A Brief Procedure Of How Do Laptop Batteries Work

The basic advantage of owning a laptop computer is its portability. The machine works on batteries when not plugged into the socket making it easier to move it from one place to another. Although the interesting question is how do batteries work in a laptop computer that enables it to run for a minimum of one hour including the processor, time clock and monitor? Just like an ordinary battery of a pencil cell or a cell phone, a battery of laptop also possesses a positive and a negative terminal which is conveniently rechargeable making it last for more than 5 years. The article further discusses the procedure on how do batteries work?

Lenovo / IBM Laptop Battery

Lenovo / IBM Laptop Battery

The key to a handy laptop is its battery. All the limelight that a laptop gets in the market these days is due to its mobility which is probable through a good running, charged battery. Though one might question themselves that how do batteries work of a laptop? The battery of the laptop works just like the batteries in remote controls, portable CD players and radio. These batteries create an electromechanical reaction that pushes a flow of electrons from one position to another while turning one end into a positive and another end into a negative terminal.

As laptop batteries are for running a big machine as compared to other portable devices therefore it has some uniqueness to it. The first thing about laptop batteries that make it different from other household batteries is that it has the capability of recharging through an adapter. The adapter can be plugged in at all times which charge the battery as well as runs the laptop on electricity. Another distinctive quality of laptop batteries is that it has multiple internal cells under a printed circuit board. Also, the sizes and shapes of laptop batteries vary according to the model of a laptop.

Now focusing on the real question as to what procedures are involved in the working of a laptop battery? First of the arrangement inside the laptop should be understood. There is multiple power cells in the laptop arranged in such a way that they are parallel to each other. The reason for having multiple internal cells lined up in parallel is to maximize the voltage level which varies according to the chemicals and concentrations used in power cells. Usually a laptop battery is capable of charging from 500-700 times due those multiple internal cells. According to Frank McLarnon who worked for Lawrence Berkley Lab elucidated to the website called Scientific American that on top of these cells is a sheet of printed circuit board just like a motherboard which controls the functions of these cells making sure they discharge and recharge properly. Apart from the circuit board, the hardware in your laptop also makes sure the battery is being charged and discharged in a proper manner without any complications which also allows us to check how much percentage of the battery has been used or left.

After you have an adapter plugged out of your laptop, a chemical reaction takes place which forces electrons to flow creating positive and negative terminals. The reaction is reversed when an adapter is plugged back in enabling it to recharge again. The procedure has to be followed exactly inside a battery enabling it to recharge and discharge safely; any problems in this procedure can cause a short circuit. As far as lithium-ion, nickel-cadmium or lithium polymer battery is concerned, the procedure to recharge and discharge is the same.

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4 Comments

  1. Aitian
    Posted April 7, 2008 at 7:46 pm |

    Brightness: how low can you go? Without any question, the fastest way to suck the life out of a battery is leaving your brightness high. Turn it down as low as you possibly can without needing to up your glasses prescription. On my Vaio, I can select from one of 8 levels. During one test, at brightness level 3 my system reported 60% full, with 3:52 (all times are hours:minutes) of life to go. I switched up to level 5 and in 17 minutes of use, I was down to 52% full, with 3:06 to go. In other words, 17 minutes used 46 minutes worth of battery (all other variables were held constant). You can even be so bold as to lower your brightness all the way down when sitting idle for a minute or two (for example, if you are writing a long blog post and pause to clarify your thoughts before typing).

  2. Aitian
    Posted April 21, 2008 at 1:35 am |

    Thanks you to supply the such useful information, these material let me understand many.

  3. Lian
    Posted April 21, 2008 at 1:39 am |

    Batteries for laptops have a unique challenge – they must be small and lightweight. In fact, the laptop battery should be invisible to the user and deliver enough power to endure a five-hour flight from Toronto to Vancouver.

  4. Aitian
    Posted April 21, 2008 at 1:42 am |

    As Lawrence Berkeley Lab’s Staff Scientist Frank McLarnon Explained To Scientific American.Com: “When A Battery Is Discharged, An Electrochemical Oxidation Reaction Proceeds At The Negative Electrode, And An Electrochemical Reduction Reaction Occurs At The Positive Electrode.

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  1. […] A Brief Procedure Of How Do Laptop Batteries Work The basic advantage of owning a laptop computer is its portability. The machine works on batteries when not plugged into the socket making it easier to move it from one place to another. Although the interesting question is how do batteries work in a laptop computer that enables it to run for a minimum of one hour including the processor, time clock and monitor? Just like an ordinary battery of a pencil cell or a cell phone, a battery of laptop also possesses a positive and a negative terminal which is conveniently rechargeable making it last for more than 5 years. The article further discusses the procedure on how do batteries work? […]