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The bottom line is...
Solar... transportation for the future!
Source: (The Design Blog)
Sometimes you collect more energy than you actually need so with larger panels a voltage regulator should be fitted to control the flow of energy and prevent battery damage.
It would be hard to find a more environmentally friendly power supply. Clean and green, solar power is a renewable, sustainable and non-polluting source of energy. It is easy to see the appeal of solar power for domestic use. Low maintenance and long lasting, it is a highly cost-effective and reliable energy supply.