NiMH battery charger

I bought a stupid 3-slot charger from Li Hua’s house, but it languished for more than half a year (gu gu gu). I dug it out and changed it into a less silly charger
casing. Link
update:
The casing at the junk shop is sold out, but I still want to make one. You can go to Magnum 1688 to buy the link.
 
The charging chip used is Guanghuaxin's CJC5288. It supports USB power supply to charge 1-8 cells of nickel metal hydride or nickel cadmium batteries, and the simple peripheral
input is 5V. The charging current is about 250mA. The charging current can be Detect the resistor setting. Please refer to the chip manual for details.
The inductor can be replaced with another suitable one. I am consuming inventory, so I used this
 
input method. It can be powered by the original USB cable or type-c input (reserved pads)
If you choose to have your own cable for power supply, you need to cut off one side of the latch at the end of the cable, and also cut off the two plastic protrusions on the bottom cover. Otherwise, the bottom cover will not fit tightly together.
If you choose the type-c port for input, the casing will also need to be moved by itself. Opening expansion
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PS: The charger in the link above may actually have two The two types are mixed. The outer packaging is the same but the shape of the charger inside is different. This project is only suitable for the one on the left in the picture below, not the one on the right.