method
1, find a mobile power supply bought two years ago, which is a 10000mAH polymer mobile power supply. This mobile power supply is used because its shell is plastic and has no effect on magnetic force; In addition, its volume is large and convenient to transform; In addition, it is also relatively easy to disassemble, some mobile power is difficult to disassemble, and it is not good to restore.
2, ready tools, need tweezers, screwdrivers, strong magnets, double-sided tape, etc. The magnets came out of a box, just two.
3, after opening, you can see that the battery part is composed of two 5000mAH polymer cells, plus a power board, and the current mobile power circuit is not much different.
4, first try the effect of magnets, you can easily absorb the USB cable, use double-sided tape to wrap the magnet, and then stick to the shell. There is a gap between the housing and the foam that holds the battery in place, so that the magnet can be inserted into it, and the housing is marked with a label to find out where the magnet is.
5, the final effect can only be said to be general, one is because the suction of the big head of the USB cable is strong, the suction of the small head is very weak (may be related to the material, have tried several different USB cables are the same), so that the USB cable adsorption effect is not very good, in addition to the USB cable still has some tension, but also makes the USB cable is not easy to absorb, in that is, the number of magnets is a little less.
If you want to achieve the overall adsorption function of the mobile power supply, you need to add more small strong magnets.