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Home > Mobile Phone Accessories > Chargers

Chargers For Mobiles And Tablets

USB Charger

We have chargers (wall, car, usb, wireless chargers, charging hubs and charging cables)for almost any mobile phone, tablet, GPS or iPod. Choose from our range of mains chargers, car chargers, wireless chargers, powerbanks and more.

Chargers

Different Charger Types

Phone chargers work using an inbuilt switch mode power supply (SMPS). This consist of a high frequency transformer, a full-wave rectifier, a high frequency switch and its control mechanisms as well as filters.

Working Principle

They work on a simple principle where AC is converted to DC. There are 3 main components of phone chargers. The three main components are step-down transformer, rectifier (full wave bridge rectifier) and voltage regulator.

Safety Standards

Battery and charger safety is a major issue among all mobile phone users. Instead of buying a cheap and battery, people should buy quality batteries and chargers. Awareness among the people about avoiding counterfeit products is also important. Similarly, all devices should be carefully handled and charged.

There are also situations where genuine products have malfunctioned however, this is extremely rare. in Australia there hasn't been any cases of serious injuries cause by batteries of mobile phones overheating. No records of fire caused by genuine mobile phone chargers are present with the fire authorities.

Counterfeit chargers are a safety hazard to us as well as a hazard to phones. An 'Apple' charger that costs $2 can be a duplicate of a real Apple charger internally. Such chargers are of very bad quality. The people who manufacture these chargers completely ignore all safety standards. There's a big risk if a charger doesn't have proper insulation. In order to avoid these circumstances, every individual should pay a few more dollars for an Australian safety standards certified charger while connecting it to a smartphone worth several hundred dollars containing a highly volatile lithium battery pack.

USB Types

USB Connectors

Normally, USB chargers or power adapters come in a range of inputs and are normally labeled and certified for 100 to 240 volts, either 50 Hz or 60 Hz. Phones typically only need 5 watts while the larger devices need the higher power adaptors to charge. In Apple devices, the power adapters have an output of 5VDC at 1amp (5 watts) or 5.1VDC at 2.1 amps(10 watts) and sometimes higher depending on the device.

Below is a list of the different USB cable types and their uses and applications.

Micro USB

Micro USB chargers have a similar width to that of Mini-USB, but approximately half the thickness, enabling their integration into thinner portable devices.

The thinner Micro-USB connector were introduced in order to replace the Mini-USB chargers including smartphones, personal digital assistants, and cameras. It design is rated for at least 10,000 connect-disconnect cycles, which is more than the Mini-USB charger design.

USB Type-C Chargers

After being finalized in August 2014, it defines a new small reversible-plug connector for USB devices. The Type-C chargers connects to both hosts and devices, replacing various Type-A and Type-B connectors and cables with a standard meant to be future-proof.

These cables are electronically marked cables that contain a full set of wires and a chip with an ID function based on the configuration data channel and vendor-defined messages from the USB Power Delivery 2.0 specification.

Mini USB Chargers

Mini-USB chargers were first introduced for smaller devices such as digital cameras, smartphones and tablet computers. It was introduced in April 2000 along with USB 2.0.

These chargers are smaller than regular USB and is still used in some cameras that require non-standard connectors.

Lightning Chargers

Lightning chargers are proprietary computer busses and power connectors. Apple Inc. created lightning chargers on 12th of September in order to replace its predecessor. The Lightning connector is used to connect Apple mobile devices like iPhones, iPads and iPods to host computers, external monitors, cameras, USB battery chargers, etc. It is more compact than the 30-pin dock connector and can be inserted with either side facing upwards.

Apple 30-Pin Chargers

The Apple 30-pin chargers were common to most Apple mobile devices such as iPhone (1st generation, iPhone 3G, iPhone 3GS, iPhone 4, iPhone 4S and many more until the lightning connector was released in late 2012. As the Apple devices changed, so did the signals in the dock connector.

Wireless Chargers

Wireless chargers use an electromagnetic field to transfer energy between two objects through electromagnetic induction by the help of a charging station. An induction coil is used to create an alternating electromagnetic field from within a charging base, and a second induction coil present in the portable devices take the power from the electromagnetic field and converts it back into electric current to change the battery. Wireless charging is quicker and easier compared to other methods of charging devices.

Quality Chargers

Chargers of high quality are extremely important. There have been reports of injuries caused by malfunctions of genuine batteries or wall chargers. The causes are poor quality, uncertified or counterfeit battery or charger

Fake batteries and chargers are often supplied in the black market phones and are sold as after-market products. They are usually found on auction websites or in unregistered stores and market usually sell it at low rates. Australian Consumer Law specifies that only certain charger certifications are valid for local sockets.

Quick Charge 3.0

Quick Charge 3.0 is the latest fast charging technology. It allows high levels of current to flow to the battery and maximizes its charging efficiency. These products also charge their batteries at high voltages which allows higher rate of power transfer through commonly found cables.

In order for it to work, both the phone and the charger must be compatible with the same charging voltages and current. The device should support 9V/2A for the process to take place in a short period of time.

References

  1. https://community.ricksteves.com/travel-forum/tech-tips/usb-charger-question
  2. https://www.extremetech.com/computing/115251-how-usb-charging-works-or-how-to-avoid-blowing-up-your-smartphone
  3. http://www.makeuseof.com/tag/understanding-usb-cable-types-one-use/
  4. http://www.androidauthority.com/wireless-charging-qi-pad-technology-580015/
  5. http://www.mobilefun.co.uk/blog/wireless-charging-guide/
  6. https://www.gizmodo.com.au/2014/06/please-dont-buy-cheap-phone-chargers-and-cables/
  7. https://www.quora.com/How-does-a-mobile-charger-work-What-are-its-components
  8. http://www.belkin.com/au/Resource-Center/power-delivery/