The laptop battery stopped charging after repairing the power cable, what's wrong?

Question

Iron

Hello.
I have a Lenovo 2016 laptop.
The other day, the charging cord broke, right next to the plug.
The battery on the laptop is already decrepit - but for 10-15 minutes the meringue of the network always kept it, it was charged 100%.
I soldered the cord, turned on the laptop and saw the following message near the battery indicator: "0% available (mains power)".

spoiler

Why is this, maybe soldered somehow wrong?
Or the battery was thinned into trash without a cable and some kind of protection worked?
How can be cured?
Thanks

Answer 1

A friend had something similar.
He also soldered the cable from the laptop, as a result, he had enough of the charge controller, after which the laptop, in principle, did not charge, and began to work as a stationary PC, tobish, from the network.

Answer 2

"I soldered the cord" is the answer to your question. Now you have completely killed the acc, and the cord is your own-shit-production

Answer 3

It's not a fact that everything was soldered correctly.
If the number of cables is 3, then you need to make sure that the thinnest one (charging identification) gives at least some voltage (plus).
The principle of operation is as follows: the laptop sees non-native charging, as a result it does not charge the battery and the percentage does not work at full capacity (0.40-1.1 Ghz does not rise above specific frequencies for each of them)
Check in the device manager, the cpu tab
If everything is normal with the frequencies, then most likely the battery died and the controller went into protection