Low-power Haswell go into thinner and lighter devices
Intel will continue to cut the power consumption of Core-branded chips to get its mainstream silicon into thinner and thinner devices.
The chip giant said today that it will shave the power envelope of its 4th Gen Core processor, aka, “Haswell”, down to a rating of 4.5 watts. Intel calls this yardstick Scenario Design Power (SDP).
Intel had previously disclosed at Computex in June that the lowest Scenario Design Power rating for Haswell would be 6 watts. This indicates that it has made progress in ratcheting down the power consumption even more.
Laptops — Intel’s mainstay market — on the other hand, almost invariably come with fans to keep the systems cool, and, accordingly, have to be thicker and heavier to accommodate the fans.
For consumers, more power-efficient Haswell processors mean thinner, lighter laptops and hybrid laptop tablets, many presumably running Windows 8.1 and some thin enough to be fanless. Whether PC makers would use the low-power Haswell chip in a pure tablet design is not clear at this time.
Most future Intel-powered Windows tablets are expected to use the “Bay Trail” Atom chip. Bay Trail is part of the new Silvermont Atom family, Intel’s most Dell latitude e5400 battery power-frugal design — aimed at fanless devices like tablets and smartphones. Yet, it doesn’t deliver the performance of Intel’s mainstream Core Haswell chips.
The difference between a fan-equipped design and a fanless design is probably best illustrated by Microsoft’s two Surface tablets. The Surface RT tablet is a fanless design that uses a power-efficient Nvidia ARM chip. The Surface Pro model is thicker and heavier, and packs a fan to keep the more power-hungry Intel Ivy Bridge chip cool.
New Acer Aspire M5 Laptop combine long battery life and powerful performance
Acer expanded its M5 Series line of laptop computers with the M5-583P-6428. Continuing to combine powerful performance, longer laptop battery life and outstanding value, the M5-583P brings the following new features to the M5 Series, including “Haswell,” the 4th Generation Intel Core i5 Processor, Intel Wireless Display technology (WiDi) and a powerful sound system. Available now, the M5-583P-6428 is offered exclusively at Best Buy throughout the United States.
Less than one inch thin, the new M5-583P also sports a new metal chassis with clean modern lines. It also features a “soft touch” finish on the bottom, adding a touch of sophistication and making it easy to grip and carry. Its silver aluminum surface includes a brushed hairline finish. Its backlit keyboard adds a cool subtle glow, helping to guide fingers when typing in dimly lit areas. A high-definition touch screen display with edge-to-edge glass completes its contemporary look.
In addition to the performance and power management benefits of Intel’s 4th Generation Core i5 processor, it includes 8GB of memory, a 500GB hard drive(1), and a PowerSmart long-life 4-cell Lithium Polymer Acer as10d31 notebook battery (3560mAh) providing a solid combination of performance and up to 6.5 hours of battery life(2). In addition, the PowerSmart battery can go for 1,000 cycles, lasting up to 4 years(3).
“The new Acer M5-583P-6428 provides consumers with a great package of leading technology at a very affordable price,” said Scott Ledterman, vice president, U.S. consumer sales. “It’s a compelling solution for those wanting the latest and greatest features without breaking the bank.”
Key Entertainment and Audio Features
The M5-583P-6428 includes a 15.6-inch HD(4) 10-point multi-touch display, maximizing the efficiency and fun of using Windows 8. It’s the perfect display size for watching movies or videos and viewing photos. For those who would rather connect to a big screen TV for a more cinematic experience, WiDi makes it easy to connect wirelessly, or it can be connected via an HDMI port. A high-def webcam provides high pixel density for amazing video image quality.
Acer has also included a premium sound system on the new M5. In addition to Dolby Home Theater v4, it includes four 2-watt speakers on the front of the system, which makes the audio loud and clear with minimum distortion.
In addition, the new M5 features Acer‘s audio technology package, Acer Purified.Voice. This takes voice input to the next level with a combination of hardware (dual-array mic) and software (voice recognition and audio processing). It ensures webcam/video chats, conference calls, VoIP calls and voice commands are always crystal clear. It can track and recognize the voice of the speaker wherever they are and makes sure there is no volume reduction of their voice as they move away from the notebook. It also eliminates background noise including keystrokes, so the speaker’s voice transmits clearly while voice recording or speaking, even while typing. It improves and exceeds the requirements for voice control programs.
Instant Connect Makes Computing more Convenient than ever
Featuring Acer Instant Connect, the M5-583P connects to the Internet four times faster than notebooks without it. The technology remembers previous Wi-Fi spots visited, so when they’re in range again, the M5 instantly connects to the Internet, eliminating connect wait times. In addition, while the M5 is asleep but still in range of a Wi-Fi network, Intel Smart Connect makes sure the PC is constantly updating information. Open applications, such as Facebook and Outlook emails, are constantly refreshed and will already be updated when the system is resumed from sleep.
How to adjust laptop battery to chieve optimum performance
Laptop Battery Usage Tips for Aussie Laptop Users
Adjust your laptop battery in order to achieve optimum performance instructions.
Laptop computer battery has built-in microprocessor software which can calculate the remaining capacity of a notebook battery when it is charging or discharging. Laptop Battery needs to be adjusted from time to time to ensure that the screen displays the time and percentage is correct. You should implement a full charge and discharge operation at its first use, and thereafter every 2 or 3 months once the operation as following steps:
1. First of the “Power” option setting: Right-click on a blank screen, then select “Properties” → “Screen Saver” → “Power” → “Power Schemes” → “Portable / Laptop”. Then, select “Never” for all the options of the “Battery Schemes”, and for the “Warning” options, don’t choose “Low battery alarm” or “serious shortage of battery alarm”.
2. Disconnect the Toshiba PA3290E-3AC3 Laptop AC Adapter and use your laptop until it itself shuts down. In this situation, the replacement laptop battery is fully discharged.
3. Connect the laptop power adapter and your battery should start charging. Charge until the battery is full. Repeat this charge and discharge cycle 3-4 times and your Toshiba pa3534u-1brs laptop battery pack will be conditioned to perform at full capacity. The process of charging takes at least 5 hours or more.
BattAussie provide laptop batteries of great value for Australia customers and aim to develop a large client base. Please feel free to contact us via info@battaussie.com if you have any questions. We are a manufacturer representative and distributor of laptop batteries, laptop power adapters. We buy in bulk and pass on savings to the customers. All these items are in our Aussie warehouse and provides the best service to our customers.
Note:
When your battery is adjusted to achieve optimum performance, please set your laptop computer’s power options to their default values to ensure that your notebook can send the correct warning signal. Such as: low battery alarm or alarm before sleep and so on.
Laptop Batteries and Power Tool Batteries Care Guide
Laptop Battery and Power Tool Battery Care
New Battery Packs
- Must be fully charged before use.
- Will need to be fully charged and fully discharged or “cycled” as much as five times to condition the battery to perform to its full capacity.
- Batteries work better if exercised regularly – the internal chemistry of the battery needs to be in an active state. Charging and using the tool regularly will help to achieve this.
- When charging the battery for the first time – the battery charger may indicate that charging is complete after 10 or 15 minutes. This is normal. Simply remove the battery from the charger/device, re-insert it and repeat the charging procedure.
Battery Charging
- Do not overcharge – a battery that is already fully charged should not be recharged again. This may shorten the life of the battery through over-heating or cell leakage.
- Keep your batteries cool. Charge them in the shade or indoors. After use allow batteries to cool for a while before recharging. Do not put them in the fridge as this can cause condensation to form inside the case, leading to corrosion and other damage. The recommended temperature range for charging is 10oC – 40oC, the battery will get a better charge and longevity if it is recharged within this temperature range. Continual exposure to high temperatures will affect the life of the battery.
- When the tool speed starts to decrease, it is time to recharge the battery. Do not make the tool “labor” as this can damage the internal cells. Do not discharge the Dell gd761 battery to the point where the tool can not turn or function as this can have the same damaging affect.
- Charge the battery just before a job and use it for the full charge to get longer run time. All rechargeable batteries naturally self discharge about 10% in the first 24hrs and 1% per day thereafter.
- Folllow the manufacturers instructions – many chargers have “trickle charge or maintenance charge” functions that can be helpful in maintaining good performance. Some older model chargers must be turned off after a certain time period, it is important to do this otherwise the battery will be damaged.
- It is common to damage batteries of “budget” power tools that use plug pack/transformer chargers by overcharging. One way to avoid this is to charge using the following formula. Calculate the Dell xps m2010 laptop battery capacity eg (1300mAh) x 1.4, divide the result by the output of the charger eg (400mAh) giving charge time in hours.
Power Tool Battery Storage
- Ni-Cd batteries should be stored discharged.
- Ni-MH batteries should be stored full charged.
- If possible use batteries at least every month to keep the internal chemistry active.
- A battery that has been stored for a long time may need conditioning to get it to regain full battery performance.
At the Worksite
- Avoid short-circuiting the MAKITA 8390DWAE Power Tool Battery pack with metal objects across the terminals – drill bits, nails and screws can do this easily within the tool carry case.
- Avoid moisture and water around the battery packs and chargers.
- Avoid big shocks or dropping of the battery.
- Avoid heat as much as possible. It is normal for batteries to get warm during use and charging – let them cool down prior to putting on the charger.
Fully Charge a New Dell Vostro 1310 Laptop Battery Steps
Small-business owners who would buy a consumer laptop should consider the full-featured, 13.3-inch Dell Vostro 1310 Laptop which Reasonably priced; attractive design; antiglare display; corporate-level security, including TPM; decent laptop battery life and support package focused on small business.
Dell Vostro’s six-cell laptop battery lasted a respectable 2 hours, 28 minutes on our DVD drain test, putting it in the same range as the Toshiba Tecra M8 and nearly 40 minutes ahead of the Toshiba Satellite Pro A210. It’s also longer than average for a thin-and-light, especially one with discrete graphics.
Fully Charge New Dell Vostro 1310 Laptop Battery Instructions
1. For your first use you must fully drain the Dell vostro 1310 battery until the laptop goes into hibernation.
2. Know that after that plug in your charger and allow it charge for 12 hours or depending on what the technician has told you. 12 hours is the max and you can use it while charging.
3. Charge new Dell vostro 1310 notebook battery for three times at first. After that it will take less than 2 hours to fully charge your Dell vostro 1310 battery.
4. Learn that this is recommended so that the Dell vostro 1520 replacement battery will heat up for the time allowing ions to reawaken.
5. Fully drain and fully recharge your Dell vostro 1310 replacement laptop battery pack every few months.
HP pavilion dv9700 laptop battery power management tips
Power management is critical, especially if you have a HP pavilion dv9700 laptop battery that you want to maintain in excellent working performance for as long as possible. However, does not mean that you should remove the pavilion dv9700 battery that is in your HP laptop and store it in a safe place to save the charge. In fact, leaving your laptop battery dormant for a long time only heightens the contrary effect. It hastens oxidation, reduces the surface area of the anode and cathode of cells, as a result lowers ion exchange. This degrades the laptop battery over time and can even kill it, while still in storage. Prime pavilion dv9700 battery at least once every month, to avoid such damaging effects. Other effective power management tips that you should keep in mind include:
How good or bad you use your laptops depicts how long your HP pavilion dv9700 battery will last. If you like to multitask, leave your laptop plugged in an electrical outlet, and run your laptop on battery charge even when working next to an electrical outlet, you will lower the life of your battery for Dell Latitude faster and vice versa. Avoid such mistakes for better results. Finally, optimize the power management setting of your computer. Lower the brightness of your laptop’s screen, and set it to sleep or hibernate after a period of inactivity. This way, you will lower stress and maintain your battery well.
Lapotp Scheduled Tasks
To maintain HP laptop battery Replacement for pavilion dv9700 well, the first attribute you must look at is scheduled tasks. New HP Laptop computers come with numerous stock applications that run in the background. For instance, even though the Windows Indexing Service that Ship with Windows computers helps to maintain an updated catalogue of content and files in your notebook, the service spends between 90% and 99% of CPU power, while performing the activity. This can slow down your laptop, stress installed HP dv9700 battery, and degrade it over time. Shut down the service by hacking the registry of your laptop to add more life to your HP 441425-001 laptop battery. Second, with the advent of Internet technology, worms, viruses, and hackers commonly attack HP laptop computer connected to a network. To keep such threats at bay, individuals install antivirus and spyware programs to keep their laptops in top conditions. While such applications are invaluable, running or scheduling scans when your laptop is running on battery power can lower its value over time. Remove the battery and power your laptop directly to save the charge.
Laptop Computer Accessories
Did you know the performance of your laptop accessories determines how hard your HP battery Replacement works, and thus, how long it will power your laptop optimally? If your laptop’s components draw a lot of charge or generate a lot of heat while working, the chances that they will overwork, overheat, and probably kill your battery faster than normal is high. The lower this probability, make sure that the CPU in your laptop is working well. You should also reduce hard disk spin, especially when your laptop is inactive. This saves battery charge, and keeps it going for long. Finally, make sure that you use an original HP Pavilion dv6000 Series Power Adapter to charge your laptop. A fake one can easily overheat your Latitude E6500 battery and degrade its internal components.
Ways to Stretch HP Presario CQ70 Laptop Battery Life
HP Presario CQ70 Laptop orginal 6-Cell Lithium-Ion battery will provide 2-3 hours of wireless experience, but it depends more on the apps you use. There are some easy steps you can take to extend the life of your HP Presario CQ70 Laptop Battery, including closing any windows and programs you don’t use, plugging out the external devices you’re not using, adjust the screen’s brightness, following are the best ways:
Form Healthy Laptop Battery Habits
Keep your HP Presario CQ70 Battery clean. Check the connections every once in a while and give them a wipe. Dirt, grease, and moisture can cause corrosion at the point where your battery connects to your phone. Damaged or dirty connections can inhibit your battery’s ability to send power to your phone, and cause energy to be lost during the transfer. If you can’t access the battery on your phone, you can often bring it back to the point of sale and get a complimentary check-up and cleaning. Many retailers are very receptive to this type of request.
Try not to recharge your HP presario cq70 laptop battery until it’s as low as you’re willing to go. And when you do recharge, give your battery a full burst before unplugging it. Batteries are designed for a certain number of discharges/recharges, so this will help enhance the efficiency and extend the life of your battery.
Avoid hot battery. Keep your battery cool by resting your laptop on the table instead of in your pocket or hands. Try not to leave it in the car or out in the sun. High temperatures wear down a HP 484170-001 battery power quickly.
Adjust Your HP Presario CQ70 Laptop Settings
Dim your screen to the lowest comfortable level. Exact levels will be different for every person and every circumstance, but keeping this in mind when you need a little extra battery life can make a big difference.
Set syncing to the widest intervals that you can live with. Common settings for email accounts and active applications tell your laptop to check in every 15 or 30 minutes or to sync continuously and send push notifications. The latter means that your laptop is constantly checking up on multiple applications, which sucks up a lot of power.
Disable your WiFi, Data, or Bluetooth capabilities. Some laptops, smartphones default settings have all of these enabled, but you usually only use one or two of them. Take note of which are the most appropriate for you and disable the others in your settings menu until you need them. Alternatively, you can disable this setting in certain applications, like weather apps, which are constantly accessing your data connection. That way you can maintain access, but limit the amount of battery power you’re using, and avoid blowing through your data cap.
New microbatteries will recharge 1000 times faster than current technologies
The old, bulky lithuim-ion battery has finally been innovated with enough power to boost a car battery and still recharge in seconds.
It may not be essential to running the newest version of Android, but a tiny, microbattery with that level of power and recharge rate spells success for more power-hungry equipment like electric cars, radio broadcasts, etc. But it certainly doesn’t hurt that the microbattery, developed by researchers at the University of Illinois at Urbana-Champaign, is only a few millimeters in size, which means new mobile devices with slimmer profiles, longer battery life, and less time spent tethered to an outlet.
William P. King, who led the research, wanted to make the battery smaller, so size was definitely a factor, but the research went beyond that. A drawback of current power sources is the required choice between power and energy: a HP Pavilion dv6700 Battery cell either releases energy very quickly, stores a small amount, and recharges quickly or releases energy more slowly and takes longer to charge. The latter is what powers your smartphone.The new microbatteries change that dichotomy by offering both high performance and quick-charging capabilities in one package. The new design uses a fast-charging cathode designed Paul Brian, another professor at the University. King and his team then developed a matching anode and found a way to put the two together.
So how does this kind of power translate to real-world situations? The batteries could, in theory, broadcast radio signals 30 times farther than normal and enable devices to be about 30 times smaller. More impressive, the microbatteries will recharge 1000 times faster than current technologies. King uses medical devices and implants as an example, “where the battery is an enormous brick, and it’s connected to itty-bitty electronics and tiny wires. Now the HP Presario CQ42 Laptop Battery is also tiny.”
That translates to impossibly-thin devices that won’t have to be plugged in for more than a second. At present, technology is fairly limited by our battery technology, especially when it comes to medicine. However, a tiny battery will also allow us to create tablets that can easily be held in one hand for any amount of time and laptops that won’t weigh you down. Assuming they can get the producton costs down, tiny batteries could usher in a new era of mobile tech.
Complete guide to improve your laptop and gadgets battery life
One of the most common issues that handheld devices suffer from is poor battery life. Using a few simple tips, apps and accessteories in your daily routine can help maximise the battery life. Today BattAussie battery experts shows you how to make your laptop and gadgets battery life.
Ways to improve Laptop Battery Life
Display
Similar to phones, laptop screen is also a battery power guzzler. Keep the brightness as low as possible. Also, If you also have keyboard backlighting, turn it off
External devices
Any external device plugged in the USB port constantly draws power from your laptop. Removing them after use conserves battery
Temperature
Overheating leads to the internal fans to run faster – which in turn consume more battery. Use a laptop cooler to keep the temperature at bay
Hibernate
Instead of putting your computer on standby, choose to hibernate – it saves the state of your computer and shuts down the laptop computer and saves HP pavilion dv6 battery life
Windows Power Plans
Laptops running windows have built-in power plan settings. You can choose various items such as display brightness, when to turn off the display/hard-drives and USB power. Use these to improve your laptop battery life.
BatteryCare
This software records the battery discharge cycle and also shows a detailed battery status including consumption, manufacturer, wear level etc. It also shows CPU and hard drive temperature to indicate any overheating.
External Laptop Battery Pack
With a 20,000mAh battery, this external battery pack from Anker is capable of providing one full charge to your laptop and charge your other handheld devices side by side too. It even has 3 adjustable voltage levels to suit different laptop models.
How to make Smartphones and Tablets battery life last longer
Brightness Level
Display is one of the biggest battery drainer on a phone. Instead of opting for automatic brightness in settings, manually set it to 40-50%
Connectivity
Keep the phone’s Wi-Fi, Bluetooth, GPS, NFC and 3G connectivity switched off when not required to improve battery backup
Uninstall Apps
Various apps run background processes that constantly consume battery. If you are not using a particular app, it’s better to uninstall it
Haptic Feedback
The vibrating feedback from the phone everytime the touchscreen is used might feel nice, but switching it off saves battery life
Battery Doctor
This free app is available for iOS and Android. It shows which apps are consuming more battery and the remaining battery time of the device. The android app also lets you do one touch optimisation of the battery
Carat
Carat is available for both Android as well as iOS and shows how much power each running app is consuming. After a week’s usage, it starts giving recommendations on phone usage to improve HP Elitebook 8530p Laptop Battery life
Portable Charger
Available from a number of manufacturer’s, a portable charger is the best way to charge your device on the go. We recommend picking up one with at least 6,000mAh battery so that it is good enough to charge your phone as well as tablet. Rs 999 onwards
Ways to improve Digital Camera and Camcorder battery life
LCD Display
If your camera has an optical viewfinder, use that to frame your shots instead of the LCD display. The display consumes more power than the viewfinder. If you do not have an optical viewfinder and have to use the LCD display as a viewfinder, then we recommended turning the brightness levels of the screen as low as possible
Use of Flash
Be it a point and shoot or a DSLR, the built-in flash on the camera draws power from the internal battery. Extended use of flash would result in faster draining of the camera’s battery. Try using flash as less as possible by either increasing the ISO or using an external flash to extend the battery backup from your camera battery
Memory Cards
Opt for a memory card with a fast read/write speed. With most cameras shooting at 12MP resolution and above, file size of the image has also increased – especially is you save in RAW. The longer camera takes to save the image on the memory card, the more battery it uses. Using a fast memory card takes care of this issue
Stop Reviewing
Most of us like to instantly review the clicked photo and then delete it if there is something wrong. Doing this occasionally is fine, but if you review each image and then choose whether to delete or keep it, you are eating through the battery. Instead, use a large memory card to save all the image and review them later
Spare Battery
Whatever camera you use, investing in a spare battery is always a good idea. Not only does this make switching between batteries easy, it also extends both the battery’s lifespan as discharge cycle is comparatively less compared to single battery use.
How to make Dell inspiron n5010 laptop battery last longer in Windows 8
Windows 8 is a perfect match for the new breed of touchscreen laptops thanks to its touch-friendly interface.
This means you’ll be using your mobile device for longer than ever, and needing to charge it more frequently too.
Improvements in internal design and advances in technology mean modern mobile devices are blessed with batteries that can last the length of a working day and beyond in moderate use, but if you’re still having to charge up more frequently than you’d like, Windows 8 has lots of settings and tools that can help make its power go further.
These options are easy to set up and configure, and you’ll see a big difference in how long your device lasts between charges.
Although we’re using Windows 8 here, there are similar settings available in Windows 7, Vista and XP as well, so you can use these tips to extend the life of an older laptop battery too.
How to keep Dell inspiron n5010 laptop battery live a productive life in Windows 8
1. Check your Dell inspiron n5010 battery life
Windows 8 makes it easy to keep an eye on your battery, no matter which part of the OS you’re using. The first place to look is the Lock screen, which displays your remaining charge along with the time and date. If you’re using the Start screen, you can see the battery status by flicking the right-hand side of the screen to access the Charms bar. If you’re on the desktop, you can see it in the Taskbar.
2. Adjust screen brightness
The screens of mobile devices use a lot of power, so one quick way to prolong the life of your battery is to turn the brightness level of the screen down. To do this, bring up the Charms bar and select the ‘Settings’ charm. Click or touch ‘Screen’ and a draggable bar appears, where you can quickly adjust the brightness of the screen. This is also handy if you’re working in low light levels.
3. Adjust Center settings
Windows Mobility Center is designed to make it easy to change computer settings when travelling, and is a great tool for optimising Windows 8 devices. To get to it, type Mobility into the Start screen and select ‘Settings’. Click on ‘Windows Mobility Center’ to open up the program. From here you can change a number of settings that will help prolong your dell laptop battery life.
4. Mute the volume
It might not be the most obvious thing to do, but you can make a big difference to the battery life of your laptop or tablet if you lower – or, even better, completely mute – the volume of its speakers when you’re not listening to music or watching a video. This means that precious battery power won’t be used up powering the speaker and pumping out sounds when you don’t need it to.
5. Change the power settings
The Windows Mobility Center lets you change your Dell inspiron laptop’s power settings quickly and easily. The default choices are ‘Balanced’, ‘Power saver’ and ‘High performance’. ‘Power saver’ tweaks the settings for a longer Dell inspiron 1526 laptop battery life, but at a slight price when it comes to your laptop’s performance. The ‘Balanced’ plan lowers performance only when you won’t notice the difference.
6. Advanced power settings
You can tweak the power settings by going to the Start screen and typing in power. Select ‘Settings’ and then ‘Choose a power plan’. Select the power plan you want to edit, then select ‘Change plan settings’. You can then alter various settings, such as how long it takes for the screen to dim when not in use, or how long it takes for the laptop to go to sleep.
7. Create your own power plan
From the Power Options window you opened in step 6, you can also create a new power plan to suit your specific needs. Select ‘Create a power plan’ on the left-hand side of the window, then select a power plan to use as the basis of your new one. Give your new plan a name, then select ‘Next’. Now you can adjust the settings to your liking. Once you’ve finished, click or tap ‘Create’.
8. More advanced settings
You can access even more advanced power settings if you’re confident drilling down further into Windows 8. From the Power Options window, click or tap ‘Change plan settings’ next to a plan, then select ‘Change advanced power settings’. From here you can change settings that determine when to turn off your hard drive, how USB ports are used and much more.
9. Turn off wireless
If you’re using your device away from a wireless network, you can turn Wi-Fi off to save your battery power – there’s no point in having your laptop hunt for a network that isn’t there. Bring up the Charms bar in Windows 8 by swiping from the right-hand side of the screen. Now click ‘Settings’, then ‘Change PC settings’. Click or tap ‘Wireless’ and then change ‘Wi-Fi’ to ‘Off’.
10. Enjoy a better laptop battery life
Now that you’ve followed these steps, you should see a noticeable improvement in your Dell inspiron n5010 battery life. You don’t need to do each step to see a benefit, and be sensible with them; having your Wi-Fi switched off is inconvenient when you want to go online, and a pitch-black screen will mean fewer charges, but will lead to eye strain. Find the right balance and you’ll be happy.