Types Of Laptop Batteries -war3.replays.net

Marketing-Direct Some laptops feature two secondary alkaline batteries to power the internal clock. There also may be a third battery to keep the system running while the main battery is removed and replaced. Laptop owners concerned with battery performance should check the battery label to verify battery type. Throughout the years there have been many technologies involved with notebooks, and laptop batteries are no different. There are actually three distinct notebook battery types on the market today. Knowing the difference between them will help you decide on exactly what to get when the time comes for a purchase. Nickel Cadmium – NiCd batteries were actually the first rechargeable laptop batteries ever. Manufactures loved them because their cost was relatively low and they had a high output. You won’t find Nickel Cadmium batteries being used anymore, due to them being heavier and not as efficient as the newer laptop batteries. Nickel-cadmium (NiCad) batteries feature economical price, high discharge rates and long life. Manufacturers recommend a slow 24-hour charge before first use. This slow charge revives electrolyte redistribution. During long storage periods, electrolytes sink to the bottom of the cells. Initial charge before use also helps provide all the battery cells an equal charge level. NiCad batteries provide high current output and last through 500 charge cycles. Nickel Metal Hydride – NiMH batteries can still be found all over the place — particularly for older model laptops. The rechargeable NiMH laptop battery was a big step up for notebook technology mostly in part because they were more reliable than the NiCd batteries, and they had an even higher output. The NiMH battery was also cheaper to produce, and safer to use. The only issue with NiMH batteries is that they can have a memory effect. Basically, if you don’t fully discharge the battery, it can remember this and leave you with a less than perfect battery output. The total holding capacity of all laptop batteries decreases with age. Nickel-metal hydride (NiMH) batteries feature 30 percent more capacity than a standard NiCad of comparable size and contain fewer toxic metals. NiMH, although environmentally more desirable, has reduced cycle life compared with NiCad. Discharging and recharging a NiMH extends the life of the battery, but unlike NiCad, is not crucial for optimal performance. Lithium Ion – LiON batteries are now used in most new laptops. Unlike the NiMH battery, LiON laptop batteries have no memory effect. LiON batteries are also lighter than both NiCd and NiMH notebook batteries. Both of these advantages equal out to the Lithium Ion battery being the most popular and most expensive among the various notebook power sources. You are probably wondering which type of battery to get. Getting a Lithium Ion battery would be the best solution, and if you have the money that is what I recommend. If you cannot afford a LiON battery or your notebook is not compatible with one, then getting a NiMH battery is the next best thing. Lithium-ion batteries, also called Li-ion, feature rapid charging options and superior performance over nickel-cadmium or nickel-metal hydride models. Although they rarely catch on fire, Li-ion batteries are considered flammable. Li-ion batteries, susceptible to damage from overcharging, should be charged only with the laptop’s original battery charger. Because the batteries have high energy density, damage such as crushing, puncture or disassembly can cause physical injury from toxic materials spread by fire or explosion. About the Author: 相关的主题文章: