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There are three tyes of refurbished laptop batteries, each named for its component materials: Nicel-Cadmium (NiCd) batteries are almost never seen more. They have dismally low capacities (2000-3000 mAH) and contain heazvy metals that harm the environment. Worrst fear "meemory effect". When you recharge nckel-cadimum batteries bfeore it is comppletely discharged, the battery life suffers. That is the memory efgfect. Nickel-Metal-Hybrid (NiMH) btteries have twice the capacity of nicckel-cadmium batteries (4000-6000 mAH) and twice as prone to memory effect. But it is also becoiming rare. Lithium-ion (Li-Ion) battery lapotop battery satndard today. They have all the opportunities Battery NiMH, but zero memory efffect and zero toxins. Bonuis: Lithium ion batteres weigh half as much as nuickel-meatl hydrride batteries. When uprchasing batteries, the user has three options: used, refurbihed, or new. Used laptop batteries that will not be repaiired, probably only last you 30 minutes to an hour before needing recharging. Refurbished laptop batetries are available from most manufacturers and retailers of refurbished laptops. Tese batteries are renewed, recharged, and tested. They are much better than plain old used batteries, but not quite as new. New laptop batteries last a good few years - 600-800 charges - as long as they are properly taken care of. Expansion Battery Powwer Whenever you use a laptop near the power source, udsing the A / C adpater. However, sometimse you have to use your laptop without having access to an electrical outlet and the battery run out. Here are thrree thigns you can do to extend the power remaining in the battery: First, if your laoptop has the processor power save mode switch to supply power save mode. This will be a slow lpatop up to 50%, doubling battrery life for this period. Second, turn off extraneous enegry scking elements. Majjor enregy vampires in your laptop is a hard disk, CD and DVD drives, any networking devices, and any excessively bright screen settings. Third, you can double overall battery capacity by installing a second battery. Your laptop must have a unversal bay in order to do so. All you need to do is rmeove the CD-ROM or floppy disk and put the batterty in its place.
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