How to use a newly purchased laptop battery? Compared with the hardware configuration of the laptop, consumers seem to pay less attention to the laptop battery, and have not studied its warranty in detail. In fact, laptop batteries are standard accessories for laptops. Said that it plays a key role in the stability of the whole machine. Some time ago, a series of notebook battery explosions and fires made notebook quality issues the focus of public opinion. For a time, various manufacturers recalled notebook batteries with fire hazards, resulting in On the other hand, with the rapid development of Centrino technology in recent years, the performance of notebook computers has been greatly improved. On the contrary, the battery life of notebook computers does not seem to have been substantially improved. Like mobile phones, it seems that standby time is inversely proportional to performance, so for some friends who often go out, in addition to choosing some notebooks with long standby time as a selling point, purchasing a second notebook battery has become their choice. , the laptop battery market is not yet standardized enough, and there are many fake and shoddy batteries that even pose safety risks. So today I have compiled some information on the purchase and maintenance of laptop batteries. I hope it will be helpful to my friends.
Classification of laptop batteries
There are roughly four types of laptop batteries: nickel-cadmium batteries (Ni-Cd), nickel-metal hydride batteries (Ni-MH), lithium-ion batteries ( LiB) and lithium polymer battery (LiP).
Nickel-cadmium and nickel-metal hydride batteries were once widely used in notebooks. Their biggest advantage is that they store a large amount of electricity and therefore have greater energy. However, compared with lithium batteries, they still have many shortcomings: first, The charging time is long. Friends who have experience using AA batteries for digital cameras must still have the impression that even with a fast charger, the charging time of NiMH batteries usually takes 6-8 hours. Secondly, there is a certain memory effect, which means that in order to extend the battery life as much as possible, the battery needs to be completely discharged before the next charge. Lithium-ion batteries have the highest energy density among commonly used batteries. Its unit capacity is more than 1/3 higher than that of nickel-metal hydride batteries, and its self-discharge rate is very low. Moreover, the "memory effect" of lithium-ion batteries is very weak and does not contain toxic substances.
However, lithium-ion batteries also have many shortcomings. Ordinary lithium batteries can only be charged less than 1,000 times, and the price is relatively high.
At present, except for a few notebook batteries that still use old-fashioned nickel metal hydride and nickel cadmium batteries, the vast majority of notebook batteries use ordinary lithium-ion batteries, while polymer lithium batteries are used in some high-end thin and light notebooks. use.
Origin of laptop batteries:
Our common telecommunications origins of laptop batteries are generally Japan, South Korea, Mainland China and Taiwan Province of China, with Japan mostly producing the most famous batteries. Manufacturers include Sanyo, South Korea's LG, Samsung, etc.
About power：
We often see a manufacturer promoting its products by using numerical values such as how many cells and how many mAh to represent the battery power. In fact, this is a wrong understanding. Over time, people will think that the number of milliamperes is more The larger the battery, the longer the working time of the battery. In fact, the indicator that determines the power consumption of the computer is the power nominal we commonly use, not simply milliamp-hours. The power of the battery should be obtained by multiplying the voltage by the current. For the same mAh battery, it mainly depends on the number of cells and the hybrid connection method. For example, an 8-core hybrid connection of 2 parallel and 4 series will be better than 2 parallel 2 series of 4 The power of hybrid cells is much higher. If you want to ask which indicator of battery power is the most reference, the number of cells and the hybrid method should be the first thing you consider. However, the increase in the number of cells will also lead to an increase in the weight of laptop batteries, which consumers should pay extra attention to.
About the appearance:
Laptop spare batteries are like car spare tires. The tires you choose should match your car model. Original tires are best, and laptop batteries are the best. Also choose the ones produced by the original factory. In the past, the molds for assembling battery casings are mostly imitations of the original batteries. After installation, it is impossible to achieve a "perfect fit" and may even fall off. You should also pay attention to the identification. Generally speaking, assembly The labeling on the battery is blurry, and the electrodes of some refurbished products are severely worn, and the gloss is not as good as the original ones.
At present, due to the invasion of a large amount of electronic "foreign garbage", some southern cities in my country have become hotbeds for the refurbishment of used batteries. Many refurbished batteries only need a few minutes of simple processing ( Known as the high-current activation method by insiders), used batteries can be recharged and their lifespan can reach about half a year, but there are also safety hazards.