What is the difference between Nickel Cadmium, Nickel Metal Hydride, and Lithium Ion battery for HP Pavilion DV5? Which chemistry is the best for a conventional laptop? If you are like many HP Pavilion enthusiasts who grapple with the foregoing two questions, while buying replacement batteries offline or on the Internet, this article highlights the three chemistries in detail. It talks about their principles, pros, and cons, to help you make the correct decision the next time you are looking for the best HP Pavilion laptop battery.
Nickel Cadmium Batteries
Did you know that Nickel Cadmium, also known as Ni-Cad was the first chemistry used in the rechargeable laptop batteries? Ni-Cad batteries consist of a nickel oxide material at its cathode (positive electrode) and a cadmium compound at its anode (negative electrode). When these materials react with the electrolyte (potassium hydroxide) in the battery, they convert chemical into electrical energy and discharge power that boots up your laptop. Upon recharge using the recommended HP Pavilion DV5 adapter, the convert electrical energy from the AC outlet into chemical energy, and the cycle continues. In ancient years, Ni-Cad batteries were a favourite of several laptop battery manufacturers, including HP, because of their low manufacturing costs. They were also easy to manufacture and very safe even if mishandled. However, because of their charge memory effect, low capacities, and inefficiency, they ceased being the gold standard as manufactures discovered other chemistries. There is a slim chance you will find a Ni-Cad HP Pavilion DV5 battery today.
Nickel Metal Hydride Batteries
Nickel Metal Hydride, also known as Ni-MH, laptop batteries are close relatives of their Ni-Cad counterparts. However, instead of having cadmium as the active element of their anodes, Ni-MH batteries use a metal called Hydride (alloy between rare earth metals and Lanthanum). The metal absorbs hydrogen ions from the battery's electrolyte (potassium hydroxide), and helps to generate energy that powers the laptop. During charging, the converse happens. Like their Ni-Cad counterparts, Ni-MH batteries were a favourite of many manufacturers in the early '80s, mainly because of their low manufacturing costs. They are also readily available in many online stores to date. The only disadvantage of buying a Ni-MH HP Pavilion battery is that like Ni-Cad, they suffer the memory effect. Compared to other chemistries, they are also less efficient, and need high maintenance.
Lithium Ion Batteries
Over the years, Lithium Ion (Li-Ion) batteries have become the gold standard for use in laptop batteries, PDAs, and other portable application. Unlike nickel cadmium that use Nickel as their source of power, Li-Ion batteries use lithium ions. Though they are less powerful than traditional lithium metal, they are very safe for use at various temperature ranges. Lithium Ion batteries have also become popular because of their high energy density to size ratio. Li-Ion laptop batteries are also very safe. They have components that monitor temperature (thermostats), and an internal circuitry that cuts of the battery's power when its chemicals become unstable. The only disadvantage of buying a Li-Ion HP Pavilion DV5 battery is that they are costly. You have to do the mandatory legwork, and dig deeper in your pocket if you want the best accessory for your HP Pavilion DV5 laptop.
Article Source: For more information about HP pavilion DV7 battery, please go to http://www.laptopsbattery.net.au
In many instances, the selection of the most suitable battery for a particular application can be a very complex calculation that can only be performed by the end user as a number of the factors relating to life cycle cost are outside the control of the battery supplier maintenance.Thanks for the wonderful information.
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