How I bought a Chinese power bank and how I made a “person” out of it

A couple of months ago, I succumbed to the temptation of low prices and bought a cheap Chinese power bank with a solar battery in a supermarket.

Here is this:

Of course, I considered myself very clever and pressed the power buttons on several of them to find the one that at least turns on and has at least some charge in the battery. Of these, I rejected those in which the case was not completely closed, devices with a swollen battery and a poorly fixed solar battery. Of the two options - 5000 mAh and 9000 mAh, I chose, of course, the larger one. He took it, paid for it, got into a taxi and hooked up a fairly hooked up phone to it. But it was not there! Charging began, but stopped after 1-2 seconds. It was here that I remembered the moral of the tale of a priest (emphasis on the last letter) and his worker, Balde. Despite all my tricks, I bought, after all, a non-working gadget.

But he did not despair, but decided on this occasion to give free rein to his bored, it was his hands.

When I disassembled the casing (it is easy to disassemble, by the way), I immediately discovered the reason for the strange behavior of the gadget: I saw white streaks on the board, either saline from swimming in water, or from a flux not washed away by a strained Chinese hand. The whole thing was gently washed off with a monitor wiping device containing isopropyl alcohol and a toothbrush, and the first problem was solved. But trouble does not come alone. Check out my 9000 mAh battery:

Well done, even the metal plate did not regret for persuasiveness!

“It’s impossible to live like that” - I thought, and deciding to go all the way, I ordered a suitable 5000 mAh battery for aliexpress.

Here it is, in the bag next to the patient.

There were, of course, certain doubts about the veracity of this figure, but my phone with a 4000 mAh battery capacity, which I used with might and main for two hours during the charging process, charged 78% and another division remained on the indicator of the bank. So the battery capacity is more or less the stated.

The last stage is the easiest: unsolder the old battery, solder a new one, fix the rubber bumper and snap the case.

Happy end!

PS Question to readers: I have a collection of old C-Pen pens-scanners (200, 600 and 800 models). Does it make sense to take a picture of them, figure out what is what, and publish it here?


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