In order to comfort Academician Sima, Lin Feng asked people to collect a lot of dried mountain goods from nearby mountain villages. The two of them coincided with this, and they both liked the dry, salty taste.

"Let's calculate the cost while everyone is resting. ”

Lin Feng was ready to be intimate with her for two days, but he was still dragged to the laboratory.

Research can be done regardless of cost, but if you want to produce and manufacture in large quantities, you have to calculate the cost in detail.

The materials used to make super batteries are all common things on the market, and this is worthless, almost negligible. The biggest cost is to invest in the production line, and all kinds of special equipment are expensive, which belongs to the cost of fixed assets.

The two carefully calculated that to build a fully automatic production line with a daily output of 2 tons of battery compounds, at least 800 million equipment funds would be needed.

In addition, for every 1 gram of compound produced, it consumes an average of 3 yuan of electricity.

Of course, this is only a small amount of money, and the biggest investment is to charge the finished battery.

Super batteries need to store a lot of electricity before leaving the factory in order to maintain the power supply for a long time, which cannot be faked for a penny.

The two did an experiment, to fully charge 1 gram of compound, it takes 4380 kilowatt-hours of electricity, and according to the price of 5 cents per kilowatt-hour, it will cost 2190 yuan.

The button battery used for mobile phones contains 5 grams of compounds, according to this algorithm, the charging alone is more than 10,000, but the price of button batteries in the mall is only 100 yuan.

Lin Feng felt a little congested, things were made, but he encountered a big problem in charging. Do you have to build a large power station yourself before mass production?

But where to find such a large capacity generator set? Even if the generator is built, but what about the energy?

According to the conservation of energy, nearly 2.2 billion kilowatt-hours of electricity are generated, and it is scary to need to consume energy, okay? The world only consumes 500 million or 600 million kilowatt-hours a day.

But on second thought, do you need to charge that much?

Take button batteries as an example, if they are used in mobile phones, it will take a few years at most, and more mobile phones will be eliminated and replaced with new ones within two years.

A mobile phone consumes 3 kilowatt-hours of electricity a year, and it takes 5 years to use it when it is full, and it is only 15 kilowatt-hours.

Before Lin Feng promised the world that the super button battery can be charged for 10 years, then it will be calculated according to 30 degrees, and the cost of a button battery will be more than 30 yuan.

That's pretty much it.

But the use of super batteries is definitely not only mobile phones, but also all kinds of household, industrial, aviation and other major fields, these things consume a lot of power, if there is no super cheap power supply, the price sold can not make the battery popular.

At the end of the day, super batteries are still the electricity they sell, so how to produce electricity at a very low price is still a problem that needs to be overcome in the end.

Seeing Lin Feng in a state of thinking, Sima Lili's eyes lit up. Since the two met, Lin Feng gave him the feeling that he was generally not very serious except for negotiating prices and counting money.

Now that she saw that he was actually serious and serious, she couldn't help but shake her heart.

If she knew that Lin Feng was actually hesitating about which power generation device to choose at this time, I don't know what she would think.

There are ready-made power plants in the Cosmos Mall, one that uses a controlled nuclear fusion reactor to provide energy for the power generation device, and the other that uses time crystals as an energy source to produce eternal energy.

Both power plants have their own advantages and disadvantages.

Controlled nuclear fusion reactors need to consume a large amount of hydrogen isotope deuterium, commonly known as heavy water, every day. There are a lot of such things on the earth, and there is a lot of fishing in the ocean, and it basically does not cost anything.

But its shortcomings are also obvious, if such a reactor falls into the hands of someone who cares, humanity will have weapons that will destroy itself more easily.

The time crystal, on the other hand, is a very abstract concept, and scientists on Earth have now made it in the laboratory, but have not yet studied all its secrets.

Lin Feng has seen reports on this, and now that everyone understands the time crystal, they feel that it is somewhat useful in studying quantum, but there is no good way to use the "perpetual motion" of its internal atoms to provide power to the outside world, and there is not even a concept.

The advantages of this kind of power generation device are obvious, a purchase is a lifelong benefit, the disadvantage is that the price is very expensive, a 1 billion kVA power generation device, the price is as high as 8 trillion.

So whether to choose a low price and high risk, or spend a lot of money to buy a foolproof and once and for all, this made him a little entangled.

He went to the mall and searched carefully, and the price of everything involving time crystals was very expensive, and an engine cost hundreds of billions of yuan.

So it's the time crystal itself that is expensive, and it's obviously a very rare thing.

It's not that easy to make a time crystal by yourself, and even if you can make it, the cost will outweigh the use value, and it will definitely not be cost-effective.

Are there any naturally occurring time crystals on Earth?

As soon as he pondered this question, Lin Feng couldn't stop.

His understanding of time crystals is limited to the information that can be searched on the Internet, in fact, the understanding of time crystals is very limited by the entire human race.

Later he thought of big ears.

In the big ear, he encountered an inexplicable "ghost hitting the wall" incident, and according to Sima Lili, the time and space in it seem to have become extremely abnormal, could this be because there are a large number of natural time crystals there, and some unexplained phenomena are caused?

It's a possibility.

If you can really dig up natural time crystals on the earth, then it will be developed, you only need to buy a device, and then add energy yourself.

And no matter what, if you have the extra to sell in the mall, maybe it will change hands and make an astronomical fortune.

The more he thought about it, the more enthusiastic he became, so he decided to go to Big Ears again, this time with the ore smelter, and if he really touched the time crystal, he would dig it out for him directly.

"I'm going to go out in the next few days. ”

"Where?"

"Well, there's something going on at school. ”

Lin Feng didn't want Sima Lili to worry about him, let alone let her take the danger together, after all, the big ears were too weird. It's okay that the time crystal is doing the trick, but what if it's not?

"Then you go, I'll think about if there's any good way. ”

"Don't think about it, you can rest well these days, and there will be good news when I come back. ”

Lin Feng left Linjia Village alone, loaded a shield machine and an ore smelter with a Big Mac transport plane, and then traveled lightly, and after making sure that he was not being tracked and monitored, he quietly landed in the desert outside Big Ear in the early hours of the morning.

Coming here again, Lin Feng still has an indescribable feeling, the mysterious big ears are like listening to the sound of the sky, silent and eternal in the desert.