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thanks for all the help guys.. i have another battery i am gonna use it's one of those portable DVD player batteries..the only problem i have is that it is 9 volts and the PSone screen needs like 7.5 or 8 volts..what is the best way to get 7.5 or 8volts? should i use a 7808 or is there a more ...

i am building my first portable using a retro duo (for just the NES portion) with an unmodded PSOne Screen and my battery is a Radio Shack 3600mAh battery (one of the RC car batteries). Well my question is that my portable only runs for 51 minutes before the screen shuts off. I have the power from ...