Scheme of the correct charge of a lead battery (battery)?

Question

Rechargeable batteries

On the net you can find a lot of information about the proper nutrition of lead batteries, for example, the site Alex Soroka, on Habré. However, infa is mostly of a fundamental nature.
You need a ready-made device circuit or controller firmware for the CORRECT charge / recovery of the battery.
Maybe there are open source projects?

PS if anything, this is for myself personally, it’s simple, I have a lot of half-dead batteries from uninterruptible power supplies, and simple charges kill them, although they can work in a sparing mode for many years to come.

Answer 1

Like this?
https://habr.com/en/post/319414/
But there are already a bunch of ready-made chargers where a bunch of modes are provided, and you can even program your own charge-discharge scheme https://aliexpress.ru/wholesale?catId=0&initiative...

Answer 2

Let's try to describe the problem and the solution.
1. Batteries in uninterruptible power supplies and in cars are physically the same, but the functions are different. For a car, you need to spin the starter and apply a spark, and then you can even throw out the battery and the engine will still work (unless, of course, a very smart car). For an uninterruptible battery, the battery must compensate for power outages for an extended period of time. If in the first case a large but short-term current is required, then in the second case it is required to maintain a sufficiently large current for a long period. Hence the differences and therefore charging to car batteries is not entirely suitable for an uninterruptible battery. You can change the battery. Look for the article installing a car battery to an uninterruptible power supply. The cons were also mentioned there.
2. You can restore the battery, but not all.
Causes of inoperability (From memory, maybe I forgot):
-
Sulfation - Shedding of plates
- Boiling off of electrolyte
Shedding of plates - you can’t restore it in any way. Where the plates are attached to the main "electrode" destruction occurred and they fell off.
Sulfation - Salts of lead and zinc precipitated. Maybe even shorted the plates. Recovery is possible with slight sulphation.
Boiling off the electrolyte - It's easier. It is clear that it is necessary to add an electrolyte and it is possible to partially restore the battery.
3. Recovery (from memory).
a) For cars. Batteries consist of cans and the cans are isolated from each other. We mechanically remove the jar and change it to another, but this is for Soviet batteries.
b) add an electrolyte (density 1.29) in the hope that it will dissolve the salts and monitor the density of the electrolyte when charging (in automobiles 1.27 - 1.28 - I don’t quite remember).
c) The battery is restored with a current of 0.01-0.02 from the capacity., those batteries are 60 Ah = current 0.6-0.12 Amperes.
Conclusion. Battery recovery is a purely "physical" impact. Dissolve salts, replace plates (jars), restore electrolyte. The amount of time spent becomes disproportionately expensive compared to buying a new battery.
With car batteries, you can probably find information from the 1960s-1980s. But with a battery from a non-permanent battery ... What is the density of the electrolyte? What is the recovery current mode? For example, in the mode of constant use, the voltage on the battery of a non-permanent battery is 15V, but you will kill a car battery with such a voltage.
The operating mode of the non-permanent battery is very tough, so "if the doctor said to the morgue, then to the morgue."
For information, there are automatic chargers for car batteries - but the battery is only charged by 75-80%, because there is a control (controller) of the battery input resistance and as soon as it reaches a certain threshold, the machine considers the battery charged, but the battery is not fully charged.

for the CORRECT charge / recovery of the battery.

If you want CORRECTLY, then do not use automation)))