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Thread: Using car battery in UPS

  1. #1
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    Lightbulb Using car battery in UPS

    Warning: Use this mod completely at your own risk. Not only do you void your warranty, but you may severely damage your unit, shock yourself and may pose a potential fire hazard.

    Summer is here for quite some time and you people must be aware of the intense heat up in the neighborhood. Life would have been a lot easier if this heat was the only pain in the neck. Up lately electricity is a massive problem all over the country and in my area, Mirpur, there is no exception. Hours daily I have to spend time in total boredom. So finally, in the curiosity of finding a temporary solution to this electricity problem, I opted the unusual idea of using a car battery in my UPS. Yes, you've guessed right. This is not the way it was meant to be played but I did. My cousin had an old mercury 600VA UPS with a fried battery at his store room. I brought it and removed the battery. Upon googling, I found this: http://www.dansdata.com/upsupgrade.htm

    I went forward and bought a cheap car battery at Tk.3200 from a local battery dealer. I then soldered two cables on the battery connectors inside the UPS and got the other ends of the cable out through a hole at the back. Then I soldered two battery clips on the ends and connected the battery to them. I powered on the UPS and it started to work immediately! With the CPU (an old Celeron PC with 400W fake PSU) only, the UPS lasts about three and half hours without charge. With a 15" CRT monitor the time drops to just above two hours. With an LCD the time would be lot better though.

    I would try the same with my other UPS with my big PC soon.

    Here is what I used:
    1. A Mercury 600VA genuine UPS (local ones or Chinese third grades won't work)
    2. A Royal 12volts, 35amp-hours, 11plates low maintenace car battery
    3. A set of battery clips
    4. Extra low resistance cable (I mean it. Use really thick ones, the ones used for power lines)
    5. Black and red tapes
    6. Screw driver
    7. Pliers
    8. Patience

    I made some calculations on different power ratings to get the same backup time as mine and you may refer to this requirements to make your custom UPS:
    Click image for larger version. 

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    Here are the pics below. Note the labels:

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  2. #2
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    Default Re: Using car battery in UPS

    Nice job, its nothing new though.
    I am looking for good car battery in around 5k, any idea?
    Any idea where to find second hand car batteries? and how to check them?

    And can any one confirms that if is it possible to use 2 same model ups with one battery? (to get better output and quickly charge the battery)?
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    Default Re: Using car battery in UPS

    accha how much did it cost in total!?
    EDIT: you mean the UPS lasts full 2hrs with a CRT monitor?
    Last edited by dipanzan; July 13th, 2010 at 02:32.

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    Default Re: Using car battery in UPS

    Thread Moved.
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    Default Re: Using car battery in UPS

    @mdtahmid you would be surprised how many people use car battery with their UPS. Many shops around nobabpure use this trick.

    I would suggest this method ONLY when you can make sure that the battery is placed in a well ventilated place because usage of car battery within household environment can g8ly pollute the the very air that you inhale every second..

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    Lightbulb Re: Using car battery in UPS

    We use car battery for our IPS in home & my father is a car's baterry's businessman .....

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    Default Re: Using car battery in UPS

    Quote Originally Posted by minitt View Post
    @mdtahmid you would be surprised how many people use car battery with their UPS. Many shops around nobabpure use this trick.

    I would suggest this method ONLY when you can make sure that the battery is placed in a well ventilated place because usage of car battery within household environment can g8ly pollute the the very air that you inhale every second..
    thanks. i should not bother about this method.cause my pc is located in a very tight place.

    @mdtahmid

    hey thanks for posting this.anyway did you take any electrical training course?how do you know so much about these stuff?you are only 17 that's why i am asking.

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    Default Re: Using car battery in UPS

    Yeah i thought about it couple of times....now the thing....car batteries and the batteries used in UPSs are the same....car batteries are Lead/Acid batteries.....the time the ups can run totally depends on the amount of storage power it has.....most normal UPSs has 7-10 amp hr sealed lead/acid battery.......which translates to around 5-15min backup time...

    Tahmid used a 35 amphr battery...which provided this huge backup time...

    now with any backup devices one more thing is really important....that is the charger circuit.....you see the battery needs to charge itself up to full power to backup again....now if the ups has a high amp charger than it will provide backup....you see to charge this battery to full in one hr you need a 35 amp charger...which is costly as hell....and most ups s dont have heavy chargers....may be a 5amp one.......which will take full 7-9hrs to charge it back up fully...

    now the scenario.....say you had a power outage which lasted for a hr......than your battery is say depleted half.....now say the power remains for another hr....and after that the power goes fishing for another hr...now your battery has to charge up the lost charge during the 1 hr power was on....if you dont have a good charger it will not charge fully...and this circle will continue and in a few days you will have a ups running on the edge of the batteries lower capacity...which eventually will destroy it....


    @ Amarex...i think it i possible...but you have to provide really good notice to terminals....if you connect them wrong it will destroy one of the ups s.....and using the same model makes sense....cause they will have the same charger......different powered chargers is not good...

    @Kungfu: this is really normal electronics......just replacing a battery kinda thing.....say you replace your phones battery with a more powerful one...

    and now a days internet has its uses...

    and kudos tahmid........you did it really good.....and keep up bro...

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    Default Re: Using car battery in UPS

    Quote Originally Posted by avas911 View Post
    @Kungfu: this is really normal electronics......just replacing a battery kinda thing.....say you replace your phones battery with a more powerful one...

    and now a days internet has its uses...
    ok thanks.

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    Default Re: Using car battery in UPS

    Quote Originally Posted by kung fu panda_4444 View Post
    thanks. i should not bother about this method.cause my pc is located in a very tight place.

    @mdtahmid

    hey thanks for posting this.anyway did you take any electrical training course?how do you know so much about these stuff?you are only 17 that's why i am asking.
    Hmmm...this stuff requires no training course you see:closedeyes:. I have been using these tools for a lot of years as I had a great interest towards electronics. I have the habit of disassembling old electronics and seeing what is in them. Moreover, internet has been a great companion to me over the years. Even a rookie can be an expert in a few days sitting in front of his PC with net.

    Quote Originally Posted by avas911 View Post
    Yeah i thought about it couple of times....now the thing....car batteries and the batteries used in UPSs are the same....car batteries are Lead/Acid batteries.....the time the ups can run totally depends on the amount of storage power it has.....most normal UPSs has 7-10 amp hr sealed lead/acid battery.......which translates to around 5-15min backup time...

    Tahmid used a 35 amphr battery...which provided this huge backup time...

    now with any backup devices one more thing is really important....that is the charger circuit.....you see the battery needs to charge itself up to full power to backup again....now if the ups has a high amp charger than it will provide backup....you see to charge this battery to full in one hr you need a 35 amp charger...which is costly as hell....and most ups s dont have heavy chargers....may be a 5amp one.......which will take full 7-9hrs to charge it back up fully...

    now the scenario.....say you had a power outage which lasted for a hr......than your battery is say depleted half.....now say the power remains for another hr....and after that the power goes fishing for another hr...now your battery has to charge up the lost charge during the 1 hr power was on....if you dont have a good charger it will not charge fully...and this circle will continue and in a few days you will have a ups running on the edge of the batteries lower capacity...which eventually will destroy it....


    @ Amarex...i think it i possible...but you have to provide really good notice to terminals....if you connect them wrong it will destroy one of the ups s.....and using the same model makes sense....cause they will have the same charger......different powered chargers is not good...

    @Kungfu: this is really normal electronics......just replacing a battery kinda thing.....say you replace your phones battery with a more powerful one...

    and now a days internet has its uses...

    and kudos tahmid........you did it really good.....and keep up bro...
    Avas bro I kept the charging in mind before making this mod you see. I had a look at this:
    Click image for larger version. 

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    Car batteries start to sulfatize and lose life quickly when they are more than 70% discharged i.e. their voltage dropping to 12v. For the time being I have to use my multimeter and check the battery voltage, disconnecting one of the contacts every three hours or so to see whether the voltage drops to or is below 12.5v. I am running my PC a.k.a. home server headless i.e. without a monitor. Moreover, the PC has no optical drives and only a single HDD. So power consumption will be less. The minimum voltage after seven loadsheddings in one day (with one hour breaks in the middle) is 12.3 volts. Then the battery charges for the whole night and is ready for tomorrow. I have to go to Nawabpur and get me a good 12v charger soon to make sure my battery is charging properly

    And about ventilation, I have my windows at both sides of the room. The gas given of is Hydrogen which is pretty flammable. So a fan nearby can easily push it away. To everyone: if you have a very crammed PC setup or cannot manage a good ventilation near you PC, you can buy long wires and place the battery near a window. That would just do.

  11. #11
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    Default Re: Using car battery in UPS

    Looks like you thought of everything...

    and you can make one....a 12v switching charger not that complex...it requires couple of fets and couple of voltage regulators....and i am not sure but....i think it is possible to use a PC PSU as a charger....:S

  12. #12
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      • RAM:
      • Transcend 2GB DDR3 (@1066MHz)
      • Hard Drive:
      • Western Digital Caviar BLACK 1TB &amp; Seagate GoFlex Desk External 3TB
      • Graphics Card:
      • Sapphire ATi Radeon 5550
      • Display:
      • DELL P2211H 21.5&quot; LED LCD (@1080p)
      • Sound Card:
      • Creative Audigy Value 7.1
      • Speakers/HPs:
      • Creative GIGAWORKS T3 / Bose IE2
      • Keyboard:
      • Razer BlackWidow Ultimate
      • Mouse:
      • Microsoft Comfort Mouse 6000
      • Power Supply:
      • Thermaltake Lightpower 430W
      • Optical Drive:
      • UPS:
      • GreenPower 600VA powered by a 85AH IPS Battery which gives me 3.5hours of backup
      • Operating System:
      • Windows 7 Ultimate 32bit (Pirated)
      • Comment:
      • Not so bad for normal usage. I don't have any time to play games right now.
      • ISP:
      • Link3 1532kbps Night Doubler
      • Download Speed:
      • 180-360
      • Upload Speed:
      • 180*360
      • Console:
      • 8
    Deep -xCross-'s Avatar
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    Default Re: Using car battery in UPS

    amar 85AH er battery.. eita lagano kono byapar na..
    seeing is believing..

  13. #13
    Member
    • @bhi's Gadgets
      • Motherboard:
      • Gigabyte Z87X-UD3H
      • CPU:
      • Intel Core i5 4670k
      • RAM:
      • Samsung 30nm 2x4GB
      • Hard Drive:
      • WD10EZEX 1 TB + Seagate 120GB
      • Graphics Card:
      • Gigabyte HD7950 3GB WF3
      • Display:
      • Samsung 20&quot; LED BX-2035
      • Sound Card:
      • Creative SoundBlaster Z
      • Speakers/HPs:
      • Microlab Solo 7C
      • Keyboard:
      • Logitech K-120
      • Mouse:
      • Logitech mx518
      • Controller:
      • XBOX 360 wireless controller
      • Power Supply:
      • Seasonic X-650 km3 80+ Gold
      • UPS:
      • Luminous Solo 1200 VA
      • Operating System:
      • Windows 8.1 x64
      • ISP:
      • Link3 512kbps
      • Download Speed:
      • ~60
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      • ~55
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    Default Re: Using car battery in UPS

    charge hoite koto time lage??

  14. #14
    Sola Boot Muri™
    • Deep -xCross-'s Gadgets
      • Motherboard:
      • ECS G41T-R3
      • CPU:
      • Intel Pentium D E5400 (@2.7Ghz)
      • RAM:
      • Transcend 2GB DDR3 (@1066MHz)
      • Hard Drive:
      • Western Digital Caviar BLACK 1TB &amp; Seagate GoFlex Desk External 3TB
      • Graphics Card:
      • Sapphire ATi Radeon 5550
      • Display:
      • DELL P2211H 21.5&quot; LED LCD (@1080p)
      • Sound Card:
      • Creative Audigy Value 7.1
      • Speakers/HPs:
      • Creative GIGAWORKS T3 / Bose IE2
      • Keyboard:
      • Razer BlackWidow Ultimate
      • Mouse:
      • Microsoft Comfort Mouse 6000
      • Power Supply:
      • Thermaltake Lightpower 430W
      • Optical Drive:
      • UPS:
      • GreenPower 600VA powered by a 85AH IPS Battery which gives me 3.5hours of backup
      • Operating System:
      • Windows 7 Ultimate 32bit (Pirated)
      • Comment:
      • Not so bad for normal usage. I don't have any time to play games right now.
      • ISP:
      • Link3 1532kbps Night Doubler
      • Download Speed:
      • 180-360
      • Upload Speed:
      • 180*360
      • Console:
      • 8
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    Default Re: Using car battery in UPS

    Check out my setup:

    1. Battery (85AH).. just wire er matha soldier (battery er shathe na) kore shokto kore lagalm..

    Click image for larger version. 

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    2. Sine Wave UPS..

    Click image for larger version. 

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    3. Backside of my UPS. The white cable is ~60feet long and went to my room along with ethernet cable. Cable tar moddhe 2ta taar ase.. kono earthing nai.. 3ta taar wala cable er daam beshi ..

    Click image for larger version. 

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    4. Amar room ee ashar por earthing er line nilam..

    Click image for larger version. 

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    5. then amar desk er niche thik moto shobkisu wiring korlam.. done!

    Click image for larger version. 

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    seeing is believing..

  15. #15
    Member
    • @bhi's Gadgets
      • Motherboard:
      • Gigabyte Z87X-UD3H
      • CPU:
      • Intel Core i5 4670k
      • RAM:
      • Samsung 30nm 2x4GB
      • Hard Drive:
      • WD10EZEX 1 TB + Seagate 120GB
      • Graphics Card:
      • Gigabyte HD7950 3GB WF3
      • Display:
      • Samsung 20&quot; LED BX-2035
      • Sound Card:
      • Creative SoundBlaster Z
      • Speakers/HPs:
      • Microlab Solo 7C
      • Keyboard:
      • Logitech K-120
      • Mouse:
      • Logitech mx518
      • Controller:
      • XBOX 360 wireless controller
      • Power Supply:
      • Seasonic X-650 km3 80+ Gold
      • UPS:
      • Luminous Solo 1200 VA
      • Operating System:
      • Windows 8.1 x64
      • ISP:
      • Link3 512kbps
      • Download Speed:
      • ~60
      • Upload Speed:
      • ~55
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    Default Re: Using car battery in UPS

    where did u get that sine wave UPS?? in BD and i can see a cooling fan. pls mention it also the price and brand

  16. #16
    Sola Boot Muri™
    • Deep -xCross-'s Gadgets
      • Motherboard:
      • ECS G41T-R3
      • CPU:
      • Intel Pentium D E5400 (@2.7Ghz)
      • RAM:
      • Transcend 2GB DDR3 (@1066MHz)
      • Hard Drive:
      • Western Digital Caviar BLACK 1TB &amp; Seagate GoFlex Desk External 3TB
      • Graphics Card:
      • Sapphire ATi Radeon 5550
      • Display:
      • DELL P2211H 21.5&quot; LED LCD (@1080p)
      • Sound Card:
      • Creative Audigy Value 7.1
      • Speakers/HPs:
      • Creative GIGAWORKS T3 / Bose IE2
      • Keyboard:
      • Razer BlackWidow Ultimate
      • Mouse:
      • Microsoft Comfort Mouse 6000
      • Power Supply:
      • Thermaltake Lightpower 430W
      • Optical Drive:
      • UPS:
      • GreenPower 600VA powered by a 85AH IPS Battery which gives me 3.5hours of backup
      • Operating System:
      • Windows 7 Ultimate 32bit (Pirated)
      • Comment:
      • Not so bad for normal usage. I don't have any time to play games right now.
      • ISP:
      • Link3 1532kbps Night Doubler
      • Download Speed:
      • 180-360
      • Upload Speed:
      • 180*360
      • Console:
      • 8
    Deep -xCross-'s Avatar
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    Default Re: Using car battery in UPS

    Price: 8,000tk (without battery) (discounted)
    Brand: GreenPower
    seeing is believing..

  17. #17
    Member
    • Arman.Zmn's Gadgets
      • Motherboard:
      • Alienware M17xR3
      • CPU:
      • Intel(R) Core(TM) i7-2630QM CPU @ 2.00GHz
      • RAM:
      • 16gb(4+4+4+4)
      • Hard Drive:
      • Samsung SSD 840 EVO 240GB + Samsung 1 TB + Samsung 1 TB
      • Graphics Card:
      • AMD Radeon HD 6970M (Dell)
      • Display:
      • Samsung P2350 23'' full HD 1920x1080 + Laptop 17.3&quot; LCD
      • Sound Card:
      • onboard
      • Speakers/HPs:
      • Klipsch Audio
      • Keyboard:
      • A4Tech
      • Mouse:
      • Corsair M90 Gaming Mouse
      • Controller:
      • XBox 360
      • Optical Drive:
      • ASUS DVD RW
      • USB Devices:
      • 3x1TB Transcend StoreJet
      • UPS:
      • APC Smart UPS 1500VA
      • Operating System:
      • windows 7 x64
      • Comment:
      • i'm lovin it
      • ISP:
      • Link3
      • Download Speed:
      • 3 Mbps
      • Upload Speed:
      • 1.5 Mbps

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    Default Re: Using car battery in UPS

    @xCross
    koto VA & watt output er UPS??

  18. #18
    Moderator
    • minitt's Gadgets
      • Motherboard:
      • Asus Sabertooth Z170 S
      • CPU:
      • Intel Core i7 6700K
      • RAM:
      • Corsair Vengence 3200mhz White Led
      • Hard Drive:
      • Samsung 830 (128GB) +1TB HDD
      • Graphics Card:
      • GTX 780 With Titan HS
      • Display:
      • Samsung KS8000 55&quot;
      • Sound Card:
      • On board
      • Speakers/HPs:
      • Yamaha Reference Monitor
      • Keyboard:
      • Logitech G710+
      • Mouse:
      • Logitech G900 Chaos Spectrum
      • Power Supply:
      • Antec HCG-620M Modular
      • Optical Drive:
      • Nai
      • UPS:
      • dont need 1
      • Operating System:
      • Genuine Windows 10
      • ISP:
      • Shaw Cable
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      • 94Mbps
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    Default Re: Using car battery in UPS

    ok i hate to open another thread on ups mod but interested users can pm me if they want.

    Few years ago i wrote a DIY where i demonstrated, how You can have a PC automatically Shutdown itself and then switch off the ups on its own as well when the power goes out.

    Even when the power comes in the UPS will auto wake up by itself (no need to switch it on by hand) and then turn the PC back on. The whole process doesn't require any kind of user interaction. So u can have a 1 week holiday or more without worrying about your 24/7 torrenting / downloading.
    Last edited by minitt; July 14th, 2010 at 00:59.

  19. #19
    Member
    • @bhi's Gadgets
      • Motherboard:
      • Gigabyte Z87X-UD3H
      • CPU:
      • Intel Core i5 4670k
      • RAM:
      • Samsung 30nm 2x4GB
      • Hard Drive:
      • WD10EZEX 1 TB + Seagate 120GB
      • Graphics Card:
      • Gigabyte HD7950 3GB WF3
      • Display:
      • Samsung 20&quot; LED BX-2035
      • Sound Card:
      • Creative SoundBlaster Z
      • Speakers/HPs:
      • Microlab Solo 7C
      • Keyboard:
      • Logitech K-120
      • Mouse:
      • Logitech mx518
      • Controller:
      • XBOX 360 wireless controller
      • Power Supply:
      • Seasonic X-650 km3 80+ Gold
      • UPS:
      • Luminous Solo 1200 VA
      • Operating System:
      • Windows 8.1 x64
      • ISP:
      • Link3 512kbps
      • Download Speed:
      • ~60
      • Upload Speed:
      • ~55
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    Default Re: Using car battery in UPS

    Quote Originally Posted by xCross View Post
    Price: 8,000tk (without battery) (discounted)
    Brand: GreenPower
    discontinued?? but their site is still running?? http://www.greenpoweree.com

    ---------- Post added at 00:04 ---------- Previous post was at 00:02 ----------

    Quote Originally Posted by minitt View Post
    ok i hate to open another thread on ups mod but interested users can pm me if they want.

    Few years ago i wrote a DIY where i demonstrated, how You can have a PC automatically Shutdown itself and then switch off the ups on its own as well when the power goes out.

    Even when the power comes in the UPS will auto wake up by itself (no need to switch it on by hand) and then turn the PC back on. The whole process doesn't require any kind of user interaction. So u can have a 1 week holiday or more without worrying about your 24/7 torrenting / downloading.
    give the link of ur writeup or mention the whole thing it would be helpfull for many[COLOR="Silver"]
    Last edited by minitt; July 14th, 2010 at 01:12.

  20. #20
    Moderator
    • minitt's Gadgets
      • Motherboard:
      • Asus Sabertooth Z170 S
      • CPU:
      • Intel Core i7 6700K
      • RAM:
      • Corsair Vengence 3200mhz White Led
      • Hard Drive:
      • Samsung 830 (128GB) +1TB HDD
      • Graphics Card:
      • GTX 780 With Titan HS
      • Display:
      • Samsung KS8000 55&quot;
      • Sound Card:
      • On board
      • Speakers/HPs:
      • Yamaha Reference Monitor
      • Keyboard:
      • Logitech G710+
      • Mouse:
      • Logitech G900 Chaos Spectrum
      • Power Supply:
      • Antec HCG-620M Modular
      • Optical Drive:
      • Nai
      • UPS:
      • dont need 1
      • Operating System:
      • Genuine Windows 10
      • ISP:
      • Shaw Cable
      • Download Speed:
      • 94Mbps
      • Upload Speed:
      • 20mbps
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    Default Re: Using car battery in UPS

    This mod is only meant for advance users because it will cost dearly if u misunderstand my instruction. The The last time i wrote this DIY very few ppl got the hang of it. Felt hopeless It took nearly 2 hr and half just to picture and write it down. im not gona put that much effort again if ppl find it wayy too complicated.

    btw i still have the pix and instruction lemme know if u want. and YES i already have the MOD up n running in my system.
    Last edited by minitt; July 14th, 2010 at 01:26.

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