2 simple ways to restore the capacity of lead-acid batteries
|2 simple ways to restore the capacity of lead-acid batteries|
Restoring the capacity of batteries- 1 -
The simplest is a method of multiple charging with a small current with interruptions between charges. By the end of the first and subsequent charges, the voltage on the battery rises, and it ceases to perceive the charge. During the break, the electrode potentials on the surface and in the depth of the active mass of the plates are equalized, while a denser electrolyte diffuses from the pores of the plates into the interelectrode space and reduces the voltage on the accumulator during breaks. In the process of cyclic charge, as the accumulator accumulates capacity, the density of the electrolyte increases.
When the density becomes normal for this type of battery, and the voltage in one section reaches 2.5-2.7 V, the charge is stopped.
Charging current 0.04-0.06 of the nominal capacity. The time of the first and subsequent charges is 6-8 hours. The time between the charges is 8-16 hours. The number of cycles (charge-break) is 4-6 hours.
J rel. = 0,04 + 0,06 * Cn.
- 2 -
The method is characterized by high efficiency and efficiency (the battery is restored in less than an hour).
The discharged battery is precharged. From the charged battery drain the electrolyte and rinse 2-3 times with water. An ammonia solution of Trilon B (ETHYLENDIAMINETETAUXOIC ACID SODIUM) containing 2 weight percent Trilon B and 5 percent Ammonia is poured into the washed battery. The time of desulphation with a solution is 40-60 minutes.
The desulfation process is accompanied by the evolution of gas and the appearance of small sprays on the surface of the solution. The termination of gas evolution indicates the completion of the process. In case of strong sulfation, the treatment with the solution should be repeated.
After treatment, the battery is washed at least 2-3 times with distilled water, then filled with normal density electrolyte.
The filled battery is charged with charging current up to the nominal capacity according to the recommendations in the passport.
On the issue of solution preparation, it is necessary to apply to enterprises that have chemical laboratories. The solution should be stored in a dark place in a vessel with a hermetic lid to avoid evaporation of ammonia.