Joint Civil Laptop batteries used by computer can be divided into three types: batteries nickel cadmium (Ni-Cd), nickel-hydride batteries, metal (Ni-MH) and lithium-ion battery (Li-Ion). Summary of their characteristics are as follows:
Nickel-cadmium batteries: Nickel-cadmium batteries are the first type of batteries used in laptops, because the technology of battery production, production technology is not sufficiently advanced, so-nickel batteries Cadmium has many shortcomings, such as the ability of small, bulky and so on. Ni-Cd battery loading and unloading of approximately 300-700 times, but the charge-discharge process if not handled properly, there will be “memory effect” (so called “memory effect is the Dell Latitude D410 battery charge until the battery has not been completely exhausted, over time will reduce the nominal capacity of battery), making life shortened. Drums In addition, cadmium is toxic and, therefore, nickel-cadmium is not conducive to protecting the ecological environment. Many gaps, nickel-cadmium batteries, notebook batteries have been removed from the range of applications.
Ni-MH battery: laptop batteries used in the second generation of Ni-MH batteries, Ni-MH battery Ni-Cd batteries have a relatively greater than the energy density means that no additional weight in the circumstances, Ni-MH battery can be effective in laptops to extend working hours. Ni-MH battery life is very long, can reach approximately 1000 charge-discharge Ni-MH battery Another advantage is greatly reduced by the presence of nickel-cadmium hp Pavilion dv4000 battery “memory effect” problem, which makes nickel-hydride battery metal may be more convenient to use.
Lithium-Ion Battery: Lithium-ion battery with a lightweight, high capacity, no memory effect, etc., which has been widely used – the vast majority of laptops today use lithium-ion battery, although its price is relatively expensive. Lithium-ion battery energy density battery cell present in the highest, its capacity is the weight of nickel-hydride batteries, metal 1.5 to 2 times, but has very low self-discharge rate. Lithium-Ion batteries have no effect “memory”, as well as non-toxic substances, etc. are also widely used in laptops just cause. Although the life of lithium-ion battery is shorter than Ni-MH battery (usually about 400-800 times the number of charge-discharge), but its status in terms of daily use, Ni-MH TravelMate 290 battery performance significantly better than lithium-ion battery, so we must try to choose Li-ion laptop batteries.
