How To Choose the Perfect Powerbank?

How To Choose the Perfect Power Bank?

For people who are on the move constantly, power banks are an important accessory to have in their gadget kitty. If you’re traveling and you are away from a power source, a dedicated battery pack comes in handy to juice up your smartphone, laptop, camera, and other electronic gadgets.
But before you purchase a power bank you need to know certain important things. The things that will make or break your buying decision. These buying tips will enhance your purchase experience to a different level and will help you choose the best power bank. So without any further ado, let’s look at the top X things to consider before buying a power bank.
1. Battery Capacity and Power Output
Though it is not the be all and end all, when buying a power bank the first factor to look for is the advertised battery capacity. Confused? Let me explain.
Power banks capacity varies from product to product depending on the number of cells in the power bank. It may start from as low as 2,000 mAh to as high as 30,000 mAh.
Based on your use case, you have to choose the desired battery capacity. If you just need a pocket-sized power bank to juice up your smartphone or smartwatch once, a smaller capacity battery pack will be enough.
But if you are traveling a lot and you need to charge your laptop (Laptop should have USB-C port) and smartphone at least twice, a bigger battery capacity is advised. Ideally, a power bank having battery capacity between 10,000 and 20,000 mAh will be perfect for most people.
The power input and output of the power bank is also very important. A higher power output means that your device will charge at a faster speed and higher input power increases the charging speed of power bank itself.
Normally the power output found in battery packs is either up to 12 Watts (5V, 2.4A or 5V, 2.1 A, Normal charging) or 18 Watts (9 V, 2 A, Fast charging). For faster charging of your device, an output port having 9V, 2A rating is advised.
A higher input power means that the power bank can quickly charge itself up when it is plugged to a power source. Here also check for a 9V, 2A rated input port.  
2. Actual Battery Capacity, Conversion Rate, and Effective Battery Output
One of the reasons why I said advertised battery capacity is not the be all and end all is because of conversion rate and effective battery output. Even though a power bank may have an advertised battery capacity of 10,000 mAh, you must have noticed that you were not able to charge your 3,000 mAh smartphone battery even thrice.
This is where the concept of conversion rate and effective battery capacity comes into the picture.
Batteries inside the power banks are usually rated at 3.7V. The battery capacity listed by the manufacturer will be based on this rating. That is, if it is supplying power at 3.7V to a device it will be having the advertised battery capacity.
But the USB output from the power bank is rated at 5V or 9V. The actual capacity of the power bank will be based on this rating. There is an equation as well to calculate the actual battery capacity.
Actual Battery Capacity = (3.7 x Advertised Battery Capacity / 5)
There is also a problem of power loss in transmission and power leak over a period of time from the power bank. That’s where conversion rate comes into the picture.
Let’s clarify your confusion through an example.
Suppose a manufacturer sells a power bank with an advertised capacity of 10,000 mAh and conversion rate of 90 % (this is advertised by some brands, but some brands don’t reveal this number).
The actual capacity of that power bank if the power is supplied to a smartphone via 5V output port will be ( 3.7 x 10000 /5 ) = 7400 mAh.
With the conversion rate of 90%, the effective battery output will be ( 90% of 7400 mAh) = 6660 mAh.
That’s 66% of the advertised battery capacity! Quite a letdown, isn’t it?
The bigger and better brands have found a workaround to provide the maximum effective output at faster-charging speed through the innovative implementation of fast charging technologies.
In any case, look at user reviews and expert recommendations on power bank before you buy them so that you don’t get fooled by the battery capacity advertised.
3. Number and Type of Output Ports Available
A power bank may be used to charge multiple devices simultaneously or you may want to charge at a different Ampere according to the device specification.
Some power bank has only 1 output port under 15W (5V, 2.1A or 5V, 2.4A) and some have 2 or 3 ports at 12W or 18W (9V, 2A or 6V, 1.5A).
So before buying your power bank make sure that it has enough output ports satisfying your needs. I would prefer at least 2 output ports.
Most of the power banks in India has only micro USB input ports available. As the industry is moving towards USB Type C ports, it is future proof to go for a power bank having USB-C port for power input and output.
4. Safety, Design and Build Quality
Safety, design and build quality of power banks are also an important aspect in enhancing the user experience of a power bank.
As batteries are flammable objects and there is a chance of explosion, it is important that battery packs like power banks have followed a rigorous safety standard. Notable brands have different layers of circuit protection to mitigate the risks.
In short, safety should be an important factor in your buying decision.
When it comes to the design aspects, no one wants to buy an ugly looking power bank. As you will be using it on the go for charging, a good design for your power bank add an extra layer beauty into it and compels you to take it along in your journey.
Make sure the design of the power bank is suitable to fit into your pocket or backpack. Good design enhances the overall experience of handling a power bank.
The power bank should have a clearly visible battery level indicator to calculate the leftover battery. It should have a simple power button and other control buttons as well.
Another key aspect to check is whether the battery cells are Lithium-ion or Lithium Polymer. According to Android Authority writer Matthew Sabatini, Lithium-ion battery and Lithium-Polymer battery do not differ much in performance.
But Lithium-Polymer batteries are very lightweight and have improved safety. So they are more durable against overheating and overcharging.
5. Ease of Portability
The sole purpose of buying a power bank is to charge your device when you are traveling or when you’re away from a charging point for some time.
Hence portability of your power bank is paramount. An ideal power bank should be lightweight. If you need a higher battery capacity, the weight can be a little bigger, but for a 10-20,000 mAh power bank, the ideal weight is just around 200 gram.
A bulky power bank will be difficult to carry on the go in your backpack or pocket. It should fit nicely in your hand as well.
Bottom Line

Power banks have become an unavoidable gadget in our everyday life. With shrinking smartphone battery life and increased use of different gadgets, we need a constant power supply even when we are on the go. That’s where power banks come into the picture.
A good power bank should have adequate battery capacity, both in paper and in reality. It should also have fast charging features to quickly juice up our device when we are on the go. The number of ports, portability, safety and build quality are all important to decide the best power bank for you.

We hope this article must have cleared all your doubts you had before buying a power bank. Whether yes or no, we will be glad to hear your feedback. With that, let’s wind up this buying guide on power banks.

Visit https://bettershark.com for the list of best gadgets you can buy.

How to Create a Persistent Bootable Kali Linux USB

How to Create a Persistent Bootable Kali Linux USB

Kali Linux, being one of the most useful pentester’s OS is easy to install and ready for use but most of the people on this planet want an easy to use machine so they either install Windows on their PC/Laptop or they use a Macintosh. No one wants to use his/her’s expensive PC/Laptop just for a Kali Linux OS so here is a method to easily create a bootable persistent Kali Linux USB.

What is Persistence?
Persistence is the space on your USB storage device that can be used to store data, so that the data is still there after a reboot, that means you can carry a full-fledged customized operating system in your cute and compact USB

Things Needed
  1. A USB Storage Device (i.e., Pendrive/Memory Card)
  2. Universal USB Installer
  3. Kali Linux ISO Image
  4. Mini Tool Partition Wizard

In the video embedded below I have shown you how to create a Bootable Kali Linux USB, and for that you will need a Kali Linux ISO image which can easily be downloaded from here and Universal USB Installer which you can download by clicking here



Now in the following video I have shown you how to Create a persistent storage in your Bootable Kali Linux OS using the Mini Tool Partition Wizard so to download it click here.


How to Create a Persistent Bootable Kali Linux USB?
So to create a Bootable Kali Linux USB use the Universal USB Installer to flash the Kali Linux ISO to your USB storage device and after that use the Mini tool Partition wizard to create an EXT4 Primary partition in your USB storage device and label it as persistence
Now that you have done all that restart your PC and boot it up from the Bootable Kali Linux USB and choose the Live USB Persistence option in the Kali Linux’s Grand Bootloader (Kali Linux Boot Menu), and wait for Kali Linux to boot up and after that when you see a storage device icon named as 
persistence on your Kali Linux Desktop, open up the terminal and type the following commands.
Commands Used in the Terminal to create a persistence configuration file are as follows:

  1. fdisk -l
  2. mkdir -p /mnt/AnyName
  3. mount /dev/sdb2 /mnt/AnyName
  4. echo “/ union” > /mnt/AnyName/persistence.conf
  5. umount /dev/sdb2
And after that restart your PC and again boot it up from the Bootable Kali Linux USB and make some changes in the default Kali Linux desktop (For example, make some folders and change the desktop background) and again restart it and again boot it up from the Bootable Kali Linux USB and notice that if everything that you changed earlier is not changed by the default one or not, and if it is not changed then you have successfully created a Persistent Bootable Kali Linux USB. 

Android 8.0 Oreo | What’s New?

Android Version 8.0 Oreo

Android Version 8.0 Oreo
Android Oreo 8.0 is more-Smarter, more-faster, more-Powerful and much more-Sweeter than ever. The world’s favorite cookie is your new favorite Android release.




What’s new in Android 8.0

Here is a detailed list of features that will be present in Android’s version (8.0) Oreo

Active NotificationsActive Notifications: Android V8.0 Oreo comes with Moto-X styled Active notifications which help the device in saving battery and a perfect minimal design is available for users to interact with.

App Specific Notifications Android 8.0

App Specific Notifications: Oreo comes with Notification Dots to allow the users to easily differentiate between the type of notifications and it also helps to group them. App specific notifications work like app shortcuts when clicked on the dots available on the apps with notifications.
(App Shortcuts: App Shortcuts are made more efficient.)
Picture in Picture
Picture in Picture: Multitasking is one of the major reason why people use smartphones and Android being smartest of them all has brought Picture-in-Picture to let the users do two or more things at once. Picture in Picture allows you to see two apps at once, it works same as if you are watching a youtube video on your smartphone while seeking other channels, however Non-YouTube Red subscribers cannot use youtube as a Picture in Picture app, so simply use Google Chrome or any other third-party browser to use YouTube in Picture in Picture.


Built in AI for Selecting text that matters
Smart Selective Text: In this latest version of Android you can easily copy some important things without wasting your time in dragging the pointers over the text. You can easily select the text which is necessary like addresses, phone numbers, names, etc. And this is possible just because of the use of some Artificial Intelligence working behind the whole system.

Pecking out an email address and password, or a shipping and billing address, is a real pain on a mobile keyboard.
Autofill: After taking necessary permissions from the user Autofill remembers your logins to remove the hassle of handling multiple accounts, this can help you to log-in faster.
Autofill works like a password manager and is much more secure than any third-party password manager.

A refreshing new wallpaper dailyNew Wallpaper Picker: New Wallpaper picker is the same Wallpaper app that comes pre-installed with Pixel devices and is also available on the Play Store for free.

Settings got revampedSettings got revamped: Android Settings got a better, threaded look for ease of access and usability, settings are now available at your fingertips, there also comes a smart storage option that auto-cleans your storage in a certain period of time after taking a backup of it on the cloud, Android Auto and Android VR support got better and Battery optimization got better which includes 2x faster boot up time (as measured on Google Pixel) and Oreo also helps in minimizing background app activity to use fewer resources and thus making Android experience better than before.

60 new emoji support in Android Oreo
New emoji support: Android Oreo comes with 60 new emoji support to let the user express himself/herself in a better way. Emoji is the best way for a user to either skip a conversation or to reply without thinking much.

Instant Android Apps
Instant Apps: Instant apps are the new kind of native Android apps that do not need any kind of installation and load instantly directly from the browser, this way the users who do not want to bulk up their phones with apps simply use the instant app of that particular website/portal and get the flagship Android experience from any URL—including search, social media, messaging, and other deep links—without needing to install your app first.
Instant apps increase the reach of many website/portals and thus making a bond with their audience more and more stronger.

How to Fill Colors in your Black and White images?

How to Fill Colors in your Black and White images?
“A good snapshot keeps a moment from running away.”
Eudora Welty

How to Colorize a Black and White photograph?
Photographs cherish your memories and make you relive those moments and remember your loved ones, but due to some advanced technology available back in 90’s we were not able to capture those lovely colorful moments, so the photographs captured back then were all black and white, but today when algorithm plays a big part in our daily use of Computers we can now colorize our old style photographic memories.

Algorithmia‘s : Colorize Photos page deals with black and white pictures and by using its Deep Learning techniques it automatically turns it into a colorful masterpiece.

The colorize photos algorithm, named as a ‘micro service’ but plays a big role in day to day life when either you use it for filling colors in your old memories or un-doing the B/W filter you accidentally used while capturing a perfect photo for your profile picture.

How to do it?

• Visit Algorithmia’s Colorize Photos page by clicking here
• Now either paste an online location (i.e., URL) for your image or click on the 📤 Upload button and upload a black and white picture.
• Now the algorithm will deal with the black and white picture and you may see a message on screen ‘Colorizing Photo
• Now a comparison will be shown on the screen which can be downloaded by clicking on the Download the Comparison button below the image
• Now download the colorized image by clicking on ‘Download Colorized Image” button below the image.


Credits

Everything you need to know about Everything | Locate files and folders by name instantly

EVERYTHING VOIDTOOLS

If you are looking for a software which can provide you search results instantly rather waiting for your files to load up and located by the default search engine embedded with Windows operating system itself, then you just hitted up the right article.

What is Everything?

Everything” is search engine application made for Windows, that locates files and folders by filename instantly.
Unlike Windows search “Everything” initially, displays every file and folder on your computer (hence the name “Everything”).
You type in a search filter to limit what files and folders are displayed.

How long will it take to index your files and folder?

“Everything” indexes only file and folder names and generally takes a few seconds to build its database!
A fresh install of Windows 10 (i.e., about 120,000 files) may take about 1 second to index.
So 1,000,000 files may take about 1 minute or less depending on the processor and other conditions.

Personal Experience
Everything is helpful for everyone, it saves time!
After using the software for a month I can say that the small piece of code changed the way I was thinking about machines and the processes, just the simplest design and just the smallest code can change the way you think. That old Windows default search thing was, is and maybe will be a crap just because of the time they take in showing up the results, and then I found Everything Search Engine and the simple yet powerful user interface made me stick to the small software.
Everything being an instant search engine tool can be a perfect solution for photographers who keep some pictures of their customers so that he/she can print the same photograph later, or Everything can be useful for those who shoot a lot of stock footage(s) and use them later.

Something more about Everything
Everything being a reliable and a useful software also doesn’t charge people for removing advertisements from the unpaid version or so on, it rather provides every powerful feature to everyone.
So if you want to donate the developer (David Carpenter) simply visit the donate page of the official voidtools website by clicking here.

To Download Everything (Search Engine Tool by voidtools)

Visit:

VoidTools | Downloads

What are Download Managers? and How do they work?

What are Download Managers and How do they Work?

What are Download Managers

Download Managers are the programs which allows the user to sometimes accelerate the download speed by downloading from multiple sources at once, prioritizing downloads and selecting the best possible source for downloading. These days most of the web browsers come along with a download manager but a dedicated program to do a task is a totally different thing (think of making a cricket ball with clay, you would never hit a boundary with that) that’s how download managers work, inbuilt download managers do not prioritize perfectly, sometimes when the internet connection is not strong enough for a user to download the file at once or if the file is large enough for a user to handle it with browser’s inbuilt download manager that’s when download managers look like a creamy pie.

How Do they work?

Download Managers accelerate the download speed by downloading the file in a split manner (i.e., the file is downloaded in many segments). Have you ever tried to download a large file via your browsers’ internal download manager, and if ever at that time your internet connection weakened up and the download got cancel after wasting your data? That’s when Download Accelerators (Download Managers) do their job. 

An awesome Download Manager

Folx – Downloader for Mac


Folx

Folx is a download manager combined with torrent client for mac to add files to download you can use either of the following options quick add new task window this will also allow you to assign tags to the downloaded content split downloads and to threads etc. Browser plugin the application supports all popular web browsers for Mac, download ‘Resume’ feature comes handy when your internet connection is not stable or the website you need is inaccessible this feature enables you to resume your download right where you left off Folx, it has all the basic functionality to download and upload torrent files in a simple and convenient way, and the true Mac design the software is built in is truly amazing. The pro version of folks is available for a reasonable fee of $19.95. With Folx Pro you can schedule your downloads according to your convenience, split the downloads in up to 10 threads, to download faster use smart speed control to optimize the download speed automatically add downloaded music and videos to iTunes’ playlists search through extensive list of torrent trackers without exiting the application. To be honest we also tried the software and we found that the torrent client is really appreciable and powerful so we personally recommend this software to all the Mac users.

Download .mp3 files with ease

You can easily download YouTube videos and if you want only the audio you can easily do that too.

Scheduling your downloads

Schedule your downloads with Folx

Busy with work? You can simply schedule your downloads so that you can sit back relax and be busy with your work and Folx will automatically complete all the scheduled downloads on time.

Manage downloads with Tags

Manage Downloads with Folx Tags

Managing downloads is a tough job but with Folx you can manage all your downloads by separating them with tags. Tags help the users to distinguish between different file types for example if you have downloaded a bulk of stock images and a video file, but to find that video file in that bulk might sound tough to you but with Folx you can just switch to the Video tag and find your file easily.

To download Folx you can Click Here

How to Delete Downloaded Xposed Framework Module apk(s) [Completely]

How to Delete Downloaded Xposed Framework Module apk(s) [Completely]

People out there who have root access to their smartphones and have Xposed framework installed on their phone install many Xposed modules on their phone just by downloading the apk from the download section of the Xposed Installer app but when they don’t like that module they simply uninstall the app, but here comes the sad part that the apk that was downloaded to be installed in the system is not deleted even after you uninstall and restart your device! and if the downloaded module is of a very large size it reserves some specific amount of space in the storage so to deal with that follow this simple video and free up some space for your personal data.

Steps to Delete the apk(s) which are downloaded by Xposed Framework to delete the 
  1. Download ES File Manager from Play Store.
  2. Right swipe and you will find an option named as Local, tap on it and now tap on the sub-option named as Device.
  3. Now scroll down a bit and you can see a folder named as data, simply tap on it.
  4. Now after scrolling you may find a folder named as com.android.providers.downloads, open it up.
  5. Now the folder which is named as cache will be containing all the apk(s) which are downloaded from the download section of the Xposed Framework, you can simply delete the cache folder or if you want you can also take a backup of the module by just copying the apk of the module to your phone storage or external storage, or if you want to delete a single module’s apk you can do that too by selecting and deleting the apk which is inside that cache folder.

Location where Downloaded Xposed Modules apk(s) are stored:
device/data/data/com.android.providers.downloads/cache

Download ES File Manager:

How to activate YouTube’s hidden Dark Mode

YouTube’s Dark Mode

YouTube Hidden Dark Mode

Dark mode turns the light surfaces of the page dark, creating an experience ideal for the users who use YouTube till very late hours of the night or in a dark room like that of mine.

Watching YouTube is now a habit for me, creating videos, learning and motivating myself all at one place. Though being a human being we get bored of a thing to which we regularly watch, so here is a hidden YouTube feature that will allow you to tweak with the original YouTube user interface a bit.

Requirements for activating YouTube’s dark mode are as follows:

  • Make sure you have the latest version of Google Chrome (i.e., version 57 and above)
  • Open the Inspect window by hitting Ctrl+Shift+I on Windows, or Option+Command+I on Mac
  • Select the Console tab
  • Paste the following text:  

    and hit enter.
  • Close the Inspect Window and refresh your browser, and dark mode can now be found in the main settings menu in the top right. Turn it on and enjoy a new dark experience!


The feature is not yet officially announced by YouTube but it can be seen after a number of changes.

You can watch a GiF image below and by following the steps in the GiF you can activate Dark Mode in YouTube.



Also Read Top 10 Most Weird Websites of 2017 Which Makes No Sense

How to Create a Vector Avatar in Adobe Illustrator | Basic Tools Used in Adobe Illustrator

How to Create a Vector Avatar in Adobe Illustrator | Basic Tools Used in Adobe Illustrator

Adobe Illustrator is a vector graphics editor developed and marketed by Adobe Systems.

Illustrator is a program with help of which you can create vector drawings. It is used to draw illustrations, cartoon-characters, all type of diagrams, all type of charts, and some awesome infinitely scalable logos. It is not at all like bitmap photos that store information in a dot-grid, Illustrator uses mathematical equations for drawing out shapes. Vector graphics are scalable without the loss of resolution.
Illustrator 
is an industry-standard vector graphics software that is used worldwide by designers who want to create digital graphics and typography for all kinds of media: print, web, interactive, video, and mobile etc.
Illustrator is part of Creative Cloud, which means you can access all your assets right inside the app and quickly turn a blank page into a beautiful piece of art. With Adobe CreativeSync, everything is connected with your desktop and mobile apps.

What is a Vector Illustration?
Vector art is created using vector illustration software programs, such as Adobe Illustrator or Corel Draw. These programs use mathematic equations and geometric primitives (points, lines, and shapes) to create art that is clean, camera ready, and can be scaled infinitely, without any loss of quality or fidelity.

What is a Vector file?

An EPS file is a vector file of a graphic, text or illustration. … Best use = master logo files and graphics and print designs. AI. An AI file is a proprietary, vector file type created by Adobe that can only be created or edited with Adobe Illustrator.

Basic Tools Used in Adobe Illustrator


  1. The Selection tool (V): Selects entire objects.
  2. The Pen tool (P): Draws straight and curved lines to create objects.
  3. The Type tool (T)Creates individual type and type containers and lets you enter and edit type
  4. The Paintbrush tool (B): Draws freehand and calligraphic lines, as well as art, patterns, and bristle brush strokes on paths.
  5. The Gradient tool (G): Adjusts the beginning and ending points and angle of gradients within objects, or applies a gradient to objects.
  6. The Eyedropper tool (I):  Samples and applies color, type, and appearance attributes, including effects, from objects.
  7. The Live Paint Selection tool (Shift+L): Selects faces and edges within Live Paint groups.
  8. The Hand tool (H): Moves the Illustrator artboard within the illustration window.
To know more about Adobe Illustrator Tools, visit Illustrator tool galleries

How to Create a Vector Avatar in Adobe Illustrator

To Create a Vector Avatar in Adobe Illustrator the very first thing you need is ‘Adobe Illustrator’. I know it sounds silly but without Illustrator you can’t create a vector avatar in illustrator, so now let’s keeping it less complicated and easy follow the steps:

  • Open up Adobe Illustrator
    Adobe Illustrator

  • Drag and drop the sample image. (A sample image is that image of which you want the avatar for i.e, a sample image will be needed by the person who illustrates to create trace over it, for example if you want to create a vector avatar of yourself you need to trace all the details in your photograph by the use of basic illustration tools).
    Sample Image Layer | Adobe Illustrator

  • Create a new layer over the sample image layer.
    New Layer over the sample image layer | Adobe Illustrator

  • Now by the use of Pen Tool start outlining larger areas and after you have covered all the part to be illustrated simply change the color of the illustration to the skin tone or whatever the thing be that is being illustrated by you.
    The Pen Tool | Illustrator

  • Now again use the pen tool to fill up the details and to create a good looking illustration try showing up some shadows (You can give details using shadows which will give the viewer the feel of where the light is coming from and shadows increase the depth of the illustration that you are creating).
  • Use the color panel to toggle between fill and stroke and to gradient too! You can also chose the skin tone by clicking in the color that is pre-selected.
    Color Panel | Adobe Illustrator

Watch How to Create a Vector Avatar in Adobe Illustrator [Full Tutorial] here:

How to find Wi-Fi password of all past Network Connections using CMD

How to find Wi-Fi password of all Connected Networks using CMD

In this tutorial, I’ll be showing you how easy it is to find a saved WiFi network’s password using few CMD commands. These commands work even when you are not connected to internet or you are not connected to any WiFi network.
You may or may not be using several Wi-Fi connections through your desktop or laptop. Sometimes, a situation arises, when you may forget the connected Wifi network’s password, and you want to connect your mobile phone or tablet to the same Wi-Fi network just to use the internet but the network’s password your laptop is connected to is hidden deep inside the machine.


Here is a Trick to Find Passwords of All Connected Wi-Fi Networks Using CMD

  • Open Command Prompt and run it as administrator
    Open CMD as administrator

  • Now we want to know about all the profiles stored in our computer so type the following command in CMD

netsh wlan show profile  

This Command will list out all the Wi-Fi profiles you have ever connected to in past.

netsh wlan show profile

(In this above picture I have intentionally blurred some of the Wi-Fi networks)

  • Now type the following command to see the password of any Wi-Fi network

netsh wlan show profile Wi-Fi_Name key=clear

Here instead of typing the text in red (i.e., Wi-Fi_Name) you have to type the name of that Wi-Fi network to which you want to know the password of.

For Example in the picture below I have used Techetarian instead of Wi-Fi_Name in the command to reveal the password of my Wi-Fi network (i.e., Techetarian).

netsh wlan show profile Techetarian key=clear

Under Security settings you will see the Key Content and voila that is the password which was saved deep inside your computer.

Watch How to find Saved Wi Fi passwords using CMD here