1. Connect the positive electrode of the battery to the positive electrode of the power supply, and the negative electrode of the battery to the negative electrode of the power supply.
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2, the initial charge is divided into two stages: first, the initial charge current is charged to the electrolyte to release bubbles, and the single cell voltage rises to 2.3-2.4V. Then the current is reduced to 1\/2 of the initial charging current, and continues to charge until the electrolyte releases violent bubbles, and the ratio and voltage remain stable for 3h. The full charging time is about 45-65h.
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The temperature is controlled at 35-40 ° C, and when the initial charge is completed, if the specific gravity of the electrolyte is not specified, the application of distilled water or electrolyte with a specific weight of 1.4 is adjusted. Charge 2h after adjustment until the proportion meets the requirements.
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3, the new battery is often unable to reach the capacity after the first charge, should be discharged cycle. Discharge with 20h discharge rate (that is, discharge the rated capacity of 1\/20 of the current to the single cell voltage to 1.75V), and then add the charging current until sufficient, after a charge, discharge cycle if the capacity is still lower than 90% of the rated capacity, should be a charge, discharge cycle.
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4, pay attention to how to judge whether the new car battery is charged, judge the new battery is charged trilogy:
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5, if the electrolyte " Be boiling; At the same time, bubbles appear, then it indicates that the charge is complete.
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6, Measure the voltage value of the single cell battery, if the voltage does not fluctuate within 3 seconds, up to 2.7V, then it indicates that the charging is complete.
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7, measure the relative density of the electrolyte, if the density no longer fluctuates within 3h, up to the maximum, then the charge is complete.