Solar Power – How To Effectively Utilized Solar Energy

By   February 1, 2016

Many individuals and businesses are changing over to renewable solar energy. As people become more aware of the damage humans have done to our environment, they are searching for more ways to protect it when using energy. The tips you need to start using solar power lay below. Your solar power system’s ability to produce power depends on several factors, such as the efficiency of the panels and how many you purchase. A consultant can help you figure out just how much power you need as well as what panels are best suited to your needs. Higher-efficiency panels are often your best bet cost-wise.

When beginning to use solar energy, start small. Choose a few lights to put in your front yard until you realize the benefits of solar energy. Solar powered garden lights can be found in almost any store that sells ordinary garden lights. Installation is as simple as placing them in the ground along your walkway.
power energy

Solar Energy System

If you are prepare to invest for the long haul, solar energy is a ideal method to save money. The initial costs of a solar energy system for your home is expensive. If you are planning on moving, then you might want to hold out on purchasing the solar energy system until you are in a more permanent home.
solar power bank
Search for grants and rebates that can help defray some of the installation expenses. It can be expensive to install and run your solar energy system, but there’s help out there. Look into state and federal grant opportunities intended to encourage the use of renewable energy sources. They can significantly reduce the costs. Under certain circumstances, you may be eligible for tax credits. To make PV systems even more affordable, several states offer financial incentives through solar rebates and other programs. Some utilities have net metering programs, which further enhance the economics of PV.
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Lithium Polymer Batteries in Power Banks

By   January 13, 2016

If you want to make a DIY battery charger or more commonly known as power banks, you will surely need a battery pack. There are many type of batteries such as venerable AA or 9V cell. This batteries are great for making into larger multi battery packs. They can carry plenty of charge and also at cheap cost. But if you want your batteries to also be rechargeable and want to save money for longer term, you will need rechargeable lithium polymer batteries.

What is Lithium-Polymer Batteries

Lithium Polymer batteries are the latest type of battery which are now commonly used in many consumer electronic devices. The latest device such as power banks also use power bank to store extra charge. Lithium batteries have been gaining in popularity in the radio control industry over the last few years, and are now the most popular choice for anyone looking for long run times and high power.

Lithium polymer batteries offer more benefits than other alkaline or common Nickel Metal Hydride batteries and Nickel Cadmium batteries.

  • Lithium polymer batteries are much lighter weight, and can be made in almost any size or shape.
  • Lithium polymer batteries offer much higher capacities, allowing them to hold much more power.
  • Lithium polymer batteries offer much higher discharge rates, meaning they pack more punch

Lithium Ion batteries tend to be rectangular or sometimes cylindrical. They are hard shelled with a robust casing. Lithium batteries are more heavier and come with larger capacity compare to other battery types. They are also sturdy and not easy to puncture. These batteries are often used in top power banks in India and laptops.

Why Lithium Polymer Batteries in Power Banks

Lithium Polymer batteries offer a wide array of benefits. But each user must decide if the benefits outweigh the drawbacks. For more and more people, they do. In my personal opinion, there is nothing to fear from LiPo batteries, so long as you follow the rules and treat the batteries with the respect they deserve.
Lithium Polymer Battery in Power Bank
These benefits are important in any RC model, but for airplanes and helicopters they are the reason electric flight has become so popular. Face it, electric cars and boats have been around for decades, it wasn’t till LiPo battery technology arrived on the scene, that electric planes and helicopters started showing up and are now surpassing
nitro power in terms of performance.

Lithium Polymer Battery Features

High Energy Density: For their weight, Lithium Polymer batteries are capable of storing a proportionately high amount of energy compared to older technologies such as those found in NiCd and NiMH batteries. In many cases, they offer over 4 times the energy capacity for the weight.

Cell equalization: Because a Lithium battery cannot be overcharged, there is no natural mechanism for cell equalization. Therefore, an alternative method must be employed.
Lithium Batteries
Flat Voltage Curve: Lithium Polymer cells are fully charged at 4.2 volts and are considered fully
discharged at 3.0 volts. This allows for a relatively flat voltage discharge curve, providing solid performance throughout the discharge cycle.

High Capacity: Lithium Polymer cells with reduced capacity or high internal impedance tend to have large voltage swings when charging and discharging. For HEV applications, it is necessary to cell balance lithium chemistry because of this over voltage potential.

No Memory Effect: Lithium Polymer cells do not develop a memory effect from being only partially discharged and then charged again (such as that experienced by NiCd cells). The cells may be partially charged and discharged without damaging their performance so long as they are kept within their normal operating voltage parameters.

Differences in Lithium Ion and Lithium Polymer Batteries

Many people get confused between Lithium-Ion and Lithium-Polymer batteries. Though they have many similar features, but they also differ in key points. Lithium-Ion and Lithium-Polymer batteries have essentially the same chemical make up and are cared for in the same way; the differences are in how the cells are packaged and the type of electrolyte that is used.

Lithium-Ion

power banks in IndiaThese batteries use an organic liquid solvent as the electrolyte. This electrolyte is responsible for the ion exchange between the positive anode and negative cathode just like any batteries. This organic solvent based electrolyte is highly flammable and the reason why Lithium-Ion batteries are more volatile and can catch fire or explode if mistreated.They are also usually encased in a hard metal can adding weight and not allowing many different options as far as shape and size.

Lithium Polymer

A true Lithium Polymer battery doesn’t use a liquid electrolyte but instead uses a dry electrolyte polymer that resembles a thin plastic film. This film is sandwiched between the positive anode and negative cathode of the battery allowing for ion exchange thus the name lithium polymer. This method allows for a very thin and wide range of shapes and sizes of cells.

Lithium Polymer Battery Specifications

LithiumPolymerBatteryAs we discussed above about the similarity and difference between the Lithium Ion and Lithium Polymer batteries, You should always treat them somewhat similarly and consider them two different versions of the same kind of battery. Below we will discuss its specification.

Voltage
Depending upon the design of your lithium polymer battery, you may find them in different nominal voltages. For example, most lithium polymer batteries are in the range of 3.7V to 4.2V batteries. What this means is that the maximum voltage of the cell is 4.2V and that the average voltage is 3.7V. As you use the Lithium Polymer batter, the voltage will get lowe and lower, until the maximum voltage becomes 3.1 V.

Capacity
10000 mAh lithium polymer power bank
The capacity of a Lithium polymer battery is basically a measure of how much power the battery can hold. Think of it as the size of your fuel tank. The unit of measure here is milliamp hours (mAh). This is saying how much drain can be put on the battery to discharge it in one hour. The capacity of the battery suppose is 5000mAh. This means that a load of 5000mAh (or 5A) would drain the battery completely in one hour. We use this information on charging as well, because it works in the opposite way as well. If we charge the above battery at 5 Amps, it will be completely charged in about an hour. Physics is a bit fickle, and there is energy lost along the way, so it won’t be an hour on the dot, but it’s a good ballpark time.

How To Prolong The Life of Your Lithium Polymer Batteries

Good quality cells like ours, although cost more in initially will easily out perform and outlast the cheaper cells and therefore cost you less in the long term. Good quality cells are also safer in operation then the cheaper far east cells. As with all things in life, you get what you pay for.

  • Purchase good quality battery packs. Cheap far east cells are a bad investment with regards to life, performance and safety.
  • Do not charge your lithium polymer batteries above their max safe voltage.
  • Do not discharge your lithium polymer batteries below their safe minimum voltage
  • Purchase a good quality charger designed specifically for charging Lithium Polymer cells. Make sure the charger has a display that will show the amount of energy that is put back into your packs in terms of “mAh” and one that shows the voltage of the individual cells being charged. This is essential to monitoring and therefore adapting your use and charging of your batteries.
  • Lithium polymer batteries offer plenty of power and run time for us radio control enthusiasts. But that power and run time comes at a price. These batteries are capable of catching fire if not used properly
  • Purchase a digital voltmeter. We can supply these for as little as £6.99 and is an essential tool for checking your
    battery packs
  • For the longest life of the batteries, Lithium batteries should be stored at room temperature at 3.8V per cell. Most modern computerize d chargers have a LiPo Storage function that will either charge the batteries up to that voltage, or discharge them down to that voltage, whichever is necessary.

CONCLUSIONS

Electric vehicle applications can benefit from cell-balancing devices, especially for lithium-based battery chemistries. Since battery pack charging is limited by any one single cell reaching its end-of-charge voltage (4.1 V to 4.3 V), it is useful to control high voltage cells until the lower voltage cells catch up. This way, each cell can be charged to its end-of-charge voltage.

New-LI-POLYMER-Battery-7.4V-1200mAh-10C-0[1]

So there you have it now you know most of what you need to know about Lithium Polymer batteries. I make no claims that this article teaches you everything there is to know about LiPos, but hopefully it helps give you some insight into how these batteries work. LiPo batteries have the potential to overtake NiMH batteries in general use in the next few years, quicker than any battery in history. It is certainly an exciting time for the hobby, and things are changing on a frequent basis. Just remember to have fun, and ask questions! The only dumb question is the one you don’t ask!

Choosing The Right Tool For The Job You Want To Do in a Perfect Way

By   December 30, 2015

As an avid home renovator, improve and all round handy man, I’ve collated a pretty extensive set of tools. With tools for specific jobs hung all over my garage wall, I can be a little spoil for choice when it comes to selecting which one is going to suit the task in mind best. Well away from all the hammers, nails, screwdrivers, wrenches, routers, saws and belt sanders, you’ll find my favorite tool in my pocket. I’m talking about my folding knife. Small, easy to access, simple to use and capable of fulfilling a hell of a lot of round the house functions, my folding knife is my go to tool for the odd jobs that crop up. Where I may have improvised on occasion using the handle to hammer in the odd nail, generally speaking, the folding knife is a very versatile tool, and one that every ‘do it yourself-er’ should have in their arsenal.

However, not all folding knives are up to the task, so it’s important to purchase one that best suits your needs. I’ll look to bring you a short summary and my personal opinion in this short blog post. In short, if you think there is just one type of folding knife then you are unfortunately mistaken. Buying in this day and age is never that easy. However, you can narrow down your choices based on the tasks that you’re going to be using your new folding knife for.

For example, if like me you are an aspiring handy man, then you can already rule out pen knives and peanut knives, simply because their blades are not going to be strong enough to take down and heavy duty cutting or tackle any household obstacles. This leaves us with the decision of a Cooperhead, Stockman or Trapper blades. All of these blades are a little more heavy duty, and likely to handle any household task thrown at them. From here, my recommendation would be to go for a Stockman blade, and here’s why.

A stockman blade comes with 3 blades in one, they vary in size so you can use different blades of different tasks. This makes the Stockman knives incredibly versatile, a trait which is invaluable for jobs around the house. They can easily handle any household task, as well as few outdoor jobs and personal tasks like opening packages and letters. With blades big enough to handle cutting through that wire, rubber piping and plasterboard, yet small enough to pry that awkward nail from the wall and get under carpet fixings, the Stockman is the blade for the home renovator. I’m sure after a few weeks of quality time with your new folding knife you’ll wonder how you lived without it for so long, and with summer on it’s way, you’ll be extending it’s use to that garden in no time at all. They simply are the new must-have tool for the home enthusiastic.

Program GUI Evolution – A Simple Guide

By   December 26, 2015

GUI (a graphical user interface) is very important for every software program. Although, many computer users recognize GUI as a separate program, it requires detailed consideration. A graphical user interface enables users to interact with devices with images and different graphic elements rather than text commands. Nowadays, it is impossible to imagine software world without GUI of such famous Operating Systems as Windows, Mac OS and Linux. Millions of users interact with their favorite programs with the help of their GUI.

Users always notice when GUI changes and becomes better and easier. Obviously, programs with intuitive GUI are more popular among end users, because people don’t have to spend a lot of time on studying how to use software. GUI constantly changes to satisfy the growing needs of customers and GUI developers try to take into account latest developments and software researches on program users psychology and software usability. Here you can see some examples how GUI changes: (screens)

Some users can’t appreciate programs at their true value if their GUI doesn’t change and update.
Only professionals can design the best GUI for software projects. There are many professional GUI development companies. They have hands on experience in developing easy to use applications with intuitive and user-friendly interface.

While designing GUI it is focus on these principles:

1. Program GUI must be intuitive and simple (users don’t like to think a lot of how to use the program)
2. GUI must be task-oriented with smooth navigation
3. Test your GUI before launch and make sure it is logical
4. Don’t provide users with too many features of GUI
5. Provide users with rich navigation assistance

A graphical user interface uses visual elements that present information stored in a computer in an easy-to-understand manner. These elements make it easy for people to work with and use computer software. A GUI uses windows, icons, and menus to carry out commands, such as opening files, deleting files and moving files. GUI software is much easier to use than command line software since there is no need to type in and memorize individual commands.

One place where the gettext functions, if used normally, have big problems is within programs with graphical user interfaces (GUIs). The problem is that many of the strings which have to be translated are very short. They have to appear in pull-down menus which restricts the length. But strings which are not containing entire sentences or at least large fragments of a sentence may appear in more than one situation in the program but might have different translations. This is especially true for the one-word strings which are frequently used in GUI programs.

As a consequence many people say that the gettext approach is wrong and instead catgets should be used which indeed does not have this problem. But there is a very simple and powerful method to handle these kind of problems with the gettext functions.