The use of a single battery cell cannot meet the real needs of most customers. At this time, PACK is required. PACK is a very important part of the lithium battery industry, because only through PACK can we finally produce battery packs that can meet the different capacity needs of different customers.

　　The pack process requires parallel and series connection of batteries, so how should we understand the series and parallel connection of lithium batteries?

　　Connecting multiple lithium batteries in parallel will not change the output voltage of the lithium battery pack, but can increase the capacity of the lithium battery pack.

　　Connecting multiple lithium batteries in series will not change the rated capacity of the lithium battery pack, but can increase the output voltage of the lithium battery pack.

　　Combining the two methods of series and parallel can obtain high-voltage, high-capacity lithium battery packs.

　　The parameters of series and parallel should be selected according to the actual situation. Do not connect too many lithium batteries in series and parallel in pursuit of higher voltage and capacity.

　　Lithium-ion battery (LIB) has become the main energy storage solution in modern social life. Among them, lithium iron phosphate batteries are a perfect replacement for lead-acid batteries, and they are the first choice for grid-connected peak shaving, off-grid energy storage, photovoltaic energy storage, UPS, data center and other industries.