Today, the Internet saw an article! On the original IBM laptop battery Laptop Battery and domestic differences in contrast, feel very good! Dismantling process is quite detailed! The following is the original author of the summary of this experiment: deep thought, and nature needs to replace laptop batteries friends need attention:
"Compatible with the battery and do not legendary so bad, and even give people a lot of surprises, either shell or a control circuit is not lost on the original battery, and even batteries is also a slightly better than the original (hopefully not all of IBM have B-type batteries). and from the price comparison, an original IBM 9-cell battery customer service offer is 1,600 yuan, GodMobi of the piece only to be 400 yuan, the same one-year warranty is the replacement in March. cost-effective than the original much higher. "
The following is the original author: belongs to original author!
Under normal circumstances, laptop battery IBM 92P1089 Battery charge-discharge properties of 300 times it will be significantly decreased, but many people prefer to buy expensive original Service Center, an electronics market for batteries or batteries nor dares to buy is compatible with the battery.
I have friends around is the case, asked him why, answer is: fear of trouble. Laptops are not cheap, in the original customer to buy the rest assured, even for cores, but also be able to see him standing on the side of operation, and will not a change in the "black batteries; but to buy third-party production of batteries, can not turn to see what is batteries, really do not worry ... ...
This is a very typical answer, if low-quality batteries hurt because they have bought from his beloved books even give rise to security incidents is indeed a depressing question. IBM will be completely disassembled that this is an original battery and one domestic brand GodMobi batteries, with facts to speak, to see if production is now compatible with third-party IBM 92P1101 Battery vendors like how the battery in the end. At the same time, we will also interspersed in the text tell us about the basic knowledge of cells and circuits specifically dedicated to love it-yourself DIY classmates.
About to be dismembered two batteries, IBM and GodMobi original 6-pin compatible with 9-cell battery.
Prior preparation, two batteries, wallpaper knife 2, the word screwdriver 1, pry pieces 1.
All ready, now hands-on demolition!
Will be the first to be mutilated original IBM battery, to emphasize that this dismantling of destructive testing, do not imitate.
Battery Neice is the place where the largest gaps, and there is no alignment, and we began to disassemble it from here.
Here with the wallpaper knife in gently tilt the can, careful not to draw too IBM 08K8192 Battery deeply, so as not to hurt the batteries.
In Neice loose with the word screwdriver forced open after the lateral border.
From here, pry out the battery case with great difficulty to open.
Cover is now lifted the state, we can see that this piece of the battery 6 batteries and control circuitry arranged look. In accordance with the battery medium classification, they belong to lithium-ion battery. With a light weight, large capacity, no memory effect and so on.
Because the lithium-ion battery is almost no "memory effect" and does not contain toxic substances, etc., and now most of the many digital devices are used lithium-ion batteries for power supply, its price is relatively moderate, the energy density is high, its capacity is with the weight of the nickel-metal hydride batteries 1.5-2 times, but also has very low self-discharge rate.
The battery is also a piece of the more common structure: laptop battery box looks a thing, in fact, which is several "power core" formed by series-parallel, in general, have IBM 08K8193 Battery adopted laptop battery 18650 or 17670 batteries , mainly because the two larger capacity batteries, are smaller and are likely to cause the battery needed shape. We are now apart of the IBM battery is 18650, of which 18 representatives of diameter of 18mm, 65 on behalf of a high degree of 65mm, Sanyo products.
Here a small inconspicuous piece of circuit board in the entire laptop power supply system used to do play a vital. Because the lithium-ion batteries are basically 3.6V or so, two batteries in series to double voltage; parallel voltage unchanged, but the capacity has changed twice. For example IBM T series, capacity 4400mAh, voltage is 10.8V, the two values is the string from the six batteries and a combination.
Laptop battery charging are generally the first constant current, after constant pressure, internal with charging protection and full of light after changing tips, this is the charger and battery control circuit in the work of (different brands mechanism different).
For example a nominal 10V, less than begin to charge IBM 08K8195 Battery after full charge will no longer reach 10V; analogy up, this process is like a person to eat, eat after the stomach and nerves of the brain will be fed back to signal to stop eating, but if the measured are not allowed, there is no feeling of saturation would have been eating, with predictable results ... ...
Control circuitry on the main parts of a master chip, IBM's piece of the circuit structure in which we do not know, but look at solder joint appearance is very neat, original quality is not bad.
The circuit board with colorful strokes of the four color-coded, it should be electric core cable lines in the circuit board order.
The following is the batteries of the "joints", IBM in this solder joint is quite a neat, well-deserved maker's workmanship.
If you go to e-marketplace for their own batteries for batteries (that is, the original battery pack to replace the batteries out other batteries) batteries in general in addition to paying the money we have to pay 10 yuan for each solder joint around. Do not think for batteries, such as a change to your Walkman batteries that simple. In fact, changing batteries, battery manufacturers are strictly prohibited acts, because it has a very high risk. Changing batteries when the battery itself, with a voltage soldering iron or other tool to easily generate electrostatic discharge lead to short-circuit, causing fire IBM 08K8214 Battery explosion. On the other hand, due to charging protection circuit has been written into the original batteries information (capacity, discharge curve, etc.), changing batteries is likely to result in failure protection circuit, which can not be charged, or even lead to overcharging explosion. So, for batteries is dangerous, and there is a risk, it must pay attention!
In these erythroderma 18650 battery, we can only see some vague type of information.
It turns out that batteries How many pieces of information is not written on the skin, but rather printed on the batteries on the metal chamber, cut open the skin to see.
Sorry about that, although the Sanyo is the batteries inside is a better brand, but the piece of IBM original equipment batteries, only used Class B batteries.
Author that they have a licensed IBM T42, along with Taiwan and Japan brought back a Fujitsu laptop, almost the same time purchase, frequency of use is also similar, but a year later, IBM is very severe decline in battery performance, while Fujitsu, the battery performance and newly purchased When compared with almost unchanged.
Class B batteries, it is probably the answer to this IBM 92P1060 Battery situation, perhaps that "the best is only available for domestic use" rumor is true.
Well, IBM battery internal structure that we have seen very clearly in the following we begin dismantling GodMobi compatible battery.
Demolition, have to tear up the battery and so on around the bar.
Surprisingly, this bar battery GodMobi anti-tearing and it seems that the level of domestic manufacturers are also good to download oh.
From here, with the wallpaper knife forced open a gap, then use pry tablets (phone card is also OK) card here.
Go to the other side, or use the edge of the word screwdriver forced open.
Because it is 9-pin, so we can see here GodMobi battery than the above split off a row of IBM battery more batteries, similar to other structures.
Because the lithium-ion batteries have a certain charge voltage limit, the general 3.6v rechargeable battery should not exceed 4.2v, otherwise an explosion may be overheating. No matter what kind of notebook batteries by batteries + charging protection circuit, the charging protection circuit is again the control chip to prevent over-charging the battery IBM FRU 08K8193 Battery overheating and to prevent overheating protector formed. This is even GodMobi battery is no exception.
From the exterior, it and IBM's circuit structure is similar to formation of solder joints equally belong to welding machines.
Another piece of circuit board role: monitoring charging voltage, in approaching the threshold when to stop discharging, batteries have discharge limits, the general 3.6v battery can not discharge more than 2.75v, which would otherwise cause the battery failure, which is what we often say "over-discharge."
Let's look at GodMobi solder joints on batteries, it is certainly not original IBM battery so smooth, but also quite good, at least for batteries than the stronger hand joints too much.
By the way, change batteries while saving money, but the hidden danger IBM ThinkPad R51 Battery is not small. Such as charging protection circuit may be memories forward to your battery is full charge, even with no electricity for the new batteries, the circuit does not allow re-charging, and many of the core after changing the battery does not charge for that reason.
In addition, changing batteries, carefully check the batteries prior to the model, capacity, brand, sometimes different brands of batteries into the charging circuit, the circuit will automatically lock (Japan developed technology), resulting in failure for the core. Mo face a significant loss to gain petty advantages.
GodMobi on batteries is Samsung's 18650, purple, marked ICR18650-26, in front of a model, followed by 26, said single-capacity 2600mAh, can be regarded as one of Samsung's the best batteries.
On-line, can easily be found on the batteries to the information;
Name: Samsung Li-ion rechargeable battery
Model: SAMSUNG ICR18650-26
Nominal Capacity: 2600mAh
Nominal Voltage: 3.7V
Diameter: 18.25mm
Height: 65.00mm
Weight: 50g
Density: 520Wh / I, 199Wh/kg
Charging method: constant current constant voltage (4.2V)
Maximum charge current: 1CmA (2400mA)
Maximum discharge current: 2CmA (4800mA)
Discharge Temperature: -20 ° C ~ +60 ° C
Charging time: 3hrs (Standard) or 2.5hrs (Rapid)
Resistance of less than 65 milli-Europe
It should be said, though South Korea's production of batteries is not great influence on Japanese products, Samsung, Sanyo IBM ThinkPad R50 Battery is not as well known, but the comparison, at least Samsung's top batteries type B compared with Sanyo batteries to be much better.
Finally, compare the two battery shell.
From the side view, both are 1.2 mm thick shell around the memory is accompanied by a small amount of adhesive so that the fixed batteries, plastic parts from the materials to hand are feeling similar.
After describing the main parts, this is temporarily dismantling trials come to an end.
Open the point of view, is compatible with the battery is not legendary so bad, and even give people a lot of surprises, either shell or a control circuit is not lost on the original battery, and even batteries is also a slightly better than the original (hope not IBM is using all of the Class B batteries). And from the price comparison, an original IBM 9-cell battery customer service offer is 1,600 yuan, GodMobi of the piece only to be 400 yuan, the same one-year warranty is the replacement in March. Much higher than the original price.
Therefore, unless you have a strong plot and the original IBM IBM ThinkPad T43 Battery pockets enough, otherwise it is recommended to buy compatible batteries, sufficient for most everyday use. As for batteries, this paper has said its drawbacks, the love of their own choice
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