For this solar panel, Lu Linlin has been learning about machinery and circuits since she came back, fortunately, Jiang Yan has a variety of books at home, otherwise this solar charging panel really doesn't know how to repair it.

Giving up the position, Jiang Yan motioned to Lu Linlin to start, squatting next to the solar charging panel, Lu Linlin turned the entire board over, revealing the circuit structure on the back.

"This one has a waterproof function, and if the shell is not damaged, it can work normally."

After carefully inspecting the shell of the solar charging panel to make sure there were no cracks or damage, Lu Linlin explained to Jiang Yan, who was also squatting next to her.

"But there seems to be something missing."

Looking at the solar charging panel, Lu Linlin recalled the content of the book, and kept looking for something on the back of the solar panel.

"What's missing?"

Jiang Yan on the side hurriedly spoke when he heard this, such an important thing made Jiang Yan very nervous now.

"There should be a lack of a voltage converter, and the current emitted by the solar charging panel is not stable, so a voltage converter is needed to stabilize the current, but at the moment there are only boards and batteries, and nothing like a voltage converter is seen." Putting down the solar panels, Lu Linlin kept looking around for something similar to a voltage converter.

Listening to the clouds, Jiang Yan didn't know what the voltage converter in Lu Linlin's mouth was, scratched his head, and Jiang Yan asked.

"What is that thing supposed to look like?"

"It could be a relatively large plug, or it could be a box." Constantly searching around, Lu Linlin used her hand to draw a rough shape.

Hearing this, Jiang Yan kept searching the memory in his mind, and when he brought the solar charging panel back, it seemed to be accompanied by a square box, but Jiang Yan thought that this thing was on the battery car, so he didn't pay much attention to it.

"You wait for me."

Thinking back to the memories in his mind, Jiang Yan returned to the farmhouse, and after a clanging sound, Jiang Yan walked out with a box.

"Is this it?"

Placing the metal box in front of Lu Linlin, Jiang Yan rubbed his arm.

Moving the metal box in front of her, Lu Linlin recognized the words on it and nodded excitedly.

With transformers, solar panels and batteries, the next operation becomes simple, only need to link all three, and such a simple solar charging panel is made.

Holding the copper wire, Lu Linlin cut the plug of the solar panel short, then tore the outer skin of the wire, used her own copper wire to link it to it, and then wrapped it tightly with waterproof black tape.

"Sister Yan, where is this solar charging panel?"

After connecting the circuit, Lu Linlin raised her head and asked Jiang Yan, hearing this, Jiang Yan stood up and looked at the entire courtyard, and then set his eyes on the roof of his house.

If the solar charging panel is placed on the roof, the efficiency of lighting will be much higher than that of the ground, and because of the reasons on the roof, Zhao Dabai and Kaka will not break it when they are playing, and the wiring will be easier.

Seeing Jiang Yan's gaze, Lu Linlin stood up, and her eyes gradually glowed when she looked at the roof.

"Roof it!"

The two hit it off, Lu Linlin held the ladder, Jiang Yan came to the roof with the solar charging panel, and along the gap in the roof that was repaired before, Jiang Yan warped the wooden strip on the edge with a claw hammer, and then went down the line little by little along the side.

After finishing this, Jiang Yan picked up two hollow bricks from the ground, used them as a bracket for solar panels, and then began to repair the roof that had just been pried open.

Lu Linlin, who was on the ground, saw this situation and returned to the house, took the wire that Jiang Yan had come down, took out the copper wire to extend it partially, and then connected the other end to the transformer, the method of connecting electricity was not as difficult as imagined, just because Jiang Yan did not have this knowledge, he seemed to be ignorant.

took out the tape to glue the connection, Lu Linlin took out the car battery connection cable placed outside, connected it to the transformer with the connecting wire, and stuck the other end on the positive and negative poles of the battery.

The knocking on the roof disturbed Lu Lili, who was still asleep, and walked out of the door with her clothes on, Lu Lili looked at her sister's busy figure in the living room, and her brain couldn't turn for a while.

"What to do?"

Hearing her sister's voice, Lu Linlin raised her head and said excitedly: "We will have electricity in the future!" ”

"What's that?"

However, Lu Lili, who has never read a book, doesn't know what household appliances are at all, seeing her sister's excited appearance, Lu Lili rubbed her eyes, raised her head and looked at the ceiling.

"What is Sister Smoke doing? Did the house collapse? ”

"No, go wash your face."

Looking at Lu Lili's stunned figure, Lu Linlin's frenzied surprise gradually calmed down, and after checking whether the battery had rushed into the electricity, she waved her hand and drove Lu Lili out.

Coming down from the roof, Jiang Yan put the tools he was carrying into the storage room, and then walked to Lu Linlin's side, bending down to observe the masterpieces of the two.

The two car batteries at home are finally able to exert their abilities, counting the battery in the battery car, Jiang Yan already has three car batteries at home, which is completely enough for his own lighting.

"How's it going, does it work?" Wiped the indicator light on the battery, and saw that the indicator light was on, Jiang Yan asked Lu Linlin excitedly.

"It's useful, it's useful." Observing the various characters on the battery, Lu Linlin opened her mouth excitedly.

"How long does it take to fill this battery?"

Hearing Jiang Yan's question, Lu Linlin glanced at the information logo on the battery, and then stood up.

"This battery is 1200W, and this solar charging panel is...

"Needless to say, I don't understand, just tell me how long it takes."

Seeing Jiang Yan's refusal, Lu Linlin said helplessly: "In the fastest case, these two batteries will be fully charged in 12 hours each, and the battery of that battery car is a little longer, it takes 23 hours." ”

Hearing this, Jiang Yan looked at the battery of the battery car in shock, and the battery of this small battery car was actually larger than the two car batteries.

"But this solar charging panel depends on the weather, if there are many clouds, it will take longer, and if it is rainy weather, this solar charging panel has no effect."

Walking outside the door, Lu Linlin looked at the sky and faced Jiang Yanjiang Street.

Following Lu Linlin out of the door, Jiang Yan looked at the sky where the clouds were gradually gathering, and the corners of his raised mouth instantly sank.

"Is this going to rain?"