marine maintenance free batterys
Marine maintenance-free battery is a valve-regulated lead-acid battery that does not need to be filled with electrolyte. It has the advantages of small size, light weight, long life, and simple maintenance. Marine maintenance-free batteries should pay attention to these places:
When the battery is in operation, the charging equipment should be checked frequently, and the battery cannot be kept in an overcharged or undercharged state for a long time. Both states reduce battery life and capacity
When sailing in cold sea areas or when the temperature is below zero degrees Celsius, the battery should be charged with a small current every day to keep the battery at a normal temperature, or increase the specific gravity of the electrolyte appropriately to avoid freezing and cracking
The maintenance-free battery (lead-acid battery) is maintained according to the requirements of the product manual. The charging current and voltmeter (multimeter) can be used to judge the working condition of the battery. This kind of battery generally has a color-changing power indicator ball. In actual use, the indicator ball often gets stuck, and the battery can be restored to normal by shaking the battery.
Pay attention to the equalization charging time control to prevent overcharging
During the charging process, check and measure the respective voltages of the two batteries connected in series. If there is a large difference, it indicates that one of the batteries has been seriously aged or there is a short circuit in the plates.
During the discharge process of the battery, the termination voltage will change greatly under different discharge rates and temperatures. Large discharge current can allow a lower value of the discharge termination voltage, and a small current discharge requires a higher value of the termination voltage. As the temperature drops, the battery capacity decreases, and the termination voltage should increase accordingly
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