Kinetic energy is the cleanest form of energy, which is omnipresent in every moving object and can be stored by various techniques for optimum power conversion. The different forms of kinetic energy are vibrational, rotational and translational, which are obtained by vibrational motion, rotational motion, and motion from one location to another respectively.

Trends
1. Viber Burst
The number of cell phones in Australia is drastically increasing and at present it crosses the strength of population there. Hence, the need of cell phone charges, which can be used anywhere without the availability of electrical power has also increased there. A designer student, Josh Pell from Swinburne University of Technology, Melbourne, Australia, has developed 'Viber Burst' to harness kinetic energy. This is a tiny device, which can be strapped to hands, bag or any moving parts including your shoes. This can charge your cell phones in less than two minutes.
2. Etive
Passionate hikers, adventurers and outdoor campers usually face problems in charging their electronic equipment with undependable solar and wind energy chargers. Industrial designer Kyle Toole has designed a dependable charger, dubbed as Etive, for hikers who could get renewable energy by using their muscle power. Etive can be tied up to the legs of hikers and it harvests the vibrating shock forces occurring during walking.
3. Freecharge
Product designer from UK, Joe Mattley has designed a kinetic energy charger for tiny electronic devices such as cell phones and named it as Freecharge. It can be secured in any pocket or can be clipped to suitable piece of cloth. Freecharge works on the principle of converting kinetic energy to electricity and has a powerful sliding magnet and 2500 turn copper coil in a solenoid arrangement.
4. The nPower PEG:
It is the world’s first kinetic energy charger and is the prestigious product of Tremont Electric, from Cleveland, Ohio. You can keep it in your purse, briefcase or backpack and it generates energy while you walk, run, or ride. In an emergency, when you are not on move, just shake it and use. This is powerful enough to charge your mobile phone, GPS gadgets, MP3 players and many more.
The benefits
There are vast benefits of kinetic chargers and some of them are listed below:
There are some precautions also to be observed with these kinetic chargers and some of them are listed below:
The usage of this clean green and dependable renewable is growing very fast and other forms of kinetic energy harvesting systems are under development nowadays.
Kinetic Traction Systems (KTSi), which is having a vast experience in flywheel making has designed an advanced flywheel-based system that converts mechanical braking energy of the trains into electrical energy. This stored energy can be used to cater the power requirements of the train and rail traction power substations. This high speed carbon fiber flywheel technology is ideally suited for electrified rail and subway systems offering green cost effective energy storage and recycling solutions.
It is clear that the renewable energy sources like kinetic energy can take loads of electricity needs. But, there is a scope of development for catering the sudden increased loads or continuous loads. At present, the developments are going in the same direction.