How do you know lead-acid battery has been fully charged?

How do you know lead-acid battery has been fully charged? This can be seen by the charging current, or it can be seen through the observation hole of the maintenance-free battery.

It can't be distinguished by the naked eye. Use a multimeter to measure it. As long as the voltage is above 12.5 volts, it is basically full. There is a window on the battery to observe whether the battery is good or bad. As long as the green battery inside the window is good, it will change the battery when it turns black.

Lead-acid battery can provide power is the most important components of positive and negative plate message solution liquid. Battery has liquid suppository, mouth plug function for gas produced during the discharge charge and replenish water, determination of proportion.

Generally accurate measurement by measuring the proportion of basic confirm whether full, battery fluid density and the battery status:

1, plenty of battery: 1.2750-1.285;

2, put the power of 30%, 1.170 to 1.190

3, put the power of 100%, 1.050 to 1.070.

If it is a maintenance-free battery (no liquid port plug, basically do not need to add distilled water in the service life), you need to determine whether it is full according to the form of floating charge voltage. The battery has a nominal voltage of 12V. In the state of acid battery single voltage 13.5 - 14.5V can be considered that the battery is fully charged (inaccurate), the open circuit measurement voltage will basically reach 16-17V, at this time the battery is considered full.

It can be charged. The so-called maintenance-free battery means that it does not need maintenance during the use. It does not need to add electrolyte frequently. The other uses are not different from the general battery. As for charging, there is no need to deflate the battery. It was designed at the time, there is a small hole for exhausting, and it is usually placed inside the car. As long as the engine is started, the battery is always charged. In addition, the battery needs to be disassembled and charged. It is best to use a special battery charger to avoid damage to the battery. If your car battery is used for one month, it will be considered. If the car is out of power, there is a shortage of power generation, or no Power generation, typically engine damage or damage to the silicon rectifier. It is recommended to check to avoid the long life of the new battery due to long-term power loss. Charging time after maintenance-free battery is depleted: 20 hours.

Such as 12V 60ah charging ways: using constant voltage current-limiting charging in the form of constant voltage 14.8V, 15A charging current limiting 16 hours to 4 hours 3A constant current charge, a total of 20 hours.

Expanding data

The accumulator principle:

The principle of charging is charger voltage higher than the battery voltage, to charge, the electric potential difference between them, the greater the charge the faster, the greater the charging current.

So the average voltage of 24 v battery charger (light) as the largest 28 v, and the output of the 60 is a full load current, and when you charging, the charger has a load, when the voltage of battery was charging voltage, 40 for the charging current of a current, the current will be done as the charge is smaller and smaller. In addition, the size of the charging current and the capacity of the battery size is also related.

Battery is serious deficient electric need to replenish the electricity, the amount of charge on the car itself is completely not enough, can only use a portable charger to recharge the battery, automobile starting batteries for 20 hours.

Such as 12 v60ah charging ways: using constant voltage current-limiting charging in the form of constant voltage 14.8 V, 15 a charging current limiting 16 hours to 4 hours 3 a constant current charge, a total of 20 hours.

The battery is fully charged and can be judged according to the following phenomena:

1) A large number of bubbles are generated in the battery, and there is a phenomenon of "boiling";

2) The terminal voltage rises to the maximum value and does not rise within two hours;

3) The electrolyte rises to the highest position and does not rise for two hours.

Or observe the electric eye, the full power state can be judged from the green of the electric eye.

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