Laptop Buying Guide

27Feb/090

Mobile Phone Battery Repair Instrument Design and Application(b)

Charge phase of our relationship with the general charger and different frequencies are used by cyclical changes in the pulse signal to the rechargeable batteries. Mainly taking into account the pulse signal can be hp laptop battery  chemicals gradually activated, the battery factory to achieve results. Similarly, when they should not charge more than the termination value of charging voltage, over-charging of the battery may cause permanent damage.

Third, the production process

(A) discharge circuit design

1, the design requirements

① the general desirability of the hp ev087aa, hp ex942aa battery discharge current of 0.2 times the rated capacity.

② must accurately grasp the discharge termination voltage, so as to avoid over discharge the battery and injury.

③ manually conducted on discharge Kai, stop control.

2, the design features of

① battery discharge voltage to the termination should be automatically disconnected loop or automatic discharge into state-of-charge.

② facilitate hp pavilion zt3000, hp 337607-001 discharge monitoring job status.

Following discharge circuit design concept map:

Discharge circuit

Driver circuit may be part of two relays form a self-locking circuit, the discharge end of the disconnect switch automatically transferred to the charging part.

(B) charging circuit design

1, the design of indicators

① adjustable constant-current charge, maximum charge current 500mA.

②Over discharge automatically into a state of constant-current charge.

③ charge to end-of-charge voltage, constant current circuit to stop working, and lock in "Charging The End" state.

2, the design  hp 337607-003, dg103a features of 

① the use of voltage comparators to monitor the battery voltage, to ensure that end-of-charge voltage when the charge current and timely turn-off and lock in "Charging The End" state.

② automatic and manual features Kai, both stop function.

Charging circuit with the pulse signal combining circuit for charging. The 555 timer pulse signal can be used to achieve, with 3 555 to constitute a frequency change in the cycle pulse signal. Circuit diagram in Figure.

Required to connect the entire circuit has a logical relationship which can be used with the door to non-implementation, in the design, we have adopted a 4012 four door 398876-001, pb992a with non-phase input.

27Feb/090

Mobile Phone Battery Repair Instrument Design and Application(a)

1 Introduction hp laptop battery 

Required the development of contemporary society, almost everyone in the use of mobile phone, mobile phone has become an indispensable daily necessities. And people in frequent use, have gradually found that cell phone batteries can not meet our demands, often in use for some time after the emergence of electric charge does not go in, shorter discharge time situation. Just a good rechargeable batteries, no electricity no time, and thus a cell phone hp pp2182l, hp 345027-001 battery repair repair instrument on was born.

Second, the design principle

(1) introduction of mobile phone batteries

Is now generally used mobile phone batteries for lithium-ion battery. Mainly due to lithium-ion hp 342661-001, hp pavilion dv8000 battery are lithium-ion (Li-Ion) and lithium polymer (Li-Pol), battery with light weight, large capacity, small resistance characteristics. But we need to in accordance with the characteristics of its charge, otherwise, its damage and will have a significant number of its rechargeable will greatly discount.

Rechargeable lithium-ion in the process should not have required the attention of charge and over-discharge, it has its own minimum voltage and maximum voltage, the general minimum voltage between 2.2V to 2.3V, the maximum voltage between 4.2V to 4.3V, so we in the design of the circuit when necessary attention to setting discharge termination voltage and hp hstnn-db20, hp 395789-001 charge termination voltage.

(B) design

The design of the circuit is mainly divided into two stages of discharge and recharge. General battery charger is only charging easy, and the repair Miriam many a discharge process.

Discharge phase are first the residual hp 396008-001, hp pavilion dv9000 battery power completely release and discharge voltage reaches its termination value. Discharge phase discharge voltage termination of the value of attention to the settings, if carried out on the battery discharge, the battery will cause great damage.

26Feb/090

Confirmed that the battery be affected(b)


Identification of battery pack


If you have one or more comply with the above list of Toshiba laptop, make sure that has affected the possibility of the battery pack has been installed on your computer. So far the most convenient and most accurate way to verify is to use the Toshiba battery detection utility. Battery Detect utility will be identified has affected the possibility of whether the battery pack is installed in a Toshiba laptop in the Units. Once confirmation has affected the possibility of the battery pack in your computer, please prompt information in accordance with procedures to participate in the new battery pack replacement program initiatives.


Detect battery to use the program only about 200KB, so you can in a very short period of time download finished. Click here to download.


After the download according to the following steps:


1. Ask you to Windows administrator (Administrator) identity sign.


2. Download procedure will be extracted to a TOOL4CHNCS4.zip (for example: My Document) folder.


3. To enter into the folder My Document \ TOOL4CHNCS4, double-click the implementation BatteryCheck4.exe Detect utility.


4. BatteryCheck4.exe implementation in accordance with the screen after the start of the prompts.


If you do not want to download and use the battery-testing procedures, you can also select in accordance with the “battery pack artificial judge Guide” (Click here to download) Introduction to determine the relevance of whether you have the possibility of the affected battery pack, battery pack at the same time the Model and serial number. This manual method requires you to battery pack removed from the computer, and in accordance with “battery pack artificial judge Guide” provided by visual information on the battery pack than the corresponding tag information to carry out. Please note that this method may result in inaccurate results. May, based on visual than on the battery pack that should be replaced, but the results of battery testing procedures that do not have to replace the battery pack. If these two identification methods that differ from the conclusions, the results of testing procedures batteries (not visual comparison of the results) are correct. Detect the use of battery-related procedures are a priority to determine the manner in which we recommend.


If you are required to determine the course of any help, please call the Toshiba computer Hotline :800-820-2048 (fixed) or 116-986-2048,021-52564713 (cell phone), connected after the press “4.” Toshiba computer Hotline working hours are Mon-Sun (8:30-17:30) (statutory holidays).

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