subject: In Search For A Laptop Battery [print this page] Try to google the keyword laptop battery and you will be surprised with the number of websites you will see. Well, there are 19,300,000 websites to date. This is less important, nonetheless, if you do not know the what, where and who in purchasing a laptop battery.
In order to help you decide on this matter, I have listed down seven groupings that you need to be aware of.
1. First on the list are the part number, make and model. Part number refers to the sole attribute designated to a piece in order to make referencing easy and simplified. It also helps to unmistakably identify a piece in a manufacturer?s product. This is very important for you to be able to buy your battery as this will be asked from you. The make and the model come as the next most essential part attributes. Make refers to the manufacturer?s name such as HP, Dell or Sony. The model, on the other hands, is a combination of words and numbers and is commonly referred to as the model number. Let us take the case of Sony VAIO VGN-FZ90S. By this, you will be able to identify that the product was manufactured by Sony and belongs to the VAIO chain with VGN-FZ90S as its model number.
All of these data can be obtained in the systems data of your computer by just going to properties. The part number of the battery can be on the battery itself.
2. Configuration. The lithium-based battery configuration is widely used by laptops and that is what you must follow. That is why it will do you good to check the configuration that your battery needs.
3. Facility. Facility or battery capacity calculates the overall sum of power accumulated in a battery.
The higher the ability the longer the runtime is between charging the battery. The ability of a battery is measured in amperes, which is the quantity of electrons passing via the batteries electrolyte every second. The most usual notation system used is milliamp hour (mAh) for electronic batteries of consumers. Do remember that 1Ah is similar to 1000 mAh.
Knowing your pre-requisites on a battery?s capability is significant before purchasing one. Through these pre-requisites, you will be able to figure out the duration in using your laptop with the battery on as well as what to do if the battery is already low. Normally, expensive batteries have greater capabilities thus giving you more time to work prior to re-charging it.
4. Voltage. Also known as volts, this measures the power potential of the battery. It is mathematically computed by multiplying the current to the resistance (I x R = V) whereby I is for current, R is for resistance and V is for volts. It is similarly described as the Electrical Potential difference. The expanse of power entailed to budge one item from a place to another against a diversity of energy types is what electrical potential difference is in Physics.
Electronic potential difference in electronics is the sum of work/charge required to shift an electric charge from the next position to the first, or equally, from the first position to the next. There are four exclusive kinds of battery voltage measurements which affects battery life.
a. The Float Voltage refers to the zero current of battery voltage when battery is disconnected.
b. Nominal voltage is the voltage of the battery which has a range from 3.7, 5.2, 10.2, 12 volts and so on. This simply states that a voltage range subsists relying on the battery?s number of cells. A battery with 12 volts has 6 cells and 12 volts of float voltage.
c. The Charge Voltage is the voltage when charging the battery.
d. The charge state and the generated power streaming within the battery establish the Discharge Voltage. Of course, this occurs when the battery is discharging.
The most frequent and majority voltage measurement of most laptop batteries is: 7.2, 9.6, 10.8, 11.1 and 14.1 volts. Because you cannot select the voltage measurement of your laptop, you need to buy something which is near the measurement of your original battery. Nominal voltage permits for a minor variation from the original. Nevertheless, a 7.2-volt battery cannot be used if what is needed is 14.4 volts. To illustrate this, an 11.1 volt battery can be used for a 10.8 volt battery.
5. The watt hours. Fundamental components of measure for Direct Current (also called DC) are Whr, watts, volts and amperes. A good example of a direct current energy source is the battery. The combined dimension of Volts multiplied by the Amperes gives us the Watts. The latter is indispensable as it corresponds to the electrical power exhausted by a battery and utilized by an electrical device. In effect, a watt is the gauge of the expanse of work performed by specific amperage of electric power at a specific voltage or pressure. To measure watt hours, just multiply volts with the capacity and then round off the product.
6. The number of cells determines the battery capacity. Therefore the more cells there are, the higher the capacity of the battery will be. In order to have a good knowledge of the number of cells your laptop battery has, you also need to have an inkling of the cells that are being utilized by your battery. Sony, LG, Panasonic, Sanyo and Samsung are just a few of the battery manufacturing industries that produce the well known 18650 battery cell.
Battery cell 18650 is a Li-ion cell with a circular shape and has a voltage of 3.6. Compared with the NiMH battery, it lasts longer and cannot distinguish amid digital memory effect. With high energy mass, it is suitable for structuring laptop batteries along with other variable power mechanisms. It is likewise lightweight.
With a nominal voltage average of 3.7 volts, the 18650 battery cell has a 2200 mAh nominal capacity. The maximum charge current is 2.4 Ah and maximum discharging current is 4.6 Ah. The 18659 is 18.3 x 64.9 mm and weighs 46.5 g, which is about 1.64 ounces. Eighty percent of its start-up capacity is the cell cycle performance at 300 cycles. Overall, the 18650 cell battery is rated as a good buy.
To determine the number of cells in your laptop battery, you need to use the 18950 as your base. From the stated voltage of your battery, you then divide it with the 18650?s nominal voltage to arrive at the number of cells in series. Next, from the stated battery?s capacity, you then divide it by the 18650?s nominal capacity to arrive at the number of cells in parallel. You then get the product from the parallel and the series to arrive at the total number of battery cells.
7. Seventh are the seller, cost and warranty. After getting all the needed data, you can now select the merchant who you want to buy the battery from. Things you must consider in selecting a merchant when buying a laptop battery are the merchant?s reputation, the warranty, return policy and most importantly, the price. It is always wise to talk to a sales representative who can answer your concerns. Make sure, too, that the merchant is someone who is trustworthy. Do not be misled to buying second hand batteries for your laptop or ending up buying the wrong kind of battery.
