Last Charge of modern lithium batteriesIon batteries are a technical miracle, able to store a lot of energy in a relatively compact space. However, their ability to provide electricity is still limited. Eventually lithium. The ion battery goes dark or loses its original capacity, so it's actually useless. Sudden death of battery is rare. The death spiral is usually a slow but steady decrease in capacity from the day you start using it. Each charge consumes a little life until there is no more to give in the end. Other conditions also reduce life-for example, the high temperature drains the battery even when it is not in use. In the end, you will notice that your laptop is not charging for a long time. While you may not be able to use your laptop from a power outlet in the end, your decision to buy a replacement may depend on your tolerance for decreased endurance. Before you try to buy anything new, you first need to figure out if your notebook can be repaired easily. Most laptops, especially Windows PCs, can be removed by pressing just a few clips at the bottom, which releases the battery and makes it free. Even for the most inexperienced users, this makes the replacement simple. The old package slipped out and the new one slipped in. There is no need to mess up with a screwdriver or pliers. However, there are exceptions to this rule. Apple MacBooks is the most eye-catching because they are very popular and they have batteries in their case, which means they are not easy to replace. There are also some Windows computers using this method. Alienware M11x and Lenovo U260 are two examples. If it's not easy to remove the package, then you may need to call the manufacturer to see how they handle the situation. In some cases, you can still perform the service yourself, but you have to remove the screws and take apart part of the laptop case. Finding the new battery pack that comes with the laptop is rarely standardized, or if it is standardized, it will be standardized for a specific number of models. The Lithium-The ion battery is quite flexible in the way it is packaged, so companies often use it at will so that they can achieve other goals by design. So the brand that makes the laptop should be the first source for you to change the laptop. Get your wallet ready because it's usually a cheap effort. Typical price of new lithiumIon pack is at least $100, some of which cost up to $200. Capacity is often a determining factor. The larger the capacity, the higher the price. However, buying from the company that made the laptop means that you received the same parts as the original equipment. The peace of mind that comes with it is often worth the extra money. If your laptop is a few years old, finding the battery from the original manufacturer may not be an option. In the end they will stop producing replacement parts and the inventory will run out so you have to turn to after-sales market which unfortunately is not a consumerfriendly. The third question. There is no provision for the party's battery pack. The company will declare a certain capacity or build a package to adapt to a specific model, but there is no independent organization to verify this information. In addition to this, many packages are sold through eBay or other indirect sources, which may make it difficult to obtain customer service. Spend more than $100 on the third projectIt is not recommended to choose a party because the existing products are not reliable enough to guarantee a large investment. You 'd better spend your money on your new laptop. Sometimes buying new batteries for your laptop is not a better solution. Unfortunately it will eventually wear out and it's too expensive to buy a new one, however, it's just the condition of the market today and you can't change it. Consider the price of the new package and the price of the new laptop with acceptable specifications. If the price of only buying batteries is 25% of the price of a brand new laptop, then the future route may be a better choice. University of battery-rechargeable lithium-