Laptop computer design is a compromise between the power that users want and the battery life they expect. Unfortunately, portability and performance often work against each other.
An extended-life, large capacity battery keeps you working longer but adds bulk and weight to your laptop. Manufacturers typically offer several options. For example, Sony’s VAIO series is known for excellent battery life using conventional high-capacity or sheet batteries.
Laptop Battery Basics
Laptop batteries typically use lithium-ion technology, which provides excellent power output at a relatively low weight. They’re also immune to the “memory effect” that sapped life from older nickel-cadmium batteries. They’re usually made by assembling a number of small cells into a battery pack, which is why the terms “6-cell” and “9-cell” describe them.
Their output is measured in milliamp-hours, a rough measure of their power capacity. For example, at 7,500 milliamp-hours, Sony’s VGP-BPL21 high-capacity battery lasts 50 percent longer than the standard battery included with most VAIO laptops.
Lithium-ion batteries are manufactured in many shapes and sizes. Most laptop batteries are either wide and flat or thick and narrow. Sony’s standard batteries are the thick and narrow oblong style, which provides a better power-to-weight ratio.
Most Sony VAIO models use one of two similar high-capacity batteries, the VGP-BPL21 or the VGP-BPL13. Older models such as the CS and FW series VAIOs used the 7,200 milliamp-hour VGP-BPL13, while most newer models accept the higher-capacity BPL21. The BPL13 is no longer available from Sony, but it can still be found through third parties.
For users who need the ultimate in battery life, Sony offers the option of combining a regular high-capacity battery with a sheet-style battery such as the VGP-BPSC24, rated at 4,400 milliamp-hours. Together with the VGP-BPL21, the sheet battery provides a joint rating of 11,900 milliamp-hours.
That’s more than twice the power of the standard battery. For some users, the combination can provide enough power for 10 or more hours of normal use. Sheet batteries are designed to fit onto the bottom of specific laptop models, mimicking their size and shape. They make the laptop thicker and heavier but provide the ultimate in battery life.
Helping Your Cause
If maximum battery life is your goal for portable use, there are a few things you can do to help your Sony do its best. Remove discs from your optical drive when it’s not in use and detach any flash drives you aren’t actively using.
Dim your screen and shut off your wireless connection when it’s not needed. Use the computer’s power-management utilities to reduce your usage by spinning down the hard drive between uses. Some VAIO models have a utility called the Battery Control Function, which you can find in VAIO Central.
It prolongs your battery’s lifespan by limiting your charge to 80 percent of full capacity. For maximum life per charge, turn it off.
As the pressure to pass standardized tests increases, even preschools are spending more time on strictly academic subjects. Instead of a general introduction to the alphabet, many preschools include a ...Read More
Just because your little learner's lead teacher makes it look easy, doesn't mean that acting as an early childhood educator is simple. Teaching preschool age children requires highly specialized training ...Read More
The best time to send your child off to school depends largely on whom you ask. Proponents of starting kindergarten as early as possible believe it gives a child a ...Read More
Your little one may face a culture shock in daycare if your Christian values prevent him from doing things that are common in many daycare centers. That does not mean ...Read More
In the world of foster care and adoption, when it comes to siblings, keeping them together is always the first choice. Even though in your mind, you see yourselves all ...Read More
Most parents adore that toothless gummy grin, but whether you like it or not, teeth begin to surface as your baby turns around 6 months old and his first milk ...Read More
You can use the camera on your iPod Touch to take VGA-quality photos and store them on the device, but you can also transfer high-quality photos from your computer to ...Read More
Because it's not enough that your preschooler or kindergartner can build an amazing sand castle and (almost) tie her own shoes -- now you have to worry about her math ...Read More
While an early educational program might not ensure that your preschooler is Harvard bound, it can help her to learn better. Whether you are looking to build on a specific ...Read More
In the beginning of the PC revolution, when monitors where often 12 to 14 inches in size, using your keyboard directly in front of the screen was not an option; ...Read More
Instilling self-control by establishing and sticking with rules is the name of the game when it comes to reigning in misbehaving toddlers and preschoolers. Self-control -- something many adults could ...Read More
As the mom of a toddler or preschooler, you are probably well acquainted with the magic of dipping. There's just something about dunking her meal that can get even the ...Read More
Potty training is a normal part of every child's physical and emotional development, but not every child develops at the same pace. If your child is resistant to potty training ...Read More
The grief that accompanies parental death can trigger psychological side effects for your child. If these psychological effects are long term or if they interfere with your child’s emotional or ...Read More
According to the Encyclopedia on Early Childhood Development, 80 percent of children living in the United States have at least one sibling. Many children have more than one sibling, and ...Read More
There are a number of psychological tests used to measure intellectual ability in children, but there are a limited number that are available for preschool-aged children. Although measurement of skills ...Read More
Toddlers are curious by nature. Young children in the toddler stage are discovering their independence and are interested in exploring the world around them. However, their exploration can lead to ...Read More
You don't have to break the bank to throw your little one a top-notch bash. Free or low-cost places such as public parks are creative alternatives to the more pricey ...Read More
If you're looking for a fun activity for you and your preschooler, (and an unforgettable party treat) these puppy cupcakes are sure to please. If you want to get creative ...Read More
Sensory play activities are enjoyable and educational for your toddler or preschooler. You're encouraged to join in the fun but expect to get your hands messy! Any pastime that stimulates ...Read More