📌 Our 60W bidirectional fast charging power bank is built by connecting three 21700 lithium-ion batteries in a pack.
📌 Before assembling the battery pack, we need to perform cell capacity matching for each battery.
📌 Battery capacity sorting(matching), also known as capacity grading, is a technique used in battery manufacturing to ensure that all batteries produced have similar or identical capacity ratings.
📌 This technique is especially important in applications where multiple batteries are used in parallel, as batteries with different capacity ratings can cause uneven charging and discharging, leading to reduced performance and shortened battery life.
🙌 There are various methods for battery capacity sorting, we’ll talk more about that next time.
