Inside Alienware 15 battery

Discussion in '2015+ Alienware 13 / 15 / 17' started by judal57, Mar 7, 2017.

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  1. judal57

    judal57 Notebook Deity

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    if someone was wondering to know the model of the cells used like me, here can you see it:
    [​IMG]
    [​IMG]
    [​IMG]

    that thing is almost imposible to open without damaging the case, BUT i found that you can replace the cells without opening it entirely:
    [​IMG]

    there under those 2 stickers you can find that it have a little layer of plastic covering the cells.
    I will try to find a ways to fix this crappy battery, i am not going to buy a third battery
    if i cant fix it, i will think on change the entire set of cells and use another brand
     
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  2. Papusan

    Papusan JOKEBOOK's Sucks! Dont waste your $$$ on FILTHY

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    Talk with @t456 He is probably the best qualified person for this.
     
  3. judal57

    judal57 Notebook Deity

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    @t456 could you help me please
     
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  4. Ashtrix

    Ashtrix ψυχή υπεροχή

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  5. rinneh

    rinneh Notebook Prophet

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    The cells are typical li-ion cells that are available from a lot of brands. But I do not know if the "Computer" inside the battery pack needs to be reprogrammed. So battery packs jsut accept new battery cells without any issues. Others refuse to work ever again.

    Dell mostly uses Toshiba batter cells in Alienware laptops by the way.
     
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  6. Vasudev

    Vasudev Notebook Nobel Laureate

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    @rinneh and @judal57: Do you guys know where to get original AW battery after warranty runs out and battery dies out? I can't find price of battery on Dell India website.
     
  7. Papusan

    Papusan JOKEBOOK's Sucks! Dont waste your $$$ on FILTHY

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    Call Dell-AW support for your area. + Places like Amazon-Ebay
     
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  8. t456

    t456 1977-09-05, 12:56:00 UTC Moderator

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    It's an LG 18650 E1 3200mAh.

    That is a serious cell; very few can match its measured capacity. However, the label states charge voltage max. 4.35V, whereas 4.2V is the norm for 3.7V Li-Ion. Now, every cell can be charged to higher voltages (increasing capacity), but that always comes at the expense of increased wear. So if that's what they've done to the 15's battery pack then that might explain your 'crappy battery' experience. If you meant that run time was low direct from the start then look elsewhere; some process may be drawing inordinate amounts of power or perhaps one half of this strange split-pack has failed. It's a 4-series, 2-parallel design (4S2P), so one x4 set failing wouldn't kill the pack, but it would slash the capacity in half.

    If you want to replace them then compare cells at 4.2V only and rewrite the firmware accordingly. Made a guide here (firmware is covered later on). A spot welder might also be nice in case you don't want to be limited to pre-tabbed cells (soldering directly to batteries is next to impossible using a normal iron). Pretty expensive though, unless you diy that, too.
    Well ... not easy, sure, but it's the challenge that make things interesting, no?

    The reports on 'suddenly' dead packs after dyi'ing can't be telling the whole story. It is just technology, after all, not magic :vboops: . One potential issue is using cells too far discharged below the safety threshold, so they cannot be charged back. Other than that there should be no issues. Even the firmware is 'plain'; no data scrambling or any other safety measures.
     
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  9. judal57

    judal57 Notebook Deity

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    @t456 my problem is that i used this battery as much 50 cycles and it died entirely, giving me the error on boot that say " your battery have experienced permanent failure, you have to replace it" also i had the warning at 30% on my battery plan to charge it again. My laptop is permanent plug in to the wall, but i discharge the battery once a week. as you say Dell force the battery to work at 4,35. can i reduce the max voltage to charge the cells to a safer value, something like 4 or 3,8V ??? i can live with less battery life if it increase his lifespan. the battery last a lot when it worked, normally 5 hours, 5,5h while web browsing on Chrome. i use a m.2 drive (samsung 850 EVO) as main drive, so it helps a lot. i like the battery specs too, but from my experience the cells wear really quick and die soon
     
  10. rinneh

    rinneh Notebook Prophet

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    The max voltage is higher only in case if you have express charge enabled. if i am correct the default voltage when express charge is disabled is lower.

    But it is strange the pack died that quickly, mine is more than a year old now and stil only at 1.8% wear. But my cycle count is lower, around 25. I never fully discharge it, only partial discharges.

    My R1 didnt had any battery wear after 1 year as well.

    Search the part number online and you will find a lot of shops at that moment that sell it. I dont have it on my mobile phone now. I can check it later for you.
     
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