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After the batteries are connected in series, the voltage is added together and the currents are equal, which increases the voltage; When batteries are connected in parallel, the voltage remains unchanged (provided that batteries with the same voltage can be connected in parallel, otherwise high voltage will charge low voltage, and if the difference is too large, it may be dangerous). The current is equal to the sum of the batteries, which can often be considered as increasing the battery capacity and providing greater current.

The series voltage of the batteries is equal to the total voltage of the connected batteries. By increasing the voltage, the bulbs are connected in series, and a switch can control all bulbs connected in series on a single line

Connecting pools in series can increase the output voltage. What are the characteristics of connecting light bulbs in series: the sum of the two voltages of each bulb is the total voltage of the circuit

After the batteries are connected in series, the voltage is added together and the currents are equal, which increases the voltage; When batteries are connected in parallel, the voltage remains unchanged (provided that batteries with the same voltage can be connected in parallel, otherwise high voltage will charge low voltage, and if the difference is too large, it may be dangerous). The current is equal to the sum of the batteries, which can often be considered as increasing the battery capacity and providing greater current.

As the voltage increases, the capacity remains unchanged.

The difference between series and parallel connection of batteries:

Battery series connection:

It refers to the battery being connected from end to end. The positive pole of the first battery is connected to the negative pole of the second battery, and the positive pole of the second battery is connected to the negative pole of the third battery, and so on;

The series voltage is equal to the sum of battery voltages, and the current is equal to the current flowing through each battery;

A damaged section of the battery pack can cause the entire battery pack to become unusable or result in a decrease in voltage;

Series connection can increase the total voltage.

Parallel connection of batteries:

It refers to the battery being connected at the beginning and end. That is, the positive poles of all batteries are connected, and the negative poles of all batteries are connected.

The parallel voltage is equal to the voltage of a single battery, and the current is equal to the sum of battery currents.

Although the battery pack's endurance has been enhanced, the damage caused by short-circuit currents is more severe;

Parallel connection can increase the total current.

1. When batteries are connected in parallel, the voltage is equal everywhere, that is, Ua=Ub=Uc=Uo; The current is the sum of the currents of each battery, i.e. Io=Ia+Ib+Ic. (Refer to Figure 1 for the parallel circuit of the battery)

Parallel connection of batteries is suitable for situations where the voltage remains constant and the current needs to increase.

2. When the battery is connected in series, the current is equal everywhere, that is, Io=Ia=Ib=Ic; The voltage is the sum of the voltages of each battery, i.e. Uo=Ua+Ub+Uc. (Refer to Figure 2 for the series circuit of the battery)

Series connection of batteries is suitable for situations where the current remains constant and the voltage needs to be increased.

Whether in series or parallel, the output power of the battery pack increases.

Parallel connection: Several batteries, positive and positive, negative and negative connected side by side, with the same voltage and increased capacity, corresponding to an increase in current. Series connection: Several battery heads and tails are connected together, which is positive and negative. The negative in the first section is connected to the positive in the second section, and so on. As the voltage increases, the capacity remains unchanged. That is to say, if connected in series, the electromotive force is the sum of the electromotive forces of two batteries. If connected in parallel, the voltage they provide to the electrical appliances is only as large as the electromotive force of one battery. I hope my answer can help you! I am also learning this part of the knowledge, it is difficult,

When connected in series, the voltage is the sum of the voltages of two batteries. When connected in parallel, the voltage is equal to the voltage of these two batteries

Series connection increases voltage and parallel connection increases capacity. For example, if you have two 1.5V, 2000mA batteries, series connection results in a 3V, 2000mA battery, and parallel connection results in a 1.5V, 4000mA battery.

1. When batteries are connected in parallel, the voltage is equal everywhere, that is, Ua=Ub=Uc=Uo; The current is the sum of the currents of each battery, i.e. Io=Ia+Ib+Ic. (Refer to Figure 1 for the parallel circuit of the battery)

Parallel connection of batteries is suitable for situations where the voltage remains constant and the current needs to increase.

2. When the battery is connected in series, the current is equal everywhere, that is, Io=Ia=Ib=Ic; The voltage is the sum of the voltages of each battery, i.e. Uo=Ua+Ub+Uc. (Refer to Figure 2 for the series circuit of the battery)

Series connection of batteries is suitable for situations where the current remains constant and the voltage needs to be increased.

Whether in series or parallel, the output power of the battery pack increases.

1. Series connection means that the current remains constant and the voltage is added together; Parallel connection means that the voltage remains constant and the current is added together

2. Although the voltage has not changed, two 12V batteries are connected in series to obtain a higher voltage to adapt to electrical appliances. A current of 10A is required for an inverter with a design value of 12V input, which requires extremely high requirements for switches and wires. Therefore, reducing the current is the main reason, so two batteries need to be connected in parallel. However, the allowed normal discharge current has doubled. If 24V is used, the current is only 5A. Therefore, many places use high-voltage electrical appliances (such as electric vehicles), which is the reason. But there are also some appliances that are originally 12V. When their power (current) is high, the electric motor, in order to increase the working time of the battery or the current of a single battery is not enough to drive, the battery is only 12V, while some electrical appliances have relatively high power.

Two 6V batteries connected in series are 12V, and only two 12V batteries connected in parallel have a voltage of 12V. The so-called parallel connection is when the positive pole is connected to the positive pole and the negative pole is connected to the negative pole.

Two 12V batteries are connected in series to obtain a higher voltage to adapt to electrical appliances. The battery is only 12V, and some appliances have a higher power output, with a current of 10A above 100W. This requires extremely high requirements for switches and wires. If 24V is used, the current is only 5A, so reducing the current is the main reason. Therefore, in many places, high-voltage appliances (such as electric vehicles) are used. However, there are also some appliances that are originally 12V, such as inverters and motors with a design value of 12V input When their power (current) is high, in order to increase the working time of the battery or if the current of a single battery is not enough to drive, two batteries need to be connected in parallel. Although the voltage does not change, the allowed normal discharge current doubles

The main difference between parallel and series batteries is in voltage and capacity. For example, a lithium battery with a voltage of 3.7V and a capacity of 3000mAh has two batteries. If it is in two series, the model of the battery pack is 7.4V/3000mAh. If it is in two parallel, the model becomes 3.7V/6000mAh. When connected in series, the voltage increases while the capacity remains unchanged, while when connected in parallel, the capacity increases while the voltage remains unchanged. But the batteries we often use are all in series and parallel, such as three in series and four in parallel. I hope I can help you.

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