Topic: Battery Hack Success (Read 116 times)

ferrari_rulz_02 · « **on:** March 18, 2005, 02:57:00 AM »

thats awesome.
can you tell us what the number of the cap (on the mobo) is, so i knwo what one it was?

great idea

tutyet · « **Reply #1 on:** March 18, 2005, 05:12:00 AM »

very good, i like it!

so just to make sure we are on the same page, this is for softmodded xboxs right?

you may of just found a gap in the market, then again the whole point of softmodding is not to open the xbox!

but still great idea, i think i will try it!

ferrari_rulz_02 · « **Reply #2 on:** March 18, 2005, 05:48:00 AM »

itll work for any xbox. its just so that when teh xbox isnt plugged into the wall, the settings dont piss off on you

minnow · « **Reply #3 on:** March 18, 2005, 01:28:00 PM »

Cool. I've been modding for a year just using tuts, but I finally bought an electronics for dummies book to fill in the knowledge gaps. I've just finished reading about the stuff you just did. That's awesome. So was a large Farad capacitor much more expensive than your 2.4V battery setup? Either way, props to you.

So I'm assuming that the battery charges itself when the XBOX is on? Great work, again.

garyopa · « **Reply #4 on:** March 18, 2005, 04:04:00 PM »

Great idea.

BUT, TWO PROBLEMS:

1: The XBOX clock will still die after 4 days.

The power used by the mainboard, will kill the battery in less than 4 days,
after the voltage level drops due to it being drained the clock will still stop
running.

2: Overcharged battery if XBOX not off.

There is no CHARGing circuit in the XBOX to monitor the battery level,
so if you leave the XBOX ON and RUNNING for days at a time, you will
pickle the battery due to OVERcharging the cells.

Chancer · « **Reply #5 on:** March 18, 2005, 04:20:00 PM »

The battery will indeed overcharge. Wait till all the nice green gunge gets everywhere as it did in the ferguson VCRs that used that battery type (and they had the correct charging and monitoring circuit) Ask yourself one thing why do you think there is a back up capacitor in there in the first place. If the capacitor goes replace it like for like, they are widely available.
The clock never re-sets if you leave the plug in the power outlet.

ChInEsE ChIcKeN · « **Reply #6 on:** March 18, 2005, 05:06:00 PM »

one question why would you want a battery hack.... i mean God forbid you loose you date and time on your xbox..... you can always reset it when ever you feel like it..........its not like your daily commute relies on the xbox time and date.......

?

ferrari_rulz_02 · « **Reply #7 on:** March 18, 2005, 10:46:00 PM »

well all it neads is a charging circuit, and then it will do what you want it to. otehrwise you will kill the battery real quick

xman954 · « **Reply #8 on:** March 19, 2005, 01:15:00 AM »

QUOTE(RARusk @ Mar 19 2005, 01:30 AM)

"well all it neads is a charging circuit, and then it will do what you want it to"

YES a 220-750 ohm resistor and 2.5V zener or reference diode
but seeing how the orignal cap is ONLY rated for 2.5v
maybe just limiting the charging current with a resistor
in series with the red wire is OK
(voltage drop will small in the backup mode and, the larger the resistor the longer it will take to recharge if the source is not current limited)
you need to do some testing on this...
BTW; nice job...and let us know

Chon_Lee · « **Reply #9 on:** March 19, 2005, 01:44:00 AM »

QUOTE(RARusk @ Mar 19 2005, 07:30 AM)

"can you tell us what the number of the cap (on the mobo) is, so i knwo what one it was?

jesistehsux · « **Reply #10 on:** March 19, 2005, 02:41:00 AM »

QUOTE(Chon_Lee @ Mar 19 2005, 09:44 AM)

He has said that the box is unmodded up until now.... I am assuming that the mod that he is talking of now is the battery... therfore the sntp stuff will not work... standard xbox dashboard without live use does not support sntp. sorry.

ferrari_rulz_02 · « **Reply #11 on:** March 19, 2005, 03:30:00 AM »

QUOTE(xman954 @ Mar 19 2005, 06:21 PM)

YES a 220-750 ohm resistor and 2.5V zener or reference diode

RARusk · « **Reply #12 on:** April 02, 2005, 11:59:00 PM »

I recently took apart my Xbox to take close-up pictures of the motherboard for additional study and check up on the battery. The battery is just fine and is doing it's job very well.

I found the necessary RGB video and sync signals off of one of my PS2's motherboards. I did this to get around using sync chips and avoid the Component Video Forceback feature when you try to watch a movie in RGB Analog. I decided to study my Xbox motherboard to see where I could do the same. it would be very newsworthy if I could pull off the same stunt on the Xbox.

Because of all of the hacking I've been doing to my PS2 I haven't really been looking around for a charging circuit that can compliment my battery hack. I will probably try to Google some up later as I finish my PS2 work.

ferrari_rulz_02 · « **Reply #13 on:** April 14, 2005, 04:04:00 AM »

QUOTE(RARusk @ Apr 3 2005, 05:05 PM)

I will probably try to Google some up later as I finish my PS2 work.

TKramka · « **Reply #14 on:** April 21, 2005, 07:48:00 PM »

Author Topic: Battery Hack Success (Read 116 times)