Charging EFB Battery with YATO YT-8301 Charger: Recommended Settings for AK, WET, GEL, AGM

Set 16V 0.5A for a week, if it doesn't help then buy a new one.

You can't do a week without a car. I can charge it for 8 hours a day. It makes sense?

The dream would be if, as I wrote earlier from the news, you would desulphate it from time to time.
Try 16V 0.8-1A for 8h for 2 weeks. Now I ask, does it make sense?

Since a discharged battery at 16V does not reach 3A, it is inoperative (sulphated) and ordinary charging will not do anything. It has lost capacity, and its internal resistance has increased. Ie. it will charge, but the effective capacity is probably 15-20Ah. A specialist from the UK probably used an automatic Chinese tester and told you what appeared on the screen, i.e. "Good, Recharge", but he did not know that this tester first does not estimate the battery capacity, but only the starting current, and that its indications on a discharged the battery are completely unreliable ... I did such an experiment that as a standard (according to the cycle proposed by Delco) I charged a strongly sulphated 48Ah battery, the tester showed "Good battery, SoH: 97%, SoC: 99%", and under an artificial load the capacity of a dozen Ah. I managed to bring this battery back to about 40Ah, with several charging cycles to 16V and discharging under an artificial load, but it took probably a week. But firstly, I had a second battery for replacement, secondly, I had a tester, a decent power supply and an artificial load up to 180W.

Have you done car diagnostics? Do you have any errors on your computer related to the charging system? In Kugi there was a problem with waking up the multimedia system / BT at a standstill ...

Today I charge it for 8h 16V 1A, and leave the clamps disconnected until the morning. If it is more than 12.08V I will start looking for a thief.
It does not show any errors, I connected STN1170 ELMv3 under Forscan

I am looking for a different or a new battery, I found a stimulant at the Moll OEM 80ah auction, I wonder if I would buy it if it was 2 years old.
Now all these EXIDE, BOSCH are garbage ...

https://rover.ebay.com/rover/0/0/0?mpre=https...F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F173912639276

I kept it under the power supply for 8h, the parameters were constant:
15.84V, 0.99A, CC mode

In the morning I connected the clamps. Still, the voltage dropped to 12.08V overnight and to 9.83V when firing up.

So it's bad with him and qualifies for replacement?

I had such a battery in a Focus from 2011, I drove a lot, but after 7 years of use and driving 155,000 in the car. Km. He fell. He had the same symptoms as yours, I've tried everything.
Ultimately, not salvageable. He fell.
I had to buy a new one, you can check if it died by connecting the eobd cube and checking the battery charging reading, as it charges it all the time with about 15V, the battery has already expired. After changing the battery, you still have to reset the system. It is a combination of turn signals etc. Then the computer will know that you have replaced the battery and will start charging it and discharging it will voltage from 12v per piece to 14.8v. Depending on whether you are braking or accelerating etc.

Yes, after plugging in the computer, the charging was usually above 15V.
I exchanged it for a new Exide.
I also did the BMS reset, as you wrote, I could do it with a computer, but the combination of light switches also works.
In general, this charging system irritates me because it keeps the battery at the level of 12.2 - 12.4V, which means it leaves a reserve for recharging during engine braking, but no matter how long I drive, it was never fully charged.
But I have already resigned myself to it, I will simply recharge it with a power supply 2x for a year :)

I also made a plexiglass housing for the DPS5020 power supply.
For the test, I connected it to this old battery at 16.25V, 0.5A, CC mode.
After a week, the battery seems to have repaired itself because it already has a voltage of 12.6V and does not drop.

After a week, it did not repair itself, but it delaminated. After a year it sulphates, and after two you will buy a new one. But you have an eco car.