2 simple ways to restore the capacity of lead - acid batteries
|2 simple ways to restore the capacity of lead - acid batteries|
Battery recovery- one -
The simplest is a method of multiple charging with a small current with intervals 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 aligned, while the more dense electrolyte from the pores of the plates diffuses into the interelectrode space and reduces the voltage on the battery during the breaks. In the process of cyclic charge, as the battery sets its capacity, the density of the electrolyte increases.
When the density becomes normal for this type of battery, and the voltage on one section reaches 2.5-2.7 V, the charge is stopped.
Multiple charge modes:
Charging current 0.04-0.06 nominal capacity. The time of the first and subsequent charges is 6-8 hours. The break between charges is 8-16 hours. The number of cycles (charge-break) is 4-6 hours.
J charge = 0.04 + 0.06 * Cf.
- 2 -
The method is characterized by high efficiency and efficiency (the battery recovers in less than an hour).
Discharged battery is pre-charged. The electrolyte is drained from a charged battery and washed 2-3 times with water. An ammonia solution of Trilon B (EDTA sodium) containing 2 weight percent of Trilon B and 5 percent ammonia is poured into the washed battery. The time of desulfation solution - 40-60 minutes
The process of desulfation is accompanied by the release of gas and the appearance of small splashes on the surface of the solution. The cessation of gas evolution indicates the completion of the process. In case of strong sulfation, 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.
A flooded battery is charged with charging current to the nominal capacity as recommended in the passport.
For the preparation of the solution, it is necessary to contact the enterprises that have chemical laboratories. Store the solution in a darkened place in a vessel with a hermetic lid to avoid the evaporation of ammonia.