200, but lag did the old 86 on that idea.  As to why, I hate getting off my posterior everytime I want to try a different game, which is often, to shut off and restart the 5200 so the AtariMax can get back to the window.  What I thought might be an easier solution of just making a remote switch didn't go as expected.

[CrossBow]

Gotcha...

 

[- Ω -]

Upon further reflection, I believe a solenoid would do the trick, attached to a 3D printed bracket that slides under the unit and above the on/off switch.  Problem is, I have no 3D printer, and no time to go hunting for parts.  So unless someone offered one for sale,  I'll never get one.

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... the added benefit is no modification to the unit would be necessary.

[Atari 5200 Guy]

A 5200 with a lithium ion battery?  Wouldn't that be like having to put plutonium in a DeLorean?