If you want to make the world cleaner and garbage and pollution-free, such as a brand.Therefore, the reduction of energy consumption and use the brand that can be used for a long time many times, etc.
If you want a clean world Waste, pollution-free Such as batteries , so reducing energy consumption. And a battery that can last for many times and so on.
If you want the world to clean without pollution such as waste battery so to reduce energy consumption. And the battery can be used for many times and so on.