What is the best sorting method of 26650 lithium-ion battery capacity?

　　Author ：Iflowpower – Portable Power Station Supplier

The 26650 lithium-ion battery capacity sorting method is the most authoritative. Generally, when the battery packs are shipped 26650 lithium-ion batteries, they will be sorted by battery capacity. Each battery manufacturer is also the five paintings, and now investigates multiple cylinders 26650.

Battery sorting process, summarizing the best battery sorting method as follows: 1) The upper cabinet is put on hold 2 min to terminate the voltage, terminate the voltage <2.5V, straight down cabinet into C-file scrapped. 2) 0.

5c (1500mA) constant current discharge, voltage limit 2.0V, time limit 150min; 3) stand for 10 min; 4) 0.1c (300mA) constant current discharge, voltage limit 2.

0V, time limit 60min; 5) 2min; 6) 0.5C constant current charging, voltage limit 3.65V, time limit 150min; 7) 3.

65V constant voltage charging, current cutoff: 0.05c (150mA), time limit 90min; 8) stand 2 min; 9) 0.5c Constant current discharge, voltage limit 2.

0V, time limit 150min; 10) Static 10min; 11) 0.1c constant current discharge, voltage limit 2.0V, time limit 60min; 12) Align 2 min; 13) 0.

5C constant current charging, Voltage limit 3.65V, time limit 60min; my country's battery industry is strongly recommended to master the 26650 lithium-ion battery capacity sorting process as follows: Remarks: 0.5c = 0.

5 * Nominal capacity 0.1c = 0.1 * Nominal capacity 0.

05c = 0.05 * Nominal Capacity (Switch 2+ Step 4) is the residual capacity of the battery, (Step 9+ Step 11) is the actual capacity. Self-discharge detection method = 2 * (Nominal capacity * 0.

5 remaining capacity) / (Step 9+ Step 11) * After the last month is over, the battery cell is active and self-discharge. After 12 hours of step end, fully detect the circuit voltage, internal resistance and group the voltage internal resistance. Sakhes Data Solution Reserved Step 9, 0.

5c (1500mAH) Constant Current Discharge 3.2V Platform Capacity Data, Capacity Demand Demand "= 40%, for example: Step 9, 0.5c (1500mAh) Constant current discharge 3.

2V platform capacity = 1800mAh, step 9 capacity = 3200mAh, calculation method: 1800/3200 = 56%, that is Component Batch of Componses (120PCS), group requirements: 0.5c + 0.1c capacity≥3000mAh voltage≥3.

290V internal resistance≤30 millio, monthly discharge≤10%. Capacity 30mAh, internal resistance±2M, voltage±2MV, self-discharge tolerance±1%. Self-discharge, internal resistance and heavy inspection capacity unqualified battery, according to standard documentation.

The original batch and the re-examination date cannot be paid to the library standard. The battery capacity is affected by temperature. The temperature of less than 22 degrees Celsius should calculate the temperature compensation.