Tools: Cross screwdriver and flat screwdriver.

1, Xiaomi mobile power supply (charging treasure) adopts all-aluminum alloy shell, anodized and frosted, and encapsulated at the upper and lower ends. It feels great, but it is not easy to open it without damage. I also studied it for a long time, and it is difficult to open it without damage. First, gently pry it up at the gap at the bottom of the power supply with a screwdriver. You can see the double-sided tape technology below, and gently pull the white brand by hand.

2. Remove the four fixing screws with a Phillips screwdriver (the smallest one), and then pry up the black insulating cover with a screwdriver. At this time, pay attention to uniform force, and don't pry the insulation cover plate out of shape, otherwise it will affect the later installation. After removing the bottom cover, you can see four cylindrical lithium batteries;

3. Remove the upper cover of the power supply in the same way, and gently push it up at the bottom with your fingers, so that the whole battery inside the power supply can be completely drawn out and replaced.

Examples show that:

Xiaomi's 5000 mA mobile power indicator is all on, but it can't charge the mobile phone. It is suspected that it is a battery problem.

The disassembly process is omitted, and the disassembly is basically intact. Measure the battery cell voltage after disassembling the machine, and it is about 4. 1V when the machine is not turned on. As soon as it is turned on, it will be linearly powered off until about 3 V. I'm too lazy to disassemble the battery. I just took the battery out of my apartment. The estimated capacity is around 4000, and there is not much difference in size. This is a perfect resurrection.