Maintenance-free battery repair method

by:Power Kingdom     2021-07-16

In the impression of many friends, maintenance-free batteries do not require maintenance. In fact, this idea is wrong. Maintenance-free batteries can effectively extend the service life, and they need to be worthy of friends. Note that maintenance-free batteries also need to be filled with water. It is generally stipulated that maintenance-free batteries should be filled with water after 1 year of use, so as to ensure that the battery has been kept in a sufficient state.

Maintenance-free battery repair method

1. Receive the battery and make a record, ask about the situation, and label it.

2. Make a repair record and measure the open circuit voltage.

3. For the battery in normal use, the voltage should not be lower than 11 volts. If it is lower than 11 volts, there is a possibility of disconnection. Such as long-term storage of batteries can be. If the battery is higher than 9 volts, you can charge it first, if the battery is lower than 9 volts, add water first to repair, and then charge when the voltage is higher than 9 volts.

4. If the battery becomes hot during charging. It shows that the battery plate is softened. Such as slight battery softening can be repaired, severe softening cannot be repaired. Slight heating can stop charging and wait for the temperature to drop before charging.

5. Perform capacity test after fully charged. During the test, the battery cell can be measured. The positive electrode of the multimeter is connected to the positive electrode of the battery and the negative electrode is connected to the tin bar.

(Insert the tin bar into the first cell) The measured voltage is the first cell A voltage lower than 1 volt indicates that the grid is broken. The normal voltage should be above volts. If the battery is broken, it cannot be repaired.

6. How to measure the voltage of a single cell 'cut two tin bars, starting from the battery positive and negative poles closest to the cell, use a multimeter to connect the positive pole of the battery, and the negative pole to the tin strip (insert the tin The voltage measured in the first cell is the voltage of the first cell. Then connect the positive pole of the multimeter to the tin bar in the first cell and the negative pole to the tin bar in the second cell. The measured voltage is the second cell voltage. By analogy, the third, fourth, fifth, and sixth cell voltage measurement method is the same as that of the second cell voltage. Note: For single-cell voltage measurement, the value measured when the power is almost discharged is the most accurate.

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