Turboexpress internal rechargeable battery mod

[NightWolve]

Actually, even with the additional battery pack, the fully modded express is lighter than the stock TE with the 6 AA's.  Stock TE with AA's, 1lb 3.2oz.  Fully modded express with additional cell, 1lb 0.5oz.

Oh definitely it'd be way lighter compared to 6 traditional AA alkaline batteries!! MNKyDeth apparently hasn't owned a cell phone and is unfamiliar with Lithium-Ion batteries...

[turbokon]

Added power and low battery led.

[wilykat]

That's pretty crazy man. 7hrs of run time with the battery pack and roughly 3.5hrs without? I think that is more than even current hand held game devices.

My PSP 2000 does about 10 hours with a rare Sony 2200Mah battery. But it is damned good for a 20 year old system.

That is one impressive Turbo Express!! How heavy is it? Need a harness to carry it around? lol

Same. I would love to get my TE modded with lipo someday.  With 3.5" LCD and a Turboeverdrive, I get as much as 700mAh draw and rechargeable AA's rarely last long due to them having only about 1.2v each and running low fast.

[famiac]

About to attempt this. Did you just wire the Powerboost 1000C to the pc engine's voltage regulator ouput? Are there other things that need to be done?

Also, just to maker sure i'm getting this right, where is the voltage regulator output pin?

thanks

[famiac]

I'd like to use the internal jack to charge the battery. How do i separate the internal ac adapter socket from the rest of the circuit board? Are you cutting traces?

[turbokon]

I'd like to use the internal jack to charge the battery. How do i separate the internal ac adapter socket from the rest of the circuit board? Are you cutting traces?

Yeah, I just cut the positive trace on the dc jack.  Big pad on regulator is the collector pin.

[famiac]

You connect the 5.2v to the collector?

You mentioned you used a voltage divider.
What's the impedance of the GT? Or, what value resistor did you use for the voltage divider?

[turbokon]

I ended up wiring to battery line and jumping from emitter to collector pin on voltage regulator.

[ltpitt]

Hi all!

I am sorry for necroposting but I do believe this mod is very interesting and keeping all the related information in a single post could also help others

My GT is fully stock and I wanted to ask if I can add a LiPo battery simply connecting its plus and minus to the plus and minus where normal batteries are connected.

Here you can find my childish idea in photo:
https://goo.gl/photos/hGwLbVVcee2duixg8

and

https://photos.google.com/photo/AF1QipPrMXojhOWNhXaD0B8e6VJCCCVAR5j0tgZX8trN

If this is not a wise idea to connect the battery this way can you kindly explain with more detail where I should connect the LiPo?
I have read that I should connect one side of it to the voltage regulator but I do not know where it is placed, how it looks and how I should hook it.

Thanks for your time and patience

[shugs81]

Is that not a USB charger you've used?? Could you not just drillna small hole in the battery cover and stick the charging circuit to that so the led shines through? If you wanted to do it that way... Maybe put something over Tue hole to keep it all in one piece....

[famiac]

Just to help out people who want to try this in the future (sorry for the necro)

This battery fits perfectly into the GT's compartment and has the right specs.

I used the adafruit powerboost 1000C, as suggested, and tied the 5.2V output directly to the voltage input pin of the AC adapter port. Still not sure where to cut if I want to separate the port from the rest of the console, since the solder mask is stupidly thick.