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How to calculate how many strings, parallel connections, and battery cells are needed for a set of lithium batteries?

Answer 1: It's very simple. Series connection increases voltage, parallel connection increases capacity. The standard voltage for ternary lithium is 3.7V, full charge is 4.2V, and three series is 12V. 48V requires four triple series, but electric vehicle lead-acid batteries have the most fully charged 58V, so lithium batteries also need to reach about 58V. This requires 14 series to 58.8V, 14 times 4.2. When iron lithium is fully charged, it needs four series of 12V, 48V requires 16 series, and so on. 60V requires 20 series, parallel connection of the same model and capacity, and two 10AH batteries in parallel are 20Ah. 48V ternary lithium requires 14+14 10AH batteries. Finally, 14 parallel connected series batteries make up a 48v20Ah lithium battery

Answer 2: Actually, it's quite simple. For example, 48 volts refers to voltage. Typically, ternary lithium batteries refer to 48 divided by 3.7. Thirteen and fourteen strings are considered 48 volts. Thirteen strings are charged with a 54.6 volt charger, while fourteen strings are charged with a 58.8 volt charger. As for 20 ampere hours, it refers to the capacity of the battery. If a single 18650 cell has a capacity of only 2000 milliamperes, it is 2 ampere hours per cell. If ten cells are combined, it is 20 ampere hours. The entire battery set is 14 strings multiplied by 10 cells=140 cells.

The same goes for 60 volts. Usually, 16-17 strings are considered 60 volts. If it is 60 volts and 20 amperes, the capacity of a single battery cell is 2000 milliamperes, which is 16-17 times 10160-170 cells. You should be very clear when you see this, right

Lithium iron batteries refer to the total voltage divided by 3.2. For example, 48 volts of lithium iron refers to 15-16 series with the same algorithm, but lithium iron has several more series of batteries than ternary lithium. Additionally, the charging voltage of lithium iron and ternary lithium is also different. When purchasing, communicate with the boss more often.

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