Some people, against the battery of the laptop is the blood of the body, although not very precise, but the resulting battery cell can still see the importance of a laptop.
I bought second hand laptops have been for some time. When I started with the Laptop battery to supply a laptop for membership to 50 minutes before the time less and less, until eventually work more than 10 minutes. Although couples battery laptop second hand is unrealistic, too (as long as several minutes can be used to prevent a power failure may be caused by data loss), generally used as a UPS. But in fact I am always behind his back, often in places where there is no outlet to use it, so always expect the battery will work as long as possible because it can greatly improve the mobility of laptops.
Spent much energy on the market to find, but always the first wife did not find the battery. Relied on their own notebook batteries have a certain understanding, and repair of certain powers of the device, try to repair itself. The next operation, tools required are: multimeter, soldering iron, pliers, razor blades, pliers electrical tape, wire or a small bulb.
Capacity Restoration Act
Remove the IBM ThinkPad R40 battery from the laptop and discovered that the battery box labeled “Ni-Cd”, “9.6 V 2000mA” the words, indicating that the battery is a nickel-cadmium batteries (rechargeable batteries are worst case), rated voltage of 9.6V, 2000mAh capacity. A total of eight batteries metal interfaces, respectively, from left to right mark (the battery with the label side up) – TTI + I +.
Measured with the multimeter found that the battery has two batteries, the leftmost “-” and the right of the second “+” is a group, the second left “-” and the far right of the “+” is a group. Detection of two batteries are really for no-load voltage of 9.8V, and when the battery is low voltage alarm, after the mobile starts (and one might expect that there should not be too many ‘ electricity)! Concludes: the laptop to start with low voltage alarm goes off automatically after a while, but when the battery is not fully satisfied, it is a certain degree of residual power, while nickel batteries cadmium have memory effect and do not take full charge over time will reduce Dell GD761 battery capacity.
Then sent for two son of heating (which can also change a light bulb or power resistor) connected to each positive battery cell and negative ends (the discharge current can be controlled to 200mA ~ 500mA between the specific capacity the battery must be considered, while all – usually 0.2C ~ 0.5C is the battery nominal capacity of 0.2 to 0.5 magnification of the discharge current), to release the battery power of finished products base and then it stalls multimeter electrical current to 10A and finally exhausted the battery back in the laptop for a normal load. After such repeated four times and found that the hp PB995A battery was able to work more than 40 minutes from time, primarily to meet the requirements of use.
If your laptop battery is a similar situation, according to the above method a try, there may be unexpected pick up! In addition, if your laptop uses a lithium battery, the discharge of the battery cell in a note to be sure to jump the battery box of the circuit, because the only way to achieve good results.
Cell replacement laptop battery
With the method of recovery capabilities can be used to extend the sony VGP-BPS2A battery for some time to solve the problem, in addition to replacing the entire stack outside the (laptop batteries second hand is very difficult to find same model) can also change the core of the battery. But it also requires a better understanding of the knowledge of the battery, which powers the operation stronger. What follows is still my laptop batteries, for example (models of laptop is Fujitsu’s FMV-575NU / Y), introduced the replacement battery cell.
Although laptop batteries at the same time, there are two sets of batteries to power the machine, but with the test film multimeter Store Laptop batteries touching the spring, found the battery marked “+” or “-” the metal two springs in contact touch pads are interdependent, which means that the battery is actually two machines in parallel to food.
Battery with a blade along the slits on the sides of the battery carefully cut and found the battery box, a total of 16 monomers, which can be translated outside of a cell voltage and capacity, respectively: 1, 2 V, 1000mA. Although its shape and size and the general on the 5th, as the nickel cadmium batteries, but with the toshiba PA3465U-1BRS battery capacity on the market can not find. Finally, a store second-hand computer to find a Fujitsu FMV-575NS / batteries for laptops L, the label can be seen from the shell of the battery is Li-ion battery (Li-ion), tension 10.8V, capacity is 2400mA. And the battery on my laptop while Fujitsu, but the voltage, capacity and batteries are some differences in their nature, can replace the heart was not in the end, but still spent 180 yuan bought.
Home to the lithium battery open, rounding the circuit inside, remove the battery 6 monomer, a single cell parameters are: 3.6V, 1200 mA), according to the original arrangement of the circuit to the battery 22 in parallel and then series, using duct tape for six cells connected in a series of warehouses and under the battery of the laptop. Some laptop batteries in both positions with the “+” connected to a spring to choose the film touches arbitrary use with the battery cable connected to the positive terminal, so choose one with the “-” connected to the touch compressed spring and the battery connected to the anode. Finally, we need the original laptop batteries due to both labeled “T” word for the metal interface of an electronic component (this component is estimated laptop in the identification circuit of the battery to detect whether battery connected to the notebook) were removed, the welding position corresponding to the touch laptop spring on chip (if not this component, use the apple iBook G4 14 inch battery to the laptop power supply, the Power On Self Test appears after a while, the machine automatically shut off phenomenon). Of course, these operations must be conducted in the shutdown state.
As for the use of force after the reform, we should say is rather satisfactory: I just bought a laptop battery works more than 50 minutes, and disposal after use change of such methods, we found that the batteries of laptop computers can escape through the 2 hours continuous operation experimental 40 minutes, I was very surprised. Although this example is in my laptop Fujitsu’s experience from the successful experience of the current situation, but we can understand by analogy. It should be noted that the restructuring should take into account several key factors are: Battery voltage, nominal capacity and volume. A little different voltage and rated capacity, not a big problem, but if the TravelMate 290 battery after the reform are too large will not fit into the warehouse of the original battery, no matter how long laptop battery are not really meaningful (and you still can not laptop batteries outside, pulling a long wire with Jigen bar – if so, the portability of laptops is significantly reduced in!)
Ultimately remains to remind you that this method has great risks, for reference, there is no certainty do not apply. Otherwise, in the process of restructuring and unexpectedly, and my education “Chinese computer” are not responsible.
Editor’s Note: This article is mentioned in several respects, indeed, applied to a number of occasions, such as maintenance of mobile phone battery. In addition, the movements of exchange battery, as this author can buy the same second-brand laptop battery hand and get used the example of lithium batteries can be described as lucky. Lithium batteries performance is good, but can not make this event, readers can use in practice, instead of nickel-hydride batteries in metal. Currently, there are many sales in the electronics market nickel-hydride batteries, metal, we can buy as needed. Add that use nickel-hydride batteries in metal have several advantages: first, cheap, easy to access; Secondly, the nickel-metal hydride batteries are not “smart” lithium have not need more of the auxiliary circuit and turn it more convenient Completed batteries for laptop computer use in place a more secure world: the three, only the voltage nickel-metal hydride batteries to 1.2V, 3.6 cons V Li-Ion batteries need to be more easily combined into a voltage. Of course, gaps nickel-hydride batteries in metal are also very obvious, the weight of the component, a relatively low capacity of Dell U4873 battery the main problem.
