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Greetings to you friends. Today I will tell you about the most effective way to restore capacity in lead-acid batteries.
During the period of even the most correct operation, the battery loses its capacity every day. And at one point, his charge is not enough to start the car engine. This example escalates with the advent of cold weather.
The most effective way to restore the battery

Naturally, the car enthusiast puts the battery on charge and after a while sees that the battery is not charging, and the voltage when charging is normal - 14.4-14.7 V or higher (12.6 without a charger).
The most effective way to restore the battery

Then, if there is a load plug, a check is made to it and it turns out that under load the voltage is drastically drained. Everything indicates a loss of capacity by the battery. The reason for this is the sulfation of the plates.
The most effective way to restore the battery

Usually, with proper use, this happens after about 5 years. This is a very good indicator. And there is a way out - to buy a new battery. But, if you want to save money (since the batteries are not cheap now), and extend the battery life by a couple more years, then it is necessary to carry out its maintenance. And not simple, but special, which can revive the battery.

What batteries can be restored?


This method is suitable for batteries that during their operation were not exposed to severe current or mechanical damage. And they became unusable as a result of temporary, natural sulfation.
This method is not suitable for rechargeable batteries in which there is an internal shedding of plates, there is an internal circuit of the cans, there is a swelling or other mechanical damage.
The method is excellent for desulfation of plates and is popularly called the method of "polarity reversal" of the battery.
I will divide battery recovery into three phases.

Battery Recovery Process


Stage One: Preparation


The first thing is not necessary, but you need to do it to clean the surface of the battery from any dirt. Wash the entire surface with detergent.
Next, visually verify that there is no damage to the case, in the absence of swelling and bulges on the sides.
Second, open all the can plugs and make sure that there is electrolyte. If it is not in one of the cans, then you need to make sure that there are no cracks in the case.
Then, using a flashlight, inspect the plates inside - there should be no scattering. Here just for one you can clearly see sulfation - a white coating on the plates.
The most effective way to restore the battery

If everything is in order, add distilled water to each can to the level. It will not be superfluous to measure the electrolyte density of each compartment.

Stage Two: Classic Recovery Method


Before proceeding to battery polarity reversal, it is necessary to test the usual recovery method, which has already become a classic.
Step one: charge the battery to a full charge of 14.4 V.
The most effective way to restore the battery

Step Two: with a halogen bulb or other load, discharge the battery up to 10.6 V (voltage is measured under the same load).
The most effective way to restore the battery

We repeat the cycle of these two steps 3 times and charge the battery to full. We check the capacity of the load fork or starter in the operation of the machine. If the battery has recovered - well - continue to operate.If not, or not enough, then go to the third stage.

Stage Three: Battery Reverse


This method of battery recovery is the most effective of all existing. And reanimates the battery in almost 90% of cases.
Step one: We hang on the battery a load in the form of a halogen lamp, and discharge the battery to zero. The lamp goes out after about a day (it all depends on the initial battery capacity). We leave the battery with the lamp connected for another 2-3 days in order to finally discharge the residues.
Step Two: reverse current battery charging. We connect the charger on the contrary: plus to minus, and minus to plus. In order not to spoil your charger (or to prevent short circuit protection), we connect the same halogen lamp in series with the batteries. And charge the battery in reverse polarity. After the voltage rises to 5-6 volts, the lamp can be excluded from the circuit. It is advisable to set the charge current to 5 percent of the battery capacity. That is, if the capacity is 60 ampere-hours, then we set the charge current in the opposite direction to 3 Amperes. At this time, all the cans with electrolyte begin to seethe actively and hiss — this is normal, as the reverse process is going on.
The most effective way to restore the battery

We charge it for about a day, until the voltage of 12-14 V.
The most effective way to restore the battery

Step Three: again, we completely discharge the battery with a halogen lamp for a couple of days. Then we make the correct charge plus to plus, minus to minus. We charge to full to 14.4 V.
On this all actions are completed.

Battery Recovery Result


Typically, the result helps to increase the battery capacity to 70-100% of the factory, of course, there are exceptions.
Specifically, in my case, I managed to raise the capacity by 95% - which is an excellent result. White deposits of sulfate disappeared from the plates, and they turned black like a new battery. The electrolyte has become more transparent and clean.

Battery Recovery Video


I recommend that you watch a video where a completely “dead" battery, which is about 10 years old, is restored.
At the beginning there is a “buildup” with a change in the polarity of the power supply, and almost at the very end a complete reversal cycle has already been given.
come back
Comments (18)
  1. Oltaviro oltaviro
    #1 Oltaviro oltaviro Guests December 24, 2017 12:13
    5
    On a gel ride?
  2. Dimasik
    #2 Dimasik Guests December 24, 2017 2:33 p.m.
    7
    We look more
  3. Sergey
    #3 Sergey Guests December 25, 2017 09:56
    10
    For gel, this method can completely kill him. For them, special chargers go so that the gel filling does not boil and bubbles do not form that reduce the capacity.
  4. Valery Ratnikov
    #4 Valery Ratnikov Visitors January 1, 2018 12:59
    4
    I did this on acid 55a, everything turned out, but then they poured some grains of white into the jars and I left the changed polarity. The battery was 8 years old, he plowed another 8, then the machine was gone and the story was lost.
    1. Sagat
      #5 Sagat Guests January 22, 2019 2:08 p.m.
      3
      Good afternoon!!!
      I don’t understand 8 and 8 more only 16 years old, I doubt something.
  5. Pavel Skvortsov
    #6 Pavel Skvortsov Guests 14 january 2018 06:00
    4
    helped. I go to the restored :-)
  6. Novel
    #7 Novel Guests January 20, 2018 19:38
    7
    Waste of time and effort. The result is almost zero.
    1. Nick
      #8 Nick Guests March 13, 2018 09:40
      1
      Well, not quite zero, but about +5 years of operation after such a restoration =)

      I have the opelevsky Akum 12 years old, restored it twice, there are enough capacities in any frost, while there are no problems.
  7. Guest Yuri
    #9 Guest Yuri Guests January 20, 2018 11:43 p.m.
    24
    Having worked for 15 years as a battery man, I came to the conclusion that a battery that has worked for 5 years needs to be erected.From practice: if the battery has been without work for 5 years, then it is sulfated. What to do? - turn in colormet! If the battery was in operation, the lead lattice of the positive plates rots and the active mass crumbles. Here all the recommendations described above are like a dead poultice. 50% of cases of failure in the operation of the battery section - closing the torn off part of the plus plate to minus in the area of ​​connection of the minus plates into the block. Repair is just an autopsy section of the battery ... But if you are a fan of standing in bad weather on the track with outstretched hand asking for a “light” - this article is right for you. Clutching a couple of pieces of paper on the new battery, you and your passengers will experience all the charms of the ideomatic genre of Russian conversational etiquette!
    1. Alexpanych
      #10 Alexpanych Guests 22 january 2018 13:14
      5
      Something doesn't fit. For a couple of years, Batya and I did not have a single battery that lasted less than 5 years. And there were many: Cossacks, 2 Muscovites, 3 frets, Ford Tourneo, Kia Carnival, Citroen Berlingo. By the time it is more than 70 years. Batteries changed, of course.
      Of course, the statistics are less than that of the battery man))
      But how we did not get into the statistics - amazing!
    2. Guest MICHAEL
      #11 Guest MICHAEL Guests July 21, 2019 6:02 a.m.
      0
      I HAVE THREE BATTERIES ALL LIFE, I NEVER HAVE A PROBLEM WITH A FACTORY ... + I USE THESE BATTERIES AND ON A BOAT WITH AN ELECTRIC MOTOR ... AUTO POSSESSION EXPERIENCE - MORE THAN 50 YEARS. LODGE LOCATION 23 YEARS)))
  8. Granddad
    #12 Granddad Guests February 3, 2018 7:58 p.m.
    1
    All this is wonderful! That's just where to get the charger WITHOUT protection against wrong polarity! ???? Apparently, it can be ONLY improvised devices. Or someone can tell how to disable (permanently or temporarily) this Protection !!!! That would be great !!!
    1. another grandfather
      #13 another grandfather Guests April 19, 2018 18:23
      0
      elementary protection -connection through a light bulb of 12 volts 50 watts, if the charger tolerates amperes that way by 5 it will not be anything.
    2. Guest Eugene
      #14 Guest Eugene Guests August 6, 2018 15:13
      0
      Read carefully, the battery must be completely discharged
  9. Stas
    #15 Stas Guests October 22, 2018 5:44 p.m.
    0
    In a battery discharged “to zero”, in just a couple of hours, the sulfation process begins - coating the plates with lead sulfate. The deeper the sulfation, the less likely that the battery will work at all. So, right after the discharge - charging. Preferably, low currents. If you are not going to go anywhere in the coming days - perfect.
  10. Viktor Fischer
    #16 Viktor Fischer Guests March 17, 2019 2:34 p.m.
    2
    If the battery is discharged to 0 volts, it makes no sense to bother with it, the battery capacity will not be restored to the initial one.
  11. Guest Valery
    #17 Guest Valery Guests April 14, 2019 2:29 p.m.
    0
    After prophylaxis on different machines, the battery worked for me for about 7 years. Then I sold it for 3 kopecks and they say that it worked for another 2 years. Miraculously, the mixture was poured with a measuring plug, 1 measure into each compartment. It was recommended both for old batteries and for new ones.
  12. Peacemaker
    #18 Peacemaker Guests May 5, 2019 11:12 p.m.
    1
    Of course, you can simulate that your battery has risen after recovery, but let's be honest - this is self-deception or a process not worth attention.
    Firstly, you can’t stick a plaster back onto the plates. Will you charge? Yes! But this process is temporary and does not give any result, since if your battery has collapsed, you need to change either the driving style, or the downtime of the car without use, or check the electrician. On another battery again krandets.
    Secondly, there is such a thing - a warranty period. This is not an empty word, since it is in the first year or two that time is given for the manifestation of a lack of acb. Such as a short circuit, open circuit, leakage or low-quality electrolyte.
    Either fool around with charging, heating or restoring batteries, or use the TEM that you have already been provided with, namely, replacing a low-quality battery.

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