HOW TO REPAIR LAPTOP BATTERY ?

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HELLO MY FELLOW !

I AM WAQAR

here, i will show you how to repair your laptop battery for very cheap at home.

+WHY ?

The laptop batteries consists of lithium cell which are called 18650 cells

they are not eternal

they have life period of about 2 years

+WHEN TO REPAIR ?

when you see your laptop is charged fully but does not last even half an hour or less.

which means the cells inside the battery are dead.

Step 1: REQUIREMENTS

-1 old dead laptop battery from laptop repair shop

-1 your laptop battery (which you want to repair)

some wire & tools like wire cutter etc...

and also some electric tape

Step 2: OPEN THE OLD DEAD BATTERY

Use some tools to open the laptop battery without damaging the battery box

because the box will be used later.

Step 3: GET THE 6 CELLS OUT FROM OLD DEAD BATTERY

Take out the 6 cells which are in 2-2 parallel connection.

(don't break the parallel connection but cut the series connection)

Step 4: TAKE OUT YOUR MULTIMETER & CHECK THE VOLTAGE

THIS step is very important !

generally 3.6 or above volt batteries are good below this voltage are the bad ones

voltage test is just temporary solution for the capacity check of 18650 cells

i recommend to use imax b6 charger for capacity test.

JUST GET 6 GOOD (18650) LITHIUM CELLS OR BUY THEM FROM AMAZON OR EBAY

Step 5: NOW CONNECT CELLS IN SERIES CONNECTION

BY using some wire connect all cell in series connection

just check the overall voltage of battery pack

it should be around 12 volts .

Step 6: NOW OPEN YOUR ORIGINAL LAPTOP BATTERY

JUST open your original laptop battery and throw the cells because they are all useless & keep the circuit

(if you want to keep then check the capacity if some of them are good then keep them for future projects)

IMPORTANT:

don't damage the circuit or battery box while opening the battery .

Step 7: CONNECT THE CIRCUIT TO THE BATTERY PACK

NOW by using some wires connect the battery pack to the circuit

IMPORTANT:

you will see 4 wires coming out from the circuit in which the longest is negative.

the battery pack will also have 4 wires 1 is negative and 3 are positive (one to the end and two between the battery pack)

Step 8: CHECK BEFORE PACKING BATTERY

connect the battery circuit to the laptop

and press power button to see it's working or not

IMPORTANT:

if nothing happens after pressing power button

don't panic connect the charger to the laptop for 5 minutes then remove the charger.

(if again not working just contact me with your problem)

Step 9: SUCCESS! JUST PUT BATTERY AND CIRCUIT INSIDE THE BATTERY BOX

the final step to put battery pack and circuit in the battery box.

do it gently .

use some super glue or tape to fix the joint of battery box.

!!!!WE ARE DONE!!!!

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    101 Discussions

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    Rohanp83

    24 days ago

    Battery showing 100% charged but laptop shuts immediately when power chord are removed. Any suggestions ...... How to fix it

    1 reply
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    NelmarO1Rohanp83

    Reply 21 days ago

    I need to repair my battery NBP12A05

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    ArenM2

    26 days ago

    I need to repaire Fujitsu 10.8 volt Li-ion battery pack having 6 cells.
    Can i insert new Li-ion 3.7 v x 6 cells of 2200 mAH batteries ?

    0
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    ChrisD542

    Question 6 weeks ago on Step 8

    regards,
    following your instructions as described above, just as seen in step 8, the battery cells does not charge. kindly provide more insight. thanks

    0
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    AbhijitG14

    Question 6 weeks ago on Step 5

    Plz show the 6 cell lenovo laptop battery connection with connector in soldering with images .

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    ab1jx

    6 weeks ago

    I skimmed this whole article to see if anybody mentioned this stuff. There are smart batteries and not, the year doesn't matter that much. I have a Dell and an HP made the same year, the Dell battery is smart, the HP isn't. I replaced the HP with a battery from eBay and it's been fine for a few years, I tried 3 replacement (unofficial) Dell batteries before one worked. I've been collecting facts and URLs on this Raspberry Pi page https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=228114&p=1399041#p1399041 Smart batteries need to (at least) be reset when you replace cells. The "gas gauge" chip in the battery learns the charged and discharged voltages, you need to clear those. On the other hand you can have nicad, nimh and lithium packs that work in the same laptop, they report essentially a percentage charge back to the laptop so it doesn't need to track voltages. Matching series cells is an issue yes, but my Dell battery pack has 9 terminals, enough to have a connection between each pair of cells which would overcome this. I haven't gotten one open yet, that's what I came here for, to find the least damaging way to open one.

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    Sujeevan1

    Question 2 months ago

    Hi im sujeeva ,from srilanka.
    Thanks for your great explanation .i repair my nec laptop battery pack .i replace new 18650 four batterys .but its not working .the laptop displayed 0% battery .i attached image of that.please let me kno why is that not working .thank you.

    IMG-20181028-WA0006.jpgIMG_20181002_092353.jpg
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    RahulD124

    4 months ago on Step 8

    Sir I'm done almost all think properly BT when I connected the battery and puch to turn on button battery don't get any action when I connected charger the only power indicater shows not showing battery signal please help me

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    YomiD

    Question 6 months ago on Step 8

    I connected the battery after observing all your details but yet laptop says 0% battery plugged in, not charging.

    1 answer
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    AtthavutRYomiD

    Answer 6 months ago

    me too. i try to unplug and plug in again, it's now charge to 100%.

    but battery drain so fast, i don't know why

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    AtthavutR

    Question 6 months ago on Step 9

    after repair it's ok, but why battery drain so fast?

    i use all new 18650 battery.

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    OluwapelumiO1

    Question 7 months ago on Step 8

    Thanks, I have gone through this process and powered my laptop with the Ac power but the error message is 'plug in, not charging ' what do I do

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    MalikK8

    Question 8 months ago on Step 9

    hi, I followed your instructions but now the battery isn't charging. Any idea what causes it to not charge?

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    Ashp16

    Question 11 months ago on Step 8

    Hey there, I have HP Pavilion G6 laptop with battery MU06, which was not working from a month or so...after opening the battery i found out that 2 18650 batteries were showing 0 volts. I replaced those two with healthy 4.10 volts charged batteries from another laptop's battery pack. After repairing and inserting battery I got the error of replacing HP battery on my bootup window and now my laptop shows 100% fully charged battery but it works on live power and shuts off when i pull out the charger cable. Any suggestion please!

    3 answers
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    TigranA4Ashp16

    Answer 9 months ago

    Also is there some easy way to change battery without blocking Smart Chip.
    You have to reconect wires since high voltage (+) to (0).
    10,8-7,4-3,7-0.
    New batteries begins connect Via Vise.
    0-3,7- ...

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    TigranA4Ashp16

    Answer 9 months ago

    Hi.Modern Smart Battery has smart chip inside battery and suddanly fix if you reconnect some of battaries from package.
    Better solution for hack it You must do previosly simulate of voltage to chip,whit sone 12 volt adapter.only after that change battery and reconnect simulator!

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    pastorwoodyAshp16

    Answer 11 months ago

    It may be that the cells are not close enough in voltage to each other. If this is so, the charging circuit will not allow the pack to charge. Put your multimeter on the three sets of cells, see if any are lower (or higher) than the other two. If they are, my solution is to use a separate LiPo charger (available for a few GBP from Amazon) to charge up the low ones a bit until they are closer to the rest in voltage, then the pack should charge. Unless you have other problems as well, that is.

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    TigranA4

    9 months ago on Step 9

    Modern Smart battery has chip inside battery and without some voltage simulations or more expensive Reset trough PC adapter,You will get new but unworking condiction battery...

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    bheemrajb

    Question 9 months ago

    Waqar my laptop battery habe problem that it drains too fast becouse of it is 4 year old. When i took out the battery cell and chaked the power by multemeter all 6 cells shows 4.9 but it drains too fast and also it charging too fast... i dont what is the problem.cells show perfact voltage. My quetion is this how i can chack my battery cell parfectly to find out dead cell. ??

    1 answer
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    HOBBY TO MAKEbheemrajb

    Answer 9 months ago

    Just change all the cells in same configuration...
    Make sure the same configuration...
    Otherwise it can harm your laptop...