Genesis2 portable batteries

sammy · Post by **sammy** » Sat May 20, 2006 2:07 pm

I've almost finished my Genesis 2 portable but I haven't got a battery yet... What do I need to power it for about two hours (including none led-modded 4inch lcd screen)? I've got some 6V Ni-Cd batteries laying around though I heard those are not good.

geekbait111 · Post by **geekbait111** » Sat May 20, 2006 3:09 pm

yah Nicad are pretty bad...
is it a PSone screen (or somewhere around the ampage of 1Ah)?

if so (I'm not an expert on the amperage of v.2 gen)... maybe 6 Nimh (probably 2500mah or more would be ideal) AA's wired in series (voltage increase) should do the trick. if you want to know the voltage of gen. 2 you'll need about a 7.2volt minimum for it. (7.2 volts are probably ideal)

Nonsense Man · Post by **Nonsense Man** » Sat May 20, 2006 3:12 pm

psone screens aren't 4 inches

geekbait111 · Post by **geekbait111** » Sat May 20, 2006 3:21 pm

true... but the intec PSone screen is about 4 inches... so yah you'll probably have to tell us the screen or amperage of the screen before you could know the life for sure

Post by **Skyone** » Sat May 20, 2006 3:21 pm

It depends on what your screen's voltage is rated at.

The Genesis 2 can run off 5v at 300-400mAh.

sammy · Post by **sammy** » Sat May 20, 2006 5:11 pm

The screen is a 4inch psone screen but it is PAL and not sold in the US (it's by Bigben but the actual PCB says Goodwell), I was able to run it on a 1000mAh/6V adapter but I think it needs to be higher if I use batteries. Also the bulbs inside the screen tend to flicker when te music gets loud.

sammy · Post by **sammy** » Sun May 21, 2006 5:59 am

I've taken some pics of my progress. It's a crappy camera and I suck at taking pictures so don't start complaining.
These are the buttons I've put in an alu plate to try them out. I've got some issues with the start button and the C button but I think the Ic is broken...

This is an overall view of my progress (notice how messy my working space is

), everything works though you can't see it very well on the picture.

Overall view, again but this is how the layout will probably be.

This is a custom board I made. As you can see I've relocated some outputs and the Brightness and Contrast knobs. You can also view my crappy soldering on this pic.

joevennix · Post by **joevennix** » Sun May 21, 2006 7:31 am

Holy crap those are the biggest solder traces I've ever seen. What did you use, a solder gun?

sammy · Post by **sammy** » Sun May 21, 2006 7:36 am

Nah I used 3mm solder.

demonofaj · Post by **demonofaj** » Sun May 21, 2006 9:39 am

Dude, did you use like a whole pack of solder, that thing is HUGE! But you can either buy a 7.2 V RC car battery, 8 alkaline AA's, or 10 rechargeble AA's.

joevennix · Post by **joevennix** » Sun May 21, 2006 9:53 am

Hmm, did you just cut lengths of solder and then melt the leads into them? Never thought of that, most designs don't have the space to allow it.

sammy · Post by **sammy** » Sun May 21, 2006 11:11 am

I hacked my first sega a lot and it got totally screwed up so that's why it's so big. And for the traces: try soldering with 3mm solder and you'll see what you'll turn out with. Also It look very big but actually the whole thing fits inside a Sega case without metal shielding and btw I said before that the buttons were only temporarly.

sammy · Post by **sammy** » Tue May 23, 2006 12:01 pm

Today I've gotten a Ni-Mh battery from a friend for $7. Which is very cheap because it retails at $97! The battery's specs are: 14,4V /Ni-MH 3500mAh. It is a Laptop battery made by ERTH electronics for use with Panasonic equipment btw.
I have some questions though:
-can I open it to take the cells?
-how do I open it? (it has no screws and consits of two molded plastic forms pasted together)
-how do I charge it (I think there is an internal charching circuit since it retails at $97)

I'll post pics if you need any.

EDIT: I've opened it up (Swiss knife) and there are 12 cells rated at 3500 mAh / 1,2V inside. To my dissapointment there is no internal circuitry inside. So the only thing I need to know now is how to chrage it...
Also some of the cells are oxidated which means they are probably not that new.

sammy · Post by **sammy** » Sat Jun 03, 2006 4:01 am

Anyone?
EDIT: Oh damn, triple post

Klefmung · Post by **Klefmung** » Sat Jun 03, 2006 4:07 am

I do not suggest using solder traces. Solder puts up major resistance.