Detailed explanation of charging methods for maintenance-free lead-acid batteries with different voltages

by:Power Kingdom     2021-06-19
Label: The capacity and life of maintenance-free lead-acid batteries are affected by parameters such as charging voltage and ambient temperature. Therefore, an important principle for using such batteries is to use the correct charging method. The charging method depends on the state of the battery. There are usually two states, namely, CYCLIC USE (as the main power supply) and FLOAT USE (as a backup power supply). The corresponding charging methods are shown in the following table (C in the table is the battery) The rated capacity): charging method\application cycle use floating charge use constant voltage charging charging voltage range 6V battery: 7.25-7.45V 12V battery: 14.5-14.9V initial current (A): ≤0.30, the best 0.10 charging voltage range 6V battery : 6.8-6.9V 12V battery: 13.6-13.8V 2V battery: 2.23-2.28V Initial current (A): ≤0.30, the best 0.10 The above table is that the charging voltage refers to the ambient temperature of 25 ℃, when the ambient temperature occurs When a large change occurs, the charging voltage should be adjusted accordingly. The method is: for every 1℃ increase in the ambient temperature, the charging voltage will decrease by 0.003V/cell; for every 1℃ decrease in the ambient temperature, the charging voltage will increase by 0.003V/cell; If the change exceeds 10°C without correcting the float voltage, the lead-acid battery may be damaged. The working environment temperature of the battery should be controlled within the range of 20-25°C (it is recommended to install in an air-conditioned room).
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