Problems with the snesp power up

[Metroid fan]

Do batteries have to be the same voltage to run in parallel? And if not will it lower the voltage to have another battery with a lower voltage connected to the battery with the higher voltage?

[Metroid fan]

Bump: Come on someone must know... Oh and by the way my snesp is only playing some games and not others the games it does play are:
-Super metroid (Phew that was half the reason I built the thing )
-Super mario world
-Mario Paint? (why would I want that piece of crap )
and kinda super gameboy it starts up but the gameboy video is all screwy

The games it doesn't play are:
yoshis island
mario all stars
dk country
super star wars return of the jedi
Help!!

[SNESguy]

That is a common sense question to me.

With batteries being in parallel, they MUST ALL be in the same voltage.

Why? For example, if you have a 3.6 volt battery in parallel with a 1.2 volt battery, the 3.6 volt one will CHARGE AND OVERVOLT the other one,
POSSIBLY MAKING IT EXPLODE or destroy itself.

That is why all batteries in parallel must be the same voltage.

The rule applies for any situation, the higher voltage battery will destroy the lower voltage one.

[Metroid fan]

Ok thanks now I need to figure out how to give it more power...

[nos_slived]

It shouldn't be a problem with current, because batteries can supply large amounts of current, unless they're almost dead.

[Metroid fan]

Well the screen is unmodded and i'm using alkalines...
EDIT: and now for what you might or might not have been waiting for PICS!!!!!(probably the latter) http://img242.imageshack.us/img242/7480/dsci00566ur.jpg http://img242.imageshack.us/img242/7999/dsc000121dd.jpg http://img242.imageshack.us/img242/3964/dsci00586zp.jpg