Laptop Battery
by FHKE

Tell You Prolong the Life of Your Laptop Battery

Initialize a new Laptop battery. New laptop batteries should be fully charged before their first use to obtain maximum capacity. Nickel-based batteries should be charged for 16 hours initially and run through 2-4 full charge/full discharge cycles, while lithium ion batteries should be charged for about 5-6 hours. Ignore the phone telling you that the battery is full–this is normal but is not accurate if the battery is not initialized. #DO NOT fully discharge a lithium-ion battery! Unlike Ni-Cd batteries, lithium-ion laptop batteries’ life is shortened every time you fully discharge them. Instead, charge them when the battery meter shows one bar left. Lithium-ion batteries, like most rechargeable batteries have a set amount of chargers in them.

Keep the Laptop battery cool. Your laptop battery will last longest if used near room temperature, and nothing wears on a battery like extended exposure to high temperatures. While you can’t control the weather, you can avoid leaving your laptop in a hot car or in direct sunlight. In addition, check the Laptop battery while it’s charging. If it seems excessively hot, your charger may be malfunctioning.

Charge your Laptop battery correctly, in accordance with its type. Most newer laptop have lithium-ion batteries, while older ones generally have nickel-based batteries. Read the label on the back of the battery or in the technical specifications in the manual to determine which yours is.

Nickel-based batteries (either NiCd or NiMH) DO NOT generally suffer from a misunderstood phenomenon known as the “memory effect.” The term “memory effect” has been widely mythologized to describe any and all deterioration of NiCd (and other battery chemistries), in many cases misleading consumers into further shortening the lives of the batteries through over-discharging to “recondition” them. [This section formerly read: If you charge the battery partially enough times, eventually the battery “forgets” that it can charge fully. A nickel-based battery suffering from memory effect can be reconditioned, which requires the battery to be completely discharged, then completely recharged (sometimes several times). The appropriate length of time between reconditionings varies. A good rule to follow for nickel-battery cell-phones is to discharge them completely once every two to three weeks, and only when you have a charger available. Lithium ion batteries can be preserved by careful charging and avoiding storing them at full charge.They do not require “reconditioning.” Regardless of the battery type, use only a charger rated for your battery, and discontinue use of a charger that causes the battery to heat up excessively.

Store Laptop batteries properly. If your battery will be out of use for a while, disconnect it from the laptop and store it in a cool place (the refrigerator is good, but freezing temperatures do not slow oxidation) and away from metal objects. Ensure that the battery is not exposed to moisture; try putting the battery in an airtight container or bag. Lithium ion batteries are not rated to operate at refrigerated temperatures, so let the laptop battery sit outside the refrigerator for at least an hour before using it again. Lithium ion laptop batteries oxidize least when they are stored at 40% charge. Never store a lithium battery at low voltage. Recharge batteries after storage.

Clean the laptop battery contacts on the battery and on the laptop. Over time, contacts may accumulate dirt. Clean them with a cotton swab and rubbing alcohol to maximize the efficiency of energy transfer. In addition, if the contacts are two different metals, such as gold and tin, accelerated corrosion known as “fretting” occurs. Cutting the corrosion from fretted contacts often requires solvents, such as acetone or nail polish remover. Be careful: these solvent dissolve plastic, so use a Q-Tip to avoid damaging the battery housing or the laptop.

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