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13 9月 2018 - 10:36:29

Lenovo g550g Battery all-laptopbattery.com

Laptops, because of the amount of performance hardware inside, have some relatively beefy batteries. Technology is always improving, and where battery life used to be atrocious, we're now seeing batteries that can last far longer than the eight-hour workday. Just look at LG's new gram Z980, which manages to cram a 72WHr battery — delivering about 13 hours of life — into a device weighing just over 1kg.While in the past it was unwise and even dangerous to leave your laptop plugged into an external power source all the time, new laptops are mostly using either lithium-polymer or lithium-ion batteries that won't take more charge than they can handle. Still, there are a few things you should know about leaving your laptop plugged in.

Instead of continuing to suck up power when at full capacity, the battery in your laptop should be bypassed even if it remains plugged in. This means that power coming from an external source is used directly to power the laptop instead of it first passing through the battery.Have you noticed when charging your laptop that there's an excess of heat coming off of the bottom? This is a normal byproduct of charging, but if the temperature gets too high or remains elevated for too long, serious damage can occur.Battery University is an awesome resource that can teach a lot about batteries, with one subject focusing on the effects of heat on Lithium-based batteries.In this chart, we can see that keeping a battery at a certain charge and at a certain temperature over the course of a year can significantly diminish its overall capacity. If your laptop already has a hard time keeping cool, leaving it plugged in and at 100 percent charge is probably a bad idea.

If you're lucky enough to have a modern laptop with a removable battery — some of Lenovo's ThinkPad line is still offering this feature — consider taking it out and relying solely on the charging cable.No matter what you do to baby your laptop's battery, it's going to naturally see a decline in performance. When you charge a battery to its full potential — which is, in most cases, to about 4.20V per cell in the battery — you can expect to get a set number of charge cycles out of it. Lowering that voltage in each cell, even by a little bit, can potentially prolong the life of your battery, as seen in this chart from Battery University.Many modern laptops have software that helps deal with keeping batteries healthy. Lenovo, for example, comes with a companion app that will can change the charge threshold. Similarly, Dell's power manager has a "Primarily AC" setting that will also lower the threshold to keep the battery from sitting at 100 percent all the time.

As for some battery basics to keep in mind if you don't have any fancy software, it's generally recommended to keep your battery somewhere between 40 and 80 percent charge and to keep it cool whenever possible.If you've been using your laptop for a few months (or a few years), you might notice that the battery gauge in the bottom-right corner is no longer giving an accurate reading. You might see that you can two hours left, but 30 minutes into your movie, it powers down.A recalibration can likely solve this problem! I've already written a guide on the steps required, and the entire process shouldn't take long.We all know how much manufacturers lie about battery life. In fact, researchers found that 86 percent of them overstate it, often by testing with unrealistic usage conditions. The marketing numbers are unhelpful because you’d never be using Microsoft Office for 14 hours straight!

We can take steps to reduce our battery life usage, but, wouldn’t it be better if we just had the right number to start with?Thankfully, there's one thing they can't lie about: battery specifications. In this guide, we'll help you calculate how long you can actually expect your next laptop to last.Find the battery specification in watt-hours (the units are Whr or Wh) Divide by your expected wattage (in W). A computer under normal use will take 10-15 Watts. For example, take a laptop with a 100Wh battery such as the newest MacBook Pro. Under normal use, it should last 7-10 hours: 100Wh divided by 15 and 10 Watts gives us 7 to 10 hours respectively.The result specifies how long your laptop should last, though it may be a tad lower due to a voltage drop-off at the end of a charge. Many laptops are also set with sleep or hibernation modes that kick in when the battery drops below five or ten percent charge to protect data, so keep that in mind too.

Finding your laptop’s wattage is the hardest bit. Here is a few ways we can find or estimate it.A laptop under full load will use anywhere between 65-90W. For this reason, most gaming laptops under full load can only last about an hour. To find exactly what your full load is, either:You should be able to find the watt-hour number on any descriptive specification sheet. The numbers are also available from the specifications tab on online stores, third-party reviewers and official store pages such as the Dell web store.The number of cells in the battery isn’t helpful to our calculation, so ignore it. If you manage to find mAh and Volts, you can convert that to watt hours with an online calculator.In the minority of cases, you won’t find any of watt you need (get it, watt) and you might have to guess based on laptops of a similar model or price range.

You shouldn’t expect a rating to go higher than 100Wh due to lithium-ion flight restrictions. Anything higher needs to be approved by the airline before a flight, so manufacturers aren’t making batteries above that point.Both Windows 10 and Mac OS allow you to see information about your battery. If you’re friendly with salesperson or have a friend with the laptop you’re considering, you can ask to quickly check its battery specifications.Once open, type powercfg /batteryreport. Follow the path it outputs and you’ll find battery-report.html, which you can view in a web browser.Just look for Design capacity and divide the number you see by a thousand. If there’s a difference between Design capacity and Full charge capacity, then the battery on the laptop you’re on has worn out slightly.

If you know what they’ve been up to in their most recent change, you can also find information on how rapidly their battery is depleting by scrolling down.We can do the same thing on a Mac. Hold the option key and click on the Apple menu. From here, select ‘System information’ and navigate to Hardware → Power.The numbers you want are Full Charge Capacity (mAh) and Voltage (mV) divided by a thousand. Drop these numbers into conversion calculator to find watt-hours.Now that you're a battery life expert, it's time to get back on your laptop hunt. If you're after great battery life, make sure you take a look at the newest Lenovo ThinkPads and Macbook Pros.

What's your top laptop pick so far? Let us know down in the comments below.Nearly lost in the flood of Intel announcements at Computex—Intel’s 28-core chip, the 8086K Anniversary Edition, and more—was something a bit more fundamental: the development of 1-watt display panels, which will have a profound impact on battery life.Intel said it is working with Innolux and Sharp to develop what it calls its Low Power Display Technology, which optimizes the display technology, including the backlight and panel circuitry, to halve power from a typical power consumption of about two watts down to a single watt. They’ll be optimized for Intel’s U- and Y-series processors for ultrabooks and ultra-low-power devices.

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