button battery cr1620.Water battery repair technology

　　Water battery repair technology provided by electronic enthusiasts, water battery repair technology 1. Capacity reduction fault characteristics: the rated capacity cannot be reached in the tenth cycle;

　　Water battery repair technology 1. Capacity reduction

　　Fault characteristics: The rated capacity cannot be reached in the tenth cycle; the capacity gradually decreases; the capacity suddenly decreases; the battery efficiency is very poor; the bubbling is not violent before charging. Possible reasons: insufficient initial charging or long-term insufficient charging; low specific gravity and low temperature of the electrolyte; impurities in the electrolyte after being used for a long time; vulcanization of the plates and high resistance of the separator; internal or external short circuit; the positive plate has been damaged and the negative plate has shrunk. ; After long-term floating charging without discharge, the active material condenses and the electrode plate becomes passivated. Treatment methods: Balance the charge and correct the operating method; adjust the electrolyte specific gravity and room temperature; clean the battery; check the electrolyte and replace it if necessary; eliminate sulfuration. If necessary, over-discharge and over-charge once, and then discharge regularly.

　　2. Abnormal voltage

　　Fault characteristics: low open circuit voltage or low voltage during charging and discharging; the voltage is too high during charging, and the voltage drops quickly during discharging; possible causes: internal or external short circuit; backward battery not corrected in time causing reverse polarity; plate vulcanization or joint contact Defective; a large amount of powder has come off the electrode plate or the positive plate has been broken; long-term floating charging without discharge, active material condensation, and plate passivation. Treatment methods: Eliminate short circuits and vulcanization; check that the joints are tightened or welded; recharge to avoid recurrence; over-discharge and over-charge if necessary, and discharge regularly in the future.

　　3. Abnormal gas generation

　　Fault characteristics: small amount of air emitting; a few do not emit air; air emit too early (except tubular type); air emit during discharge; atmospheric air emit during float charging. Possible reasons: the charging current is too small, too large or not sufficient; internal short circuit; the plate is vulcanized; discharge without leaving it aside after charging, there may be impurities in the electrolyte. Treatment method: Correct the current value and continue charging; eliminate the short circuit; leave it for about an hour before discharging after charging; check the electrolyte and replace it if necessary.

　　4. Abnormal specific gravity of electrolyte

　　Fault characteristics: The specific gravity of the electrolyte increases little or remains unchanged during charging; the specific gravity of the electrolyte decreases during float charging; the specific gravity of the electrolyte decreases too much when shelved; the specific gravity of the electrolyte decreases too much when discharging; the upper and lower layers of electrolyte have different proportions during long-term floating . Possible reasons: There may be impurities in the electrolyte; the floating charge current is too small; self-discharge or leakage; the plate is vulcanized; long-term insufficient charging; too much water is added or concentrated sulfuric acid is added without mixing. Treatment methods: Check the electrolyte and replace it if necessary; increase the float current; clean the battery; eliminate sulfuration; balance the charge and improve the operating mode; adjust the acid proportion 2 hours after the end of charging; charge if the proportion of the upper and lower layers is different.

　　5. Abnormal electrolyte temperature

　　Fault characteristics: The electrolyte temperature does not drop before initial charging; the electrolyte temperature rises during normal charging and discharging. Possible reasons: the negative plate has been oxidized; the current is too large or internal short circuit during charging; the ambient temperature is too high; the plate is vulcanized. Treatment method: If the temperature is not cooled after pickling, it is advisable to charge with a small current; reduce the normal charging current or eliminate short circuit; lower the ambient temperature; eliminate vulcanization.

　　6. The electrolyte is unclear

　　Fault characteristics: ① Reddish-brown turbidity: the positive active material "falls off" or is "free". ② Blue-gray (blackish) turbidity: Commonly seen when the negative electrode is loose due to alloy, and its composition is a mixture of lead sulfate and negative electrode additives. ③ Black paste in a single cell: organic matter falls in; treatment method: replace the electrolyte when impurities are excessive.

　　7. The plate is white

　　Fault characteristics: The capacity decreases and the specific gravity decreases, and the precipitate is white; the voltage at the initial and final stages of charging is higher than 2.85V; the voltage drops quickly during discharge; bubbling occurs soon after charging or even when not charging; the temperature of the electrolyte rises, and the surface of the electrode plate Hard and rough; there are white crystals on the back beam of the plate or white spots on the surface of the plate or even the entire surface is white. Possible reasons: high concentration or impure electrolyte; low electrolyte level, exposing the plates; vulcanization of the plates; initial charging or frequent undercharging; failure to charge on time or long-term undercharging; frequent overdischarge; long-term semi-discharge or discharge. status. Treatment methods: Reduce the electrolyte concentration; replenish the electrolyte; eliminate sulfation; perform an over-discharge and overcharge if necessary.

　　8. Contact damage

　　Fault characteristics: The connecting strip or pole is melted; cracks are found in the connecting strip or pole, desoldering or corrosion; the connecting strip or pole is heated; the voltage is low, the current is small, or even none. Possible reasons: charging or discharging current is too large; poor welding; short circuit; corrosion by electrolyte; poor manufacturing quality. Treatment method: weld or replace; scrape off corrosion and apply Vaseline oil layer for protection; eliminate short circuit and clean battery

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