Battery Back Door
2010
Battery Buying Guide—Find Your Laptop's Battery
The Different Types of Laptop Batteries
Laptops are powered by several different types of batteries. These batteries provide direct-current power to your laptop.
Lithium-ion: This is the type of battery you want to have in your laptop like HP Pavilion dv9000 Battery. This type is lightweight and performs better than the other types of batteries. Unlike NiCad or NiMH batteries, lithium-ion batteries don't have the dreaded "memory effect." The memory effect is the property of nickel-cadmium batteries that causes them to lose their capacity for full recharging if they are discharged repeatedly the same amount and then recharged without overcharge before they have fully drained. There's usually a rapid-charging option with lithium-ion batteries, which is good when you're in a time crunch. Finally, this type of battery is more environmentally friendly than the other types.
Two older types of batteries, once popular in portable computers, are nickel-cadmium (NiCad) and nickel-metal hydride (NiMH). The NiCad isn't often considered for laptops these days because it suffered unpleasantly from The Dreaded Memory Effect. A NiMH battery is longer lasting than a NiCad, but it too woefully suffers from The Dreaded Memory Effect.
You can confirm which type of battery your laptop has by looking at its label. See the next section.
A few Laptop Computers out there are still using NiMH batteries. This is fine, of course, but you might want to check to see whether you can find a battery upgrade to the Li-ion type.
To prolong the FUJIFILM NP-80 battery life of a NiMH battery, I recommend fully discharging it every so often. For example, after you use, drain, and recharge the NiMH battery about four times (or so), do a complete drain and then recharge it again. That should help the battery last a bit longer.
Your laptop might have two additional batteries inside. A secondary, alkaline battery inside is used to power the laptop's internal clock. An optional third battery keeps things powered for the minute or so that it takes you to swap out a spent main battery with a fresh one. See the section "Love that spare battery," later in this chapter.
Using unapproved batteries in your laptop may lead to bad situations, such as, oh, the laptop catching fire and exploding. If you doubt me, look up exploding laptop on YouTube.
Find Your Laptop's Battery
Finding your laptop's battery can be tricky. To find your battery, look for a small compartment in the bottom of the laptop. Other laptop batteries are located in a hole or door in the side of the computer
The battery may be labeled, describing what type of battery it is as well as other information about the charge it holds, its serial number, its replacement information, and so on. Note that often this information may be printed on the Laptop Case instead of, or in addition to, being on the battery. Follow these additional guidelines:
Know where your battery is stored in your laptop. You may need to remove or replace it in the future.
Most laptops use a few sliding locks or clips to help keep the battery in place. Don't force a battery into or out of your laptop.
Batteries get warm as they're being used. That's simply their nature. However:
Watch out if the External Laptop Battery gets too hot! For example, the battery can get too hot to touch or hold for more than a few seconds. That could be a sign of a malfunctioning battery, and such a thing is dangerous. Phone your dealer or laptop manufacturer immediately if you suspect that the battery is running hot.
About the Author
Professional battery shops
UK shop: http://www.global-battery.co.uk
US shop: http://www.sales-battery.com
Both are the retailer and wholesaler of laptop batteries (Dell Laptop batteries),digital gamera batteries,camcorder batteries and battery chargers. These are top-quality Digital Camera Batteries at the lowest possible price available.
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