Battery choices and safeguard skills
The following options to choose batteries skills are for reference only :
Formal production factories of the cell parameters clearly marked;
Purchase batteries, the best choice of nickel-hydrogen batteries or lithium-ion batteries;
Hang batteries general use PC or PVC casing material, very strong, not easily damaged, the general means to break the cell.
Neat appearance, no superfluous burr, the external surface of a certain roughness and feel comfortable.
Batteries into the battery shafts should move around, and close integration with whole sets, and attention to the nominal voltage battery voltage to be compatible with your notebook.
To ensure that the purchase of the cell, provides good performance discharged.
Normally the thin cell, smaller capacity, the thick cell, the greater will be the capacity.
Batteries and interface options to dealers in detail about some of the batteries and interface characteristics.
If you want to extend the useful life of a cell, we must also carry out proper maintenance and preservation of cells, the following is the maintenance and preservation of Extra attention :
In order to avoid battery temperature above 60 degrees or below -20 degrees to the working environment, or the use of time and life will be shortened. Battery charging basic methods for cell characteristics vary, according to the manufacturers specifications to the methods of charging instructions.
If prolonged cell wall will be the best machine, not switch on the machine because of the gradual depletion of cell energy will be.
As a non-charging battery lithium batteries in general, such as forcibly charging will cause explosions.
Do not be mobile phone batteries together with some metal products, metal objects to prevent these contacts battery polarity, short circuit caused by the phenomenon.
If the non-use of temporary mobile phone batteries, which can be temporarily released part of electricity, but further preservation.
The lithium-ion battery itself extremely active chemical weapons, sharp response, and therefore we should not arbitrarily its demolition. If the rain, intermediary, available dry cloth away, or in the ventilation Department to dry or use hot air dryers around 40 degrees.
2007年5月27日星期日
2007年5月22日星期二
How to notebook computer battery charging?
There is also a need to have a good conductive nature, reduced battery internal inertia.
Although lithium-ion batteries are nickel-cadmium batteries little memory effect, the theory is the crystallization of memory effects in almost lithium batteries will not have such a response. However, lithium-ion rechargeable batteries in several capacity will decline after release, the reasons are complex and varied. Mainly negative electrode material itself is changing, from the molecular level, is the negative electrode of a lithium-ion accommodate structure will be gradually 18th hole, plug; From the perspective of the chemical is being cathode materials reactive passivation, a deputy response generated stable other compounds. Physics, material will gradually falling off as a positive situation, in short, can ultimately reduce battery provides free discharged in the course of the lithium-ion mobile number.
An overcharge and excessive discharge will be lithium-ion batteries are cathode caused permanent damage, from the molecular level, can intuitive understanding will lead to excessive discharge of carbon cathode excessive release lithium ion and make their films at the structural breakdown, excessive charging will be too much lithium ion hard into the structure where the carbon cathode, and lithium ion no longer makes some release. This is why normally equipped with lithium-ion battery provides discharge control circuit causes.
Unsuitable temperature will trigger internal lithium ion battery other chemical reactions generated We do not want to see the compounds, so in many lithium ion batteries are negative electrode temperature divide between a protective or electrolyte additives. In some cases the cells warming, composite membrane electrolyte membrane Kong closed or degenerative, batteries internal inertia increased until open circuit, the battery no longer warming, ensuring battery charging temperature normal.
And lithium-ion rechargeable battery or can upgrade the actual capacity? Experts clearly told me that this is meaningless. They even said that the so-called three-person before use on the "back" in their knowledge of the two Dr., also can not imagine what it necessary. But why many people leave after dark place in Battery Information marker capacity will change? Will be mentioned later.
IBM notebook computer with a lithium-ion battery charging control chips and management chips. These chips are a series of register management, a capacity, temperature, ID, the charging state, the number of discharge values. In the use of these values will gradually change. I personally think thatcom IBM notebook puters in use on the "whole person should use a month later on a" practice is the main role should be to amend the register of improper value, making battery charge control and the actual nominal battery capacity coincide.
Charging the battery charging control chip main control process. ThinkPad lithium-ion batteries charging process is divided into two stages, Hengliu provides fast stage (a yellow battery light) and Hengya current decline phase (a battery light green lights. Hengliu Express provides stage battery voltage batteries gradually rise to the standard voltage, and then in the control chips into Hengya stage, voltage not been made to ensure that no longer rise, with the current battery consumption to rise gradually weakened 0, and the final completion of charging.
Statistics chip sales through the records discharge curve (voltage, current and time) can be calculated sample cell capacity, and that is what we read in the Battery Information Lane Estate. Values. And lithium ion batteries used in numerous after discharge curve will be changed, if the chip had not had the opportunity to once again read out a complete discharge curve, the calculated amount is inaccurate. So we need to take a deep cover calibration cell chip.
Finally, I think the maintenance of the batteries :
1. Not deliberately guarantee every person to have the power to take End;
2. Time to do a deep-protection circuit provides controlled release of power to amend batteries statistics, but it will not enhance the actual capacity of your batteries.
3. Long-term idle batteries to be placed on the shady places to weaken its own internal passivation reaction speed.
4. Protection circuits are also unable to control cell self discharge, the batteries do not have long-term, should be made into a certain amount of storage in order to prevent the batteries from over-discharge led to the discharge of excessive damage.
In fact, not too many have to take into account the use of batteries attention, in other words taking into account also is not much use. How many times a cell can use, perhaps more differences from the manufacture of individual differences cell itself, rather than using methods. Choice of a good reputation in the notebook computer brands, the use of long-life batteries is the one of the guarantees.
Although lithium-ion batteries are nickel-cadmium batteries little memory effect, the theory is the crystallization of memory effects in almost lithium batteries will not have such a response. However, lithium-ion rechargeable batteries in several capacity will decline after release, the reasons are complex and varied. Mainly negative electrode material itself is changing, from the molecular level, is the negative electrode of a lithium-ion accommodate structure will be gradually 18th hole, plug; From the perspective of the chemical is being cathode materials reactive passivation, a deputy response generated stable other compounds. Physics, material will gradually falling off as a positive situation, in short, can ultimately reduce battery provides free discharged in the course of the lithium-ion mobile number.
An overcharge and excessive discharge will be lithium-ion batteries are cathode caused permanent damage, from the molecular level, can intuitive understanding will lead to excessive discharge of carbon cathode excessive release lithium ion and make their films at the structural breakdown, excessive charging will be too much lithium ion hard into the structure where the carbon cathode, and lithium ion no longer makes some release. This is why normally equipped with lithium-ion battery provides discharge control circuit causes.
Unsuitable temperature will trigger internal lithium ion battery other chemical reactions generated We do not want to see the compounds, so in many lithium ion batteries are negative electrode temperature divide between a protective or electrolyte additives. In some cases the cells warming, composite membrane electrolyte membrane Kong closed or degenerative, batteries internal inertia increased until open circuit, the battery no longer warming, ensuring battery charging temperature normal.
And lithium-ion rechargeable battery or can upgrade the actual capacity? Experts clearly told me that this is meaningless. They even said that the so-called three-person before use on the "back" in their knowledge of the two Dr., also can not imagine what it necessary. But why many people leave after dark place in Battery Information marker capacity will change? Will be mentioned later.
IBM notebook computer with a lithium-ion battery charging control chips and management chips. These chips are a series of register management, a capacity, temperature, ID, the charging state, the number of discharge values. In the use of these values will gradually change. I personally think thatcom IBM notebook puters in use on the "whole person should use a month later on a" practice is the main role should be to amend the register of improper value, making battery charge control and the actual nominal battery capacity coincide.
Charging the battery charging control chip main control process. ThinkPad lithium-ion batteries charging process is divided into two stages, Hengliu provides fast stage (a yellow battery light) and Hengya current decline phase (a battery light green lights. Hengliu Express provides stage battery voltage batteries gradually rise to the standard voltage, and then in the control chips into Hengya stage, voltage not been made to ensure that no longer rise, with the current battery consumption to rise gradually weakened 0, and the final completion of charging.
Statistics chip sales through the records discharge curve (voltage, current and time) can be calculated sample cell capacity, and that is what we read in the Battery Information Lane Estate. Values. And lithium ion batteries used in numerous after discharge curve will be changed, if the chip had not had the opportunity to once again read out a complete discharge curve, the calculated amount is inaccurate. So we need to take a deep cover calibration cell chip.
Finally, I think the maintenance of the batteries :
1. Not deliberately guarantee every person to have the power to take End;
2. Time to do a deep-protection circuit provides controlled release of power to amend batteries statistics, but it will not enhance the actual capacity of your batteries.
3. Long-term idle batteries to be placed on the shady places to weaken its own internal passivation reaction speed.
4. Protection circuits are also unable to control cell self discharge, the batteries do not have long-term, should be made into a certain amount of storage in order to prevent the batteries from over-discharge led to the discharge of excessive damage.
In fact, not too many have to take into account the use of batteries attention, in other words taking into account also is not much use. How many times a cell can use, perhaps more differences from the manufacture of individual differences cell itself, rather than using methods. Choice of a good reputation in the notebook computer brands, the use of long-life batteries is the one of the guarantees.
Notebook computer battery selection reference!
Notebook computer battery life-like no more than three to four years, it is perhaps the most likely users of the replacement things. Two years after the use of notebook computers will be found in an increasingly fast battery consumption. Possible, the old batteries can be replaced by new cells to ensure the stability of the computer.
When in need of replacement notebook computer batteries, preferably with a selection of models to replace batteries. But if the old computer is used nickel-hydrogen batteries, battery power supply for much longer, of course, can be designated as computer users manual or manufacturers recommended models use lithium batteries. Although nickel-hydrogen batteries are inexpensive, but the existence of memory effect, but in the same capacity under weight than lithium batteries, and large lithium batteries have no memory effect, lightweight, long time, such as electricity merits notebook computer battery has become the standard configuration. This notebook computer manufacturers use lithium batteries because of the different time in power there a certain gap between friends should be noted in the purchase process, the distinction between different brands in the cell, a comparison between the best of several brands.
In addition to the performance indicators battery manufacturers stated supply time, we also need to pay attention to their capacity. Battery capacity is usually AH (ampere-hour, ampere hours), with the most current notebook computers around 4000AH, but ordinary cell can be sustained two hours. In addition to the time of the battery power of computers with heat release sexual energy and other factors, screen size (the greater the consumption), screen brightness, and the implementation of the work have an impact on the supply time.
Now notebook batteries in 1000 at ocean bottom, about the price of the overall notebook 10%- about certain Chaobao aircraft even higher. And battery warranty period, the Bulgarian three months, six months of insurance, but also the longest one; The batteries warranty time is extremely short because notebook batteries consumables, charging frequency is constant, with a small one. Moreover, notebook batteries and other hardware are different, there is no room for repairs can only be broken. For such products lengthy warranty (proven), the invisible, the burden on manufacturers increased, the purchase notebook, some asked about the warranty time and battery conditions. Also in the purchase of second-hand notebook computer time also try not to forget its aircraft batteries to ongoing work within the length of time. Normally used in 1912 after the notebook computers in sufficient electricity, nickel-hydrogen batteries can support some computer work one hour or so, lithium ion batteries can support nearly three hours, but compared to the new cell, which is very low demand, can not achieve this target on the description of spent batteries from a corner.
When in need of replacement notebook computer batteries, preferably with a selection of models to replace batteries. But if the old computer is used nickel-hydrogen batteries, battery power supply for much longer, of course, can be designated as computer users manual or manufacturers recommended models use lithium batteries. Although nickel-hydrogen batteries are inexpensive, but the existence of memory effect, but in the same capacity under weight than lithium batteries, and large lithium batteries have no memory effect, lightweight, long time, such as electricity merits notebook computer battery has become the standard configuration. This notebook computer manufacturers use lithium batteries because of the different time in power there a certain gap between friends should be noted in the purchase process, the distinction between different brands in the cell, a comparison between the best of several brands.
In addition to the performance indicators battery manufacturers stated supply time, we also need to pay attention to their capacity. Battery capacity is usually AH (ampere-hour, ampere hours), with the most current notebook computers around 4000AH, but ordinary cell can be sustained two hours. In addition to the time of the battery power of computers with heat release sexual energy and other factors, screen size (the greater the consumption), screen brightness, and the implementation of the work have an impact on the supply time.
Now notebook batteries in 1000 at ocean bottom, about the price of the overall notebook 10%- about certain Chaobao aircraft even higher. And battery warranty period, the Bulgarian three months, six months of insurance, but also the longest one; The batteries warranty time is extremely short because notebook batteries consumables, charging frequency is constant, with a small one. Moreover, notebook batteries and other hardware are different, there is no room for repairs can only be broken. For such products lengthy warranty (proven), the invisible, the burden on manufacturers increased, the purchase notebook, some asked about the warranty time and battery conditions. Also in the purchase of second-hand notebook computer time also try not to forget its aircraft batteries to ongoing work within the length of time. Normally used in 1912 after the notebook computers in sufficient electricity, nickel-hydrogen batteries can support some computer work one hour or so, lithium ion batteries can support nearly three hours, but compared to the new cell, which is very low demand, can not achieve this target on the description of spent batteries from a corner.
2007年5月21日星期一
The review of Dell laptop batteries (High Recommend)
"Dell Computer Corporation" is one of the leaders in the world on the production of computers and accessories. Dell™ confidently associates with the company making reliable and attractive technics and accessories to it under the moderate price.We shall show you the laptop batteries of this manufacturer. All these batteries are Lithium-Ion ones. Lithium-Ion batteries serve longer than other batteries. They do not require often replacement. There is no battery memory effect with these Lithium-Ion batteries — you can charge the battery whenever you like without fear of reducing its charge capacity. In addition, you do not need to drain the battery completely before recharging it.If you travel a lot and spend time in airports,on business trips or vacations where finding an outlet for your laptop can be difficult, these are the extremely useful accessories.Try a New Brand Dell 312-0384 Laptop Battery.We give you a good discount: $149.00 $119.00. It is compatible with Latitude D620. Its great capacity 85 Whr lets you work without any breaks. It offers long reliable performance.You may be on your holiday or on business trip, you can’t worry that the power of this battery runs out. Try it and enjoy the work of your notebook. You can buy it here:
312-0384 Battery Dell for Latitude D620.The next one is a Replacement Lit-Ion Battery for Dell Laptops.The discount is great: $169.70 $120.00. The battery is compatible with Dell Inspiron 9100 and Dell Inspiron XPS. Its capacity is 6450mAh and the battery provides very safe charging and discharging.Buy it here:
Dell Battery for Inspiron 9100 / XPS.If you have Inspiron 2100,2000 or Latitude LS, L400, the Rechargeable Lit-Ion Battery for Dell type 2834T is what you need.With its good capacity 3600mAhit seems pretty good value for money: $109.00 $89.00.Try it here:
Li-Ion Battery for Dell Inspiron 2000/2200.It is perfect for those trips when you really don't know how long you will be gone and need that extra time on or off line to do your work and get it done.The next one is compatible with the same models of notebooks. It provides 3600mAh capacity, the time saved with it is worth the cost: $109.00 $89.00. You can buy it:
Dell Battery 3600mAhand take your notebook with you and not worry about the battery giving out before you return it to the charging place.We can offer you a New GENERIC Laptop Battery only for $89.00 $69.00. This laptop battery is compatible with a great number of laptop models such as Dell Latitude C500, C510, C540, C600, C610, C640, C800, C810, C840, CP, CPi, CpiR, CPt, CPx and Inspiron 2500, 3700, 3800, 4000, 4100, 4150, 6000, 8000, 8100, 8200 and Precision M50, M40. It features a 66 Wh capacity.It is good for professionals and busy students. Buy it here:
Generic 66 Whr Li-Ion Battery.The next is a New Dell Original Laptop Battery which costs no more than $139.00 $85.00. With capacity 80 Wh it gives you a full-day life on laptop. It is compatible with Dell Latitude D800, Inspiron 8500, Inspiron 8600 and Precision M60. It offers uninterrupted reliable performance. Buy it an make sure yourself: DELL 8N544 Li-Ion Battery .A New Dell Original Laptop Battery costs only $139.00 $85.00. It is compatible with Dell Latitude D800, Inspiron 8500, Inspiron 8600 and Precision M60. With capacity 80 Wh this battery offers long life and permanently reliable performance you need to get the most out of your notebook. Buy it here:
DELL 01X284 Li-Ion Batteryand you won’t be disappointed with it.A New Dell Original Laptop Battery is worth of its cost: $139.00 $97.00. It is unquestionably one of the best in the market of laptop batteries. It is compatible with Dell Latitude D800, Inspiron 8500, Inspiron 8600 and Precision M60. With capacity 80Wh it offers reliable power for dependable performance. Learn more about it and buy it here:
DELL W2391 Li-Ion Battery.We also offer a New Dell Original Laptop Battery only for $139.00 $85.00. It is compatible with Dell Latitude D800, Inspiron 8500, Inspiron 8600 and Precision M60. It features 80 Wh capacity which let you feel confident when you are on move. These are the details, learn more and buy it:
DELL 312-0195 Li-Ion Battery for Inspiron 8500/8600.And the last one is a New Dell Original Laptop Battery which costs only $139.00 $85.00.It matches with Dell Latitude D800, Inspiron 8500, Inspiron 8600 and Precision M60. And with 80 Wh capacity it helps you power up your laptop for business trips and holidays.Buy it here:
DELL Y0956 Li-Ion Battery.And in conclusion let’s give you some useful pieces of advice:• Do not keep your laptop hooked up by power outlet, it will weaken the battery.• Take out the battery safely after it has charged fully.• How much you use your laptop will affect the battery life. Don’t use the laptop to do music, homework, etc., all at the same time as it's heavy enough for the laptop battery.• Keep your laptop brightness as low as you can when you use the battery. The regular output of the novelties of the Dell™ company provides all segments of the consumer market. All our batteries have been tested and validated on Dell™ systems to ensure they will work with your laptops.Please,make sure to check the availability of new laptop batteries in our internet shop as we offer the newest and best models. You will power up your notebooks with Dell laptop batteries and it will let you make progress in you work.
312-0384 Battery Dell for Latitude D620.The next one is a Replacement Lit-Ion Battery for Dell Laptops.The discount is great: $169.70 $120.00. The battery is compatible with Dell Inspiron 9100 and Dell Inspiron XPS. Its capacity is 6450mAh and the battery provides very safe charging and discharging.Buy it here:
Dell Battery for Inspiron 9100 / XPS.If you have Inspiron 2100,2000 or Latitude LS, L400, the Rechargeable Lit-Ion Battery for Dell type 2834T is what you need.With its good capacity 3600mAhit seems pretty good value for money: $109.00 $89.00.Try it here:
Li-Ion Battery for Dell Inspiron 2000/2200.It is perfect for those trips when you really don't know how long you will be gone and need that extra time on or off line to do your work and get it done.The next one is compatible with the same models of notebooks. It provides 3600mAh capacity, the time saved with it is worth the cost: $109.00 $89.00. You can buy it:
Dell Battery 3600mAhand take your notebook with you and not worry about the battery giving out before you return it to the charging place.We can offer you a New GENERIC Laptop Battery only for $89.00 $69.00. This laptop battery is compatible with a great number of laptop models such as Dell Latitude C500, C510, C540, C600, C610, C640, C800, C810, C840, CP, CPi, CpiR, CPt, CPx and Inspiron 2500, 3700, 3800, 4000, 4100, 4150, 6000, 8000, 8100, 8200 and Precision M50, M40. It features a 66 Wh capacity.It is good for professionals and busy students. Buy it here:
Generic 66 Whr Li-Ion Battery.The next is a New Dell Original Laptop Battery which costs no more than $139.00 $85.00. With capacity 80 Wh it gives you a full-day life on laptop. It is compatible with Dell Latitude D800, Inspiron 8500, Inspiron 8600 and Precision M60. It offers uninterrupted reliable performance. Buy it an make sure yourself: DELL 8N544 Li-Ion Battery .A New Dell Original Laptop Battery costs only $139.00 $85.00. It is compatible with Dell Latitude D800, Inspiron 8500, Inspiron 8600 and Precision M60. With capacity 80 Wh this battery offers long life and permanently reliable performance you need to get the most out of your notebook. Buy it here:
DELL 01X284 Li-Ion Batteryand you won’t be disappointed with it.A New Dell Original Laptop Battery is worth of its cost: $139.00 $97.00. It is unquestionably one of the best in the market of laptop batteries. It is compatible with Dell Latitude D800, Inspiron 8500, Inspiron 8600 and Precision M60. With capacity 80Wh it offers reliable power for dependable performance. Learn more about it and buy it here:
DELL W2391 Li-Ion Battery.We also offer a New Dell Original Laptop Battery only for $139.00 $85.00. It is compatible with Dell Latitude D800, Inspiron 8500, Inspiron 8600 and Precision M60. It features 80 Wh capacity which let you feel confident when you are on move. These are the details, learn more and buy it:
DELL 312-0195 Li-Ion Battery for Inspiron 8500/8600.And the last one is a New Dell Original Laptop Battery which costs only $139.00 $85.00.It matches with Dell Latitude D800, Inspiron 8500, Inspiron 8600 and Precision M60. And with 80 Wh capacity it helps you power up your laptop for business trips and holidays.Buy it here:
DELL Y0956 Li-Ion Battery.And in conclusion let’s give you some useful pieces of advice:• Do not keep your laptop hooked up by power outlet, it will weaken the battery.• Take out the battery safely after it has charged fully.• How much you use your laptop will affect the battery life. Don’t use the laptop to do music, homework, etc., all at the same time as it's heavy enough for the laptop battery.• Keep your laptop brightness as low as you can when you use the battery. The regular output of the novelties of the Dell™ company provides all segments of the consumer market. All our batteries have been tested and validated on Dell™ systems to ensure they will work with your laptops.Please,make sure to check the availability of new laptop batteries in our internet shop as we offer the newest and best models. You will power up your notebooks with Dell laptop batteries and it will let you make progress in you work.
How long will my battery lasts between charges?
This is the most famous client's question, and is the hardest one to answer. Exactly this answer depends on the laptop model that you have. Some laptops can run for 5 hours or more off of their battery, others may last less than 2 hours before they need to recharge the battery. Remember that the size of the screen (particularly if set at the brigh test setting), hard drives,DVDRW/CDRW Drives,CDRW/DVD Drives, and wireless network, the power of your processor (PIII, P4, etc), your hard drive, and many other things such as the programs you are running (DVD, CD-Burning, Word Processing) Gadgets like laptops use two types of batteries, nickel-cadmium or nickel metal hydride batteries and lithium batteries( Li-Ion, Li-Poly). The nickel batteries are the older version of batteries and are not as famous today after lithium batteries came into the market. It is a known fact that the lithium batteries hold charge better than the nickel batteries, therefore if you are going to buy a new gadget it is better that you choose the one with lithium battery so that it will hold charge better and for a longer duration of time.Batteries charge depends on their capacity to hold power. Generally laptop battery will hold charge for four to five hours. This depends on the usage of the laptop, if you are going to use the laptop for all functions and actively then the battery might hold charge for a lesser period of time. One way of conserving power is to go to your Power Management settings icon in the Control Panel. You can shut off settings or programs you do not use. Also consider dimming your screen and shutting off your wireless card when you don't need it.Most of the batteries today are designed for a recharging for 400 times. Therefore technically your battery should give you good service till about two years. You require following instructions given by the manufacturer when you buy this gadget.
All types of batteries should be recharged once they tell you that the recharge is necessary. It is not advisable that your battery blanks out before every recharge, this too would damage the battery and reduce the battery life.
All batteries start losing their capacities once the charging is not done properly, it will take you some time to notice the change, that the battery which was once working for more that three days, now requires charging everyday. Once this starts happening, the deterioration is faster and you may require changing the battery within some months time or earlier.
In case of laptop batteries you can try rebuilding them. Batteries need to be handled carefully and their recharging routine needs to be followed carefully, without which there might be damage to your laptop batteries and changing these might seem inevitable.You can buy a wide range of portable components here.
And one of the most important things about laptop batteries is the choice of a new or a used/refurbished .Refurbished batteries do not hold as much power when compared to new batteries. Also, they can kick the bucket on you randomly since you really do not know how old the battery is. Our recommendation is to stick with a new battery, or be very careful who you buy your refurbished battery from.In our shop we suggest only the new batteries and other portable components
All types of batteries should be recharged once they tell you that the recharge is necessary. It is not advisable that your battery blanks out before every recharge, this too would damage the battery and reduce the battery life.
All batteries start losing their capacities once the charging is not done properly, it will take you some time to notice the change, that the battery which was once working for more that three days, now requires charging everyday. Once this starts happening, the deterioration is faster and you may require changing the battery within some months time or earlier.
In case of laptop batteries you can try rebuilding them. Batteries need to be handled carefully and their recharging routine needs to be followed carefully, without which there might be damage to your laptop batteries and changing these might seem inevitable.You can buy a wide range of portable components here.
And one of the most important things about laptop batteries is the choice of a new or a used/refurbished .Refurbished batteries do not hold as much power when compared to new batteries. Also, they can kick the bucket on you randomly since you really do not know how old the battery is. Our recommendation is to stick with a new battery, or be very careful who you buy your refurbished battery from.In our shop we suggest only the new batteries and other portable components
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