Is Lead-acid Battery Recovery Fact Or Fiction?
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- เผยแพร่เมื่อ 30 พ.ย. 2024
- In this video, we are going to check whether it is possible to recover lead acid batteries using the method that has been made in TH-cam about that video or not?
Please stay with us and if you know a better way to recover these batteries, comment for us so that we can use it.
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You should do a video on the desulfurization charger. I've got one I've just started to use on some AGM batteries I will let you know how it works.
You do not need to add more acid. The Sulfur gets deposited on the Lead Plates. This is called Sulfation. You need to make sure that the cells in the battery are covered with DISTILLED WATER. After that you have two options, one is more dangerous than the other. You either need to use very short pulses of high voltage, for example 100 volts for 5 milliseconds, for a period of several hours to several days depending on how large the battery is and how much sulfation has occurred. Or the following dangerous method. YOU CANNOT USE THE AMP METHOD WITH A SEALED BATTERY, IT WILL EXPLODE! YOU MUST ONLY USE THE AMP METHOD WITH THE FILL CAPS REMOVED SO THE GASES CAN ESCAPE BECAUSE ELECTROLYSIS WILL HAPPEN. You need to use high amps instead of voltage to force the sulfur back into solution, for example a CAR BATTERY (12 volts 200 amp hours), you need to use 14 volts-ish and 50 amps up to 200 amps while monitoring the temperature of the battery and how much gas is being produced. You will destroy a smaller battery than a car battery if you use 200 amps! Use your brain.
You must keep the cells below 150 degrees F and make sure the cells are covered with water. Any part of the cell that is not covered in water will not have the sulfur removed because the water is needed to make sulfuric acid and the exposed cell will simply overheat just like any other piece of metal attached to an electrical circuit.
Batteries go down and even die every year especially during winter and rain. Only valid way to revive them is to use a low amp charger and perform a full charge discharge. Nowadays good chargers are available which try to repair batteries and give them a better charge. I have to revive my batteries every this and that time. They get charged easily and surprisingly don’t actually die as people think. Revival of dead batteries is though time consuming endeavour and need patience. They also need to be fully charged and then discharged fully a few times before putting them on actual use. This happens every year so it’s common.
Users as well as merchants both prefer replacing the batteries instead of charging them for restoring. Good luck!!!
You can get volts back, but not amps.
QED!
Your method is wrong. First of all you never wash an AGM battery, simply because this cannot be done. Then, after filling in the cells with distilled water only, you let the battery to stand for a day and absorb the water fully. If there is need you add more water. After that you put the battery in charging process, but with very low amperage. You need to keep tags on the battery. Note the rythm of the voltage rise. This will be very slow anyway. If you try to charge a heavily sulfated battery with high current, you will very soon see that its temperature is getting high, while the voltage across it is not increasing. This is the common indication of a heavily sulfated battery. All the charging energy is transformed (i.e lost) in heat. So the charging current must be slow. For the battery of this video, the current should be constantly limited to about 150mA. In order to achieve this, you need a bench power supply, not a wall pack. Adjust the voltage to a high level until you see the current rising to the desired level (150mA) and then let it stay there no matter if it is high in level (say 25V or even more, for example). As the battery charges, the voltage will drop and it should stay very near to 12V, if all the cells of the battery are still healthy. If, instead, the voltage stays at about 10V, then one cell of the battery is shorted and the battery has almost no chance to recover. The entire process is inherently slow and it needs time and periodical inspection. Do not expect to recover sulfation, which is a cumulative result of long time use, within a few hours. It needs its own time and therefore a lot of patience on one's part. The point is that it works in many cases, depending on the heath status of each battery to be treated. If there are no internal shorts, in most cases the battery can be saved. Keep on charging, until the voltage reaches 14,7 or 15V. Stop the process, when the charging current drops below 100mA. The battery voltage should then drop slowly and stay to 12,7 volts or thereabout.
too much water not enough acid.
you should charge it with the caps open, and should have added suphuric acid.
Not true. The battery already had enough sulfur in solution when it was produced. The sulfur was deposited on the lead plates. Use a search engine. Look up lead acid Desulfate.
try i teaspoon epsom salts per cell
Do not do this. This will get some of the cells to respond for a short time but the battery will be forever ruined because magnesium does not play well in and acid solution with sulfur and lead. You will make compounds that are irreversible while inside of the battery and it will eventually stop working.
Water only dilutes the acid more, epic fail
Not true. The battery already had enough sulfur in solution when it was produced. The sulfur was deposited on the lead plates. Use a search engine. Look up lead acid Desulfate.