Brands do not work, but like anything else, better brands will last longer and cost a bit more. As opposed to NiMH or NiCD: You really SHOULD use the TYPE and STRENGTH of batteries that come with the lighting fixture. For some lights, it does not matter, but most lights have internal controllers that are designed to work with the light that came with it when you bought it, or which is recommended in the user manual. If you use the wrong type of battery, you can end up frying the internal circuitry, and that would not only end the light, you would also void the warrantee. I know a lot of people say this is not true, but a different battery may work for a short time, but with a relatively short time, the efficiency of the light will be reduced and you may well destroy the fixture.
1. Debate - Should Solar Power be necessary?
Solar energy is a good supplement to our current energy needs, but it will never replace coal or nuclear. Solar is good for remote areas, single dwellings, and small office buildings. Otherwise, it's a good supplement but not a replacement for other power generation. --------------------------------- The bad side of solar is the solar panels are expensive, and since they are largely plastic, the materials come from oil. Solar also is dependent on the sun. If the days are dark and cloudy such they are a few months of the year, they may not generate enough energy as needed.
2. If humanity were to colonize space, would it be more practical to terraform planets or to build artificial habitats in solar orbit?
Terraforming will likely be done, but only for fun.Real colonists would live in rotating habitats. The comparison is... frankly, quite insane. Would you rather have two - maybe three Earths - or would you rather have hundreds - even thousands - of Earths, in this solar system alone?I use Earth here as a unit, specifically of area, but also of population. Orbital habitats can offer so much, and planets so little, the answer to the question is obvious
3. How is solar energy used?
South Korea - Famous South Korean multinational company, LG, finished building the largest solar panel of the country to produce electricity
4. why do people still pay for electric?
A variety of reasons. Inertia is one, but there are others. The initial cost of solar panels is high. Many Americans are poor savers and do not have the money for the initial outlay ( I am both an American and a poor saver). Solar panels also break and must be replaced. Broken solar panels are hard to dispose of and are not particularly good for the environment. As technology improves, the product gets better and the price drops, which will lead more people to solar. Another factor is that energy was until recently fairly cheap. As natural gas, oil, coal, etc get more expensive, solar looks cheaper by comparison. Telling people to pay more for something to save the environment has not been so persuasive on past generations. Similarly, only recently has vegatable oil become cheap enough in comparison to gas to make it worth it for use as fuel. If everyone used vegatable oil now, vegatable oil demand would increase and cause the price of vegatable oil to increase. Vegatable oil does not come in unlimited supply either - and food stores are beginning to fall around the world. Which means maybe you do not want to drive instead of eat. New eco friendly housing measures will no doubt become more and more popular as people work the kinks out and everyone gets used to the idea. For a lot of people, it comes down to 1) what do I think is pretty? 2) is everyone going to laugh at me? 3) is my roof full of dirt going to cause a lot of expensive (or dangerous?) problems that I did not see coming? 4) does it cost more? That's about it. I think eventually things will change, but slowly. You can not make other people change - you can only do a better job yourself and try to get others to notice. If it's important enough to you, you can find ways to do it. Do not get discouraged. Good luck on getting your own eco pad.