Jump to content
  • Sign in to follow this  

    Clevo P150EM - Battery Cell Upgrade Success


    Khenglish

    So back when I got my P150EM, one of the deciding factors on getting it was that due to optimus/enduro, the battery life was respectable. I wanted the top hardware while still having some mobility. Over time though, the battery became more and more worn out, to the point where I hardly got over an hour of life out of it. New batteries are stupidly expensive, and Clevo used cheap cells for it in the first place. I wasn't paying $100 for a mediocre replacement battery. I decided to pay $50 for top end cells to boost capacity by 30% and get over 6h of battery life. I figured that this could get messy, and luckily a friend let me have his nearly dead P150HM battery for me to have some spare parts.

     

    So I swapped the cells, while destroying the plastic battery shell in the process, and got a battery that worked just like it still had the old cells. Figuring I needed to reprogram the EEPROM on the battery pack, I started removing the glue all over the EEPROM chip to get it in my programmer. I stupidly forgot that I was working on a  BATTERY, which meant that it was ALWAYS ON, and poured MEK over it, blowing a fuse.

     

    After getting pissed off and giving up for a few months, today I gave it another go. I got the EEPROM chip out and started taking guesses at how to reprogram it. If I guessed wrong, good thing the fuse was blown so I don't melt anything. I figured out that battery EEPROM contains the capacity info in terms of mAh for a pair of battery cells. I searched for the default 5200 mAh (1450 in hex) and found it. I then raised this to 6800 mAh (1A90 in hex). It was a success! Nominal battery capacity was now 100640 mAh total.

     

    So now I knew I could probably program things right after enough tries. It was now time to get the battery operational again. I bridged the fuse, and the battery came back to life. Sort of. It would charge when off, but not on. It would run, but windows reported no battery drain (infinite energy!?!?!?!?). In short, the battery EEPROM was not being updated at all as the battery state changed. I was under the impression that if  Ilet it charge, it would not stop until overvoltage protection kicked in, and if I let it discharge, it would not turn off until the system BIOS detected an undervoltage scenario, which is far below the safe discharge voltage of the battery. I figured for the time I'd just let it be and try to get the EEPROM right.

     

    Next was looking for the wear capacity. This is the capacity left in the battery as it ages. Using hwinfo64, I got the wear level, converted it to hex, and found it in the EEPROM. I then changed it to only 5% wear instead of 74%. I left some wear because I did let the cells sit for a few months, and I was directly soldering to the cells, which isn't really good for them due to the heat from the iron. This was a success. Current charge % correctly dropped as well.

     

    So now I needed to get the battery charging right. My only option was to rip apart my old, but fully functional P150EM battery. I found that the fuse was actually really weird with 3 prongs, and only 2 prongs were supposed to have 0 resistance. I had soldered all 3 together on the P150HM battery. I switched the EEPROM chips and boards, then hoped it would work and not require me to run and get the fire extinguisher.

     

    It worked! The battery is now charging properly as I type this. It also discharges right too. It looks like the laptop will try to overcharge it a bit since the current charge % was a little low vs reality, but that should just give it a little extra wear, with the charge % being calibrated properly at 100%.

     

    mbgQXIR.png

     

    9OMCtUR.png

     

    rJ8Isnq.jpg?2

     

    I'm not sure how I'm going to get that back in the shell...

     

    Continue discussion in original thread here. 


    • Thumbs Up 7
      Report Article
    Sign in to follow this  


    User Feedback


    Wow that's some really nifty thing. But why go through all that if you can find a $50 battery replacement?

    Share this comment


    Link to comment
    Share on other sites

    Where do you see $50? The lowest I see is mid $80s. At the time it was difficult to find anything under $100.

    Share this comment


    Link to comment
    Share on other sites

    I have a desire to repeat this. Could you tell what EEPROM chip is used here? And which programmer did you use?
    Many laptop batteries are irreversibly blocked when the voltage is removed or if when voltage just changes fast. Has not this happened to p150em battery?

    Share this comment


    Link to comment
    Share on other sites


    Create an account or sign in to comment

    You need to be a member in order to leave a comment

    Create an account

    Sign up for a new account in our community. It's easy!

    Register a new account

    Sign in

    Already have an account? Sign in here.

    Sign In Now

  • Similar Content

    • By captcavy
      Hello everyone,, I need your expertise, I have a m17 r4, (2012) unlocked A15 bios thanks to Klem, it has a Gtx 675m in it now, 
      I would like to know the best GPU to upgrade to without losing a lot of the factory functions of the alienware laptop, like being able to use both VGA functions such as intel 4000, and the factory bios for the cooling of the GPU, I don't want to solely rely on the nvidia
      As a full dedicated GPU, let me know what VGA card to get and what vbios to use, I will gladly donate beer to you for your help, or point me to a member on this forum who can help me,
      Thanks, Shelby,  Aka captcavy
    • By yoshomiamoto
      Hello Fellow Tech Gurus!

      I am having a huge headache after upgrading the ram memory of my m17x r3. 

      First let me start by saying I have been experiencing issues with my current ram setup recently, and so i decided to replace the ram inside of my computer, thinking they had gone out on me. It originally came with x4 2gb memory sticks, and as I started to experience issue, I started to removed them, and I was down to 1 2gb stick. It seems to me ram slots 1 & 2 are not working properly as when I put ram memory into them I would get BSOD in 5-10 mins of computer usage after boot. So I am thinking the slots have gone out. I also tested each slot individually and still same effect.

      So I went on the try out slots 3 & 4 under the keyboard, which seems to work just fine when I use only 1 ram chip in one or the other. But the problem occurs when I try and fill both ram slots in slots 3 & 4 under the keyboard with crucial 2x 8 gb of ram sticks, which total to 16gb total ram memory.

      BSOD and freezing occurs like crazy. But if I use just one of the ram sticks in either slot, no problem.

      I dunno if this is hardware or software. I am think that my motherboard is on its way out the door, but any suggestions you all have would be great. I have already clean installed win 7, and is currently running bios A10 (unlocked, I believe)

      I would also like to note that my motherboards internal vga is not detected, and just noticed this a few days ago upon trying to figure out the ram situation.

      other issues is my laptop battery is pretty much dead, and the only for my computer to cut on is if the AC adapter is connected

      I would also like to know can 1x 16gb 1600 ram stick run in my computer? or is it not supported by my motherboard? 

      thanks!

      Specs:

      Alienware M17xR3 (2011 3D FHD ed)

      Service Tag:
      30W75Q1

      Bios ver:
      A10 (should be unlocked)


      Operating System
      Microsoft Windows 7 Home Premium (64-bit)

      Processor
      Intel® Core™ i7-2960XM CPU @ 2.70GHz

      Chipset
      Intel® 6 Series/C200 Series Chipset Family

      Graphics
      Nvidia GTX 680m

      Audio
      IDT High Definition Audio CODEC
      High Definition Audio Device

      Networking and I/O
      DW1501 Wireless-N WLAN Half-Mini Card
      Atheros AR8151 PCI-E Gigabit Ethernet Controller (NDIS 6.20)
      HMA TAP-Windows Adapter V9

      Memory
      Crucial 8 GB (x2 qty) DDR3 PC3-12800 • CL=11 • Unbuffered • NON-ECC • DDR3-1600 • 1.35V • 1024Meg x 64 •

      (these only work under bay 3 or 4, but not dual 8gb at the same time, otherwise BSOD)

      Configuration ID:
      CT3283724

      Storage
      WDC WDBNCE5000PNC SSD (installed into bay 0)
    • By Reaversword
      Hi, new in the forum, trying to find some help, someone points me in the right direction.
       
      Long story short: Clevo p170hm3 from 2011, gtx485m card dead, new card from ebay, it doesn't works correctly.
       
      I've read about Clevo brand signature, Prema posts about 3dvision license between hardware from ir emitter, gpu and motherboard, Prema modified bios to get gtx580 working too with 3dvision, svl7 (now retired) vbios, and more, but basically, I'm still confused enough to know what should I do and what are the right steps to get my p170hm3 back to life.
      Last card I could buy was a gtx675m, but I couldn't find vbios (original, not-moded from Clevo), the Clevo vbios list "jumps" from gtx670m to gtx680m with no mention to gtx675m , and I read some posts about convert a 675 to a 580 and viceversa, I think it was changing some physical resistances, and some number in vbios, but I'm not modder, no idea really about.
       
      So, What I should do?. Sell 675m and try to get a gtx580m, and use original clevo vbios on it?, it will work, or my computer won't be able to use it?. I bought my computer before gtx580m was released... I would need to update bios to get it working?
       
      Or unlock graphic card restrictions with the latest prema bios mod (if that is possible). There is some chance get 675m working?
       
      Are all mods and files I need in this forum? (ask this because I can't see/access the files, because I'm new in the community)
       
      What options I really have?.
       
       
      I hope someone can clarify me a little bit this situation.
       
      Thanks in advance.
    • By shogun
      premamod.com
      biosmods.wordpress.com
      premamod.wordpress.com
      techinferno.com/index.php?/profile/259-prema/&do=content&type=downloads_file
       
      Which one of the above is the official website dedicated to Prema BIOS mod and why they all seem dead? Including the last one - according to TechInferno, Prema's last visit here was on Dec 2, 2016. Is Prema long done with creating custom firmware?
    • By thechillhacker
      Hello all
       
      I have a Clevo P370EM3 laptop with a pair of GTX 680Ms in SLI mode and have never been able to get Linux to work properly with full acceleration and without tearing. I have tried every xorg config I can find, and even all the modifications from the nvidia configurator to no avail. Has anyone been able to get these things to work 100% in Linux? I have typically used ubuntu based distros, including Mint, and every available driver version from the repositories, but can never get it to work quite right.
       
      Thanks for any help anyone can provide. It is killing me to run Windows on this machine because of these issues, and I am almost to the point of installing the inferior 7970 cards.
       
      Have a great day
      -TCH
×

Important Information

By using this site, you agree to our Terms of Use. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.