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There must be a corresponding battery box to ensure that the series connection of the battery is normal, and to facilitate charging with a charger. It has a voltage of 3.7V for one section and 11.1V for three sections in series, and can be used with a 12V charger.

B - Connect the negative pole of the first battery, 3.6V connect the positive pole of the first battery and the negative pole of the second battery, 7.2V connect the positive pole of the second battery and the negative pole of the third battery, and 10.8V connect the positive pole of the third battery; P+is the output positive pole, and P - is the output negative pole.

Lithium battery is a type of primary battery that uses lithium metal or lithium alloy as the negative electrode material and non-aqueous electrolyte solution. It is different from rechargeable batteries such as lithium-ion batteries and lithium-ion polymer batteries. The inventor of lithium batteries was Edison.

B - Connect the negative pole of the first battery, 3.6V connect the positive pole of the first battery and the negative pole of the second battery, 7.2V connect the positive pole of the second battery and the negative pole of the third battery, and 10.8V connect the positive pole of the third battery; P+is the output positive pole, P - is the output negative pole

d: First, connect the three battery cells in series. The negative pole of the entire battery pack is B - connected to the protective board. One connection point from B - is 3.6V connected to the protective board, another connection point is 7.2V connected to the protective board, and the other connection point is 10.8V (B+positive pole of the entire battery pack). P+is the positive pole of the entire battery pack, and P - is the negative pole of the entire battery pack.

Firstly, prepare two 6V batteries with the same voltage and in a fully charged state. If unsure, use a multimeter for measurement;

When measuring with a multimeter, it is necessary to use a DC voltage range of 10V, so that the measured data is more accurate. If it does not meet 6V, it is recommended to replace it;

A series circuit requires the+pole of one battery to be connected to the - pole of another battery to ensure good contact, because the voltage of the series circuit is additive, while the voltage of the parallel circuit remains unchanged;

After connecting, you can use a multimeter to determine. Set the multimeter to the voltage range of 20V and check if the voltage is 12V. If the pointer shakes, tighten the wiring;

In this way, batteries with serial numbers can be used, pay attention to the difference between positive and negative poles, and control the usage time, even when charging.

Series connection means connecting the positive pole to the negative pole and the negative pole to the positive pole. Three in series is 36 volts.

No matter what type of battery, as long as it is of the same type, it can be combined in series and parallel

Series connection, with increased voltage and unchanged capacity

Parallel connection, constant voltage, increased capacity

As you mentioned in the example

9 batteries, 3 in series and 3 in parallel, with an example capacity of 1000mAH and a voltage of 1.2v

If combined, the capacity is three times the battery capacity, 3000mAH; Voltage remains unchanged

If there are three more strings, the voltage will be three times the battery voltage, 3.6v; Capacity remains unchanged

Overall, the voltage of 9 batteries is 3.6V, and the capacity is 3000mAH

(1) The capacity of a battery pack is fixed and unchanging, with nine batteries being 9 times the capacity of one battery

(2) The parallel voltage of the battery remains unchanged, and the series voltage of the battery is added together

A regular battery has a voltage of 1.5V

Three parallel connections are still 1.5V

Then three in series with a voltage of

three × 1.5=4.5 (V)

[OK?]

Connect the positive pole to another negative pole, and then connect the positive pole of this battery to another negative pole, leaving only one positive pole and one negative pole for you to use

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