Ding Chen is not a god, so if he wants to have light, he first needs something that can emit light, and if there is a sun, it doesn't count, it is the Sword Saint's. Pen, fun, and www.biquge.info

He hadn't had the idea of the lights in the apartment, but for some reason, the lights he could see were energy-saving tubes. This really makes people wonder if the purchaser ate the kickback from the energy-saving lamp factory when the apartment was built. Anyway, he didn't find any of the LED beads he wanted. That's why he had to put his mind on the street lamps in the old city and entrusted Wang Po to find it for him.

But just now, when he was observing the farm tools, he inadvertently looked up and looked up, and unexpectedly found that the lamp on the roof of the warehouse was not a lamp, but the LED beads he thought about day and night.

Because of the large area of this warehouse, several identical lamps are installed on the roof, and each lampshade has dozens of LED beads that Ding Chen wants, so he only needs to remove one lamp.

But it's not so easy to get a lamp like this, the main reason is that Ding Chen is not tall enough, and he can't reach the roof.

Because it was decided to be used as a storehouse when it was built, the roof is more than three meters above the ground, almost as high as the second floor of the apartment. Ding Chen pondered for a long time, and finally found a tall agricultural machine to climb up and removed the lamp closest to it.

It is also beneficial when there is no electricity, and when he cuts the wire, he can rest assured that he can boldly cut with a saber without worrying about himself being beaten down by electricity.

Ye Dai watched him climb up and down and toss curiously, but she didn't ask, she knew that as long as she kept following Ding Chen's side, she would be able to see his purpose of dismantling the lamp sooner or later.

Although the agricultural machinery is wrapped in plastic sheeting, the plastic sheeting is covered with dust. After Ding Chen dismantled the lamp and came down, he found that his whole body was covered in black ash and a lot of cobwebs.

He subconsciously raised his hand to wipe the sweat on his forehead, but Ye Dai burst out laughing.

Ding Chen didn't have too much trouble to guess why she was laughing, and he grinned a little, revealing a mouthful of big white teeth on his dark face.

He smiled at Ye Dai and said, "This is an epoch-making discovery. ”

Ye Dai had already accepted his habit of running his tongue with his mouth, and nodded in agreement: "Your teeth are so white." ”

So Ding Chen happily went back to his room with the lamp in his hand.

Although Ding Chen has no habit of cleanliness, he also does not have the habit of pretending to be blackfaced. So I took a battle bath when I entered the door. Before I could finish my washing, I heard someone knocking on the door outside.

He guessed that Ye Dai was coming, so he agreed, wiped his body with a towel, put on shorts and went to open the door. As a result, as soon as he opened the door, he heard an "ah" sound outside the door, Ye Dai blushed with shame, looked at him and said angrily: "Quickly put on your clothes." ”

Ding Chen thought to himself, how many times have you watched it, why are you still so polite? Just as he was about to habitually say a few words, he looked up and saw Carlo who was following Ye Dai staring at him with a pair of eyes, and he was shocked, and immediately closed the door.

Then I heard Carlo laugh in a low voice outside the door: "Sister is careful, she is reluctant to show us." ”

Ding Chen knew that Carlo was just taking the opportunity to make fun of Ye Dai, and while quickly putting on his clothes, he thought hatefully in his heart, "When there is no one to look around, I am afraid that you will not dare to look at it." ”

When he opened the door again, Carlo directly pushed Ye Dai and squeezed in. Li Jing is still the kid who is honest, standing outside the door and saying hello to Ding Chen first, obviously these two people heard the news from Ye Dai, so they came to see the excitement.

Ding Chen can't do anything about his sister-in-law, Li Jing can be regarded as borrowing light. So he took a towel and wiped his hair, and then ignored the curious eyes of the three people and did it himself.

Dilute sulfuric acid is not absorbent, and the water in the solution will gradually evaporate, even if the battery is sealed, it will still escape water. Therefore, at this time, the concentration of sulfuric acid solution in the battery has become high, and the first step to do is to dilute the sulfuric acid solution.

Normally, distilled water is added to dilute sulfuric acid, but Ding Chen does not have a condenser in his hand. Fortunately, he does not have high requirements for the quality of distilled water, so it can be used locally.

There is convenient biogas in the room to use, which saves Ding Chen the trouble of running to the yard to make a fire and boil water.

He first took an aluminum lunch box, poured water into it and burned it on the biogas stove. Then put a large pot lid on top of the lunch box, because the shape of the lunch box is irregular, so there is no close fit on one side of the lid and the edge of the lunch box, so that water vapor can come out from here.

Ding Chen didn't want this scattered water vapor, he turned the lid of the lunch box over and put it under the gap.

Soon the water in the lunch box was boiled, and the water vapor adhered to the lid of the pot and re-condensed into water droplets, and then flowed down the tilted lid of the pot and fell right into the lid prepared by Ding Chen, and in less than half an hour, he got a large bowl of distilled water.

Ding Chen has no way to accurately measure the concentration of sulfuric acid, so he can only rely on observing the degree of dehydration of the paper strip by observing the degree of dehydration of the paper strip by sulfuric acid to determine the approximate value. Theoretically, he hopes to obtain about 10% concentration of dilute sulfuric acid, but the error of sulfuric acid concentration measured by this method may exceed 10% plus or minus, but unfortunately he has no other way to replace it.

Considering the effect of the sulfuric acid concentration on the electronic activity, he could only prepare to set the sulfuric acid concentration higher, although this may increase the corrosion rate of the plates, but at least it is better than too low and no power is called.

As a result, when he felt that the concentration value was about the same, the liquid volume in the battery box was just over two-thirds of the box and it was not full.

Ding Chen thought about it for a while, and decided to accept it when he saw it, and no longer continued to add distilled water. Instead, we began to make grid-shaped positive and negative substrates.

Although there can only be one positive and negative pole of a battery, there can be many plates.

Ding Chen has prepared two metal sheets, copper and aluminum, threaded them through wires, placed them in pairs in the battery box, soaked in dilute sulfuric acid, and that's it.

It should be noted that he does not have enameled wire, and the insulation of ordinary wires will be corroded by sulfuric acid, so he can only connect the bare wires worn on each plate from the battery cover and use physical methods to fix them, so as to avoid short circuits.

In order to avoid destroying the tightness of the battery box as much as possible, this is a very delicate manual work, especially when he does not have an electric soldering iron to wiring and can only make holes in the plates for wiring. By the time he had finished tossing and turning, it was already dark, and there was a noise of the crowd outside the apartment, apparently the people who had worked all day had returned.

Ye Dai patted Carlo and asked, "Aren't you going down to cook?" ”

The small kitchen is under Carlo's control, and although there are women who help, Carlo is usually supposed to control the flow of ingredients in and out of the kitchen.

Carlo hesitated for a moment, finally remembered his business, and said to Ding Chen: "Wait for me to come back." ”

Then he said to Ye Dai: "You take a good look at him, I'll come back immediately." ”

After speaking, he didn't wait for the two people to answer, turned around and ran out.

Ding Chen listened to Carlo's footsteps as he ran, shook his head and said, "This kid is not too young, why is there no stability at all." ”

Then he said to Li Jing: "You can also go and help her." ”

Li Jing was more obedient, although he didn't know what he could help, he left obediently.

Ding Chen closed the door, rubbed his hands at Ye Dai and smiled: "There are only two of us left, what do you say we are doing?" ”