How to replace battery cells inside laptop battery

How to replace battery cells inside laptop batteryserial, 3 serial and 3 parallel and 3 parallel and 4
In the last article, we have introduced "how toserial (relatively rare).
hack dead laptop battery" to our readers, but it is
too simple. Now we write a detail article about "Protection panel
how to replace battery cells inside laptop battery".Protection board, which is based on an agreement
At present, there are many articles about "howSMB1.1 circuit board, with power management
to purchase and use laptop battery" on thefunctions and charge-discharge management.
network , but there are too less article aboutProtection board, which is based on an agreement
"how to repaire laptop battery". For this reason,SMB1.1 circuit board. There are three chips on it :
we decided to write a article about,laptop batterybattery Measurement management chip, charge
repair industry to help notebook users know whatand discharge management chip and serial
to do when laptop battery broken.EEPROM memory chips
To notebook the battery is very important as
the mobile work. The notebook become toProtection board
desktop without laptop battery. There are
battery cells and protection board in laptopOn positive plate : measuring management chip
battery inside. The batteries cells supply theand charge-discharge management chip
power and the proctection panels protect the
board safety when charging. Battery cells areThe plate back has a serial EEPROM memory
consumable items, the capacity reduce in eachchips
using, which directly determine the quality ofDecrypt and unlock the protection board are two
notebook batteries.different works. Before you go into the battery
Notebook battery life short suddenly , cant work,management system you must decrypt the
laptop battery down suddenly (such as: batteryprotection board, unlock the battery management
capactiy suddenly reduce from 40% to 10%system in order to change the parameters of the
when working), laptop battery cant be fullybattery and use of information. If you only
charged,notebook battery cant be fully dischargedchange batteries cells without unlock, you can not
(the notebook closed when the battery powerachieve satisfactory results (for example: the
state in 40% or more), the above cases may bebattery can only charge to the state "the last full
caused by batteries capacity declining or batteriescharge capacity", the battery maintenance
cells damage. Of course, there may be due tomanagement information will be displayed the
damage of the protection board, but thischarged number)
possibility is very small.laptop battery cellsWe use professional equipment and related
If you find that above failure happened to yoursoftware to unlock and decrypt the protection
notebook, it is necessary to check your laptopboard. Of course, you must choose the
battery in laptop battery maintenance business.appropriate equipment by battery management
Now, let me introduce the whole process ofchip design.use professional equipment and related
laptop battery cells changing (for examplesoftware to unlock and decrypt the protection
Thinkpad T40 battery) .boardchoose the appropriate equipment by
First, we use professional equipment to detectbattery management chip designrelated software
the cause of the malfunction. There are manyfor unlock and decrypt the protection board
types equipment of Battery Fault Detection, such
as: Texas Instruments products, MAX products,Programmer
Ateml products, and even some personalIf the protection board hardware damaged , we
home-made products. Most we use thewould also use oscilloscope, multimeter and logic
commonly Texas Instruments (Texas) EV2300analyzeroscilloscope, multimeterlogic analyzer
After the deal with the batteries protection board
Use professional equipment and related software, let me introduce the method to choose the right
to detect the cause of the malfunctioncells. We must use sub-meter cabinet and the
internal resistance to check batteries capacity
Battery Fault Detectionresistance, separation voltage, select out all specs
of parameters for comparison with similar groups.
Texas Instruments EV2300
Sub-capacity cabinet
Once detected battery cells faulty , we are
prepare to change the batteries cells forSub-capacity cabinet manage software
notebook battery.
Before the battery cells changing, We would like
to tell you about the structure of the notebookSelect the similar cells to make a battery group
battery.Then we will use the spot-welding and Nickel
sheet to joint the batteries cells
The laptop battery are made up of three parts:together.spot-weldinguse the spot-welding and
batetry shell, battery cells and protection board.nickel films to joint the batteries cells together
In general, notebook battery can be divided into
three parts: the shell, batteries and protectionThe Nickel sheet we use are designed in round
board?cornerround corner and straight angle Nickel sheet
After unlock and decrypt the protection board,
Battery shellconnect the battery cells group. We can assemble
Battery shell. That is notebook battery casing.the shell protection board and cells
There are different three types: type, ultrasonictogether.assemble the shell protection board and
bonding and adhesive bonding type.cells together
During the assemble, you must take high
Batteries cellattention.
Batteries cells group, that is, combination theAfter doing the above steps, the battery cells
batteries cells together in parallel and serieschanging is compeleted. The repaired battery
connection. In accordance with the parallel, inquality is the new battery in most function, so
series of different combinations can be dividedyou must calibrate it first. Generally, you should
into: 2 parallel and 3 serial connection (the mostfully charged in 1o hours then full discharge it 2-3
common), 2 parallel and 4 serial, 2 parallel and 2times.