But the batteries we often use are always connected in both series and parallel circuits, such as: three series and four. When connected in parallel, the capacity will increase while the voltage keep same. When connected in series, the voltage will increase while the capacity does not change. Take an example of a Lithium polymer battery 3.7V 3000mAh, for two of the same LiPo batteries, if it is two cells in series, then the battery pack model is: 7.4V /3000mAh, if it is two cells paralleled, the model will become: 3.7V/6000mAh. The difference between battery parallel and series is mainly the difference in voltage and capacity.ĭifference between battery series and parallels Parallel can increase the total current and capacity. The final voltage is equal to the individual battery voltage and the capacity is equal to the sum of the battery capacity.Īlthough the battery life of the battery pack is enhanced, the damage caused by the short-circuit current is more serious That is, the positive poles of all the batteries are connected together, meantime, the negative poles of all the batteries are connected. It means that the head of the first battery is connected to that of the second battery, and the tail is also connected to that of the second battery. Series connection can increase the total voltage. The voltage after series connection is equal to the sum of each Li-Polymer battery cell voltages, and the capacity is equal to the current flowing through each battery Ī damage in any lithium battery cell will make the entire lithium battery pack unusable or lead to the voltage drop That is, 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 It means that the battery is connected end to end. So what are the differences between them? Battery in series: So that different battery cells can be separately charged without being bothered. In fact, regardless of the difference between the series and parallel connection of the battery, we still have to ensure the consistency of the LiPo battery cells in series and parallel connection. In general, the capacity of new batteries is much higher than that of older batteries. However, It is not easy to replace the “bad” battery, as the old batteries and new ones are not matched to each other. Finally, the “disconnected” battery may interrupt the delivery of current. As long as there is a problem with one of the batteries, its voltage will decrease. It’s like a chain, the more batteries are connected in series, the higher possibility of that will be. Another problem with using a high-voltage battery pack is that it is possible to experience a failure of a certain battery in the battery pack. But the 24V battery is expensive, and it produces more arc on the switch than the 12V battery. Usually we will use 24V and 12V batteries. If a high voltage battery is used, the size of the conductors and switches can be made small. A portable device that requires high power is generally powered by a LiPo battery pack in which two or more lipo battery cells are connected in series.
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