Batteries for Solar Lighting

by | November 22, 2017

Korean Kyung Hee University researchers proposed a model to recycle batteries of smart phones and the use of solar lighting systems-promoting energy and economic growth to rural communities.

Despite the high prices, smart phones have an average time of three years before being discarded. However, the lithium ion batteries used to feed them can last up to five years.

This means that every smart phone thrown besides generating a greater amount of junk email, we have a big waste of battery life.

To reduce this unnecessary garbage disposal on the environment and promote energy storage for rural communities, researchers at the University Kyung Hee from Seoul thought of a solution.

They proposed a model for recycling batteries and enjoy the time spent not adapted in units of energy storage in solar panels for LED light bulbs.

The proposed programme consists of five steps:

  1. Collection of the batteries; 2. test and selection; 3. production system; 4. Marketing; and 5. Installation.

Each of these steps will provide opportunities for job creation.

The candles and kerosene lamps used to illuminate the home of many rural communities are dangerous, inefficient and have a higher price than a small solar lighting system.

Batteries are one of the most expensive components of a residential solar system and contribute significantly in poison reverse lighting systems in rural communities.

Old car batteries, which are composed of acidic-lead, are commonly used in improvised systems of energy storage, but don’t last long.

A standard cell phone battery with a capacity of 1000 Ma/hour can supply power to feed a 1W LED lamp for about 3 hours, bright enough for reading and writing.

When connected to a small solar panel, this system can last about three years without needing any maintenance.

The researchers also built a complete system of 12 volts made with three batteries with a capacity of 3100 miliampéres/hour each, a 5W LED lamp and a small solar panel for less than $25.

These systems have the ability to light up a room for about 5 hours a day and can last about three years without any maintenance.

The future plans of the project are to collect batteries, recycling systems and contribute to reducing the cost of solar systems for rural populations in developing countries.

And you, like the solution? How about thinking of new ideas to recycle your old smartphone batteries and other materials of your home? Share with us your ideas and suggestions.

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