Lk280f eve Gobelpower **Question:** One of the cells is from October? Something to be concerned about? **Answer:** * Yes, Cell #12 has a production date of **31 Oct 2024**, while the others are from **late December 2024**. * Difference in age: about **2 months**. * Difference in voltage: - October cell: **3.2522 V** - Average of others: **~3.2437 V** - Difference: **0.0085 V (8.5 mV)** * Conclusion: - **Not a concern**. This voltage difference is very small. - Cell resistance and voltage are similar to the rest. - If stored properly, a 2-month difference is negligible. - → Safe to include in the battery pack. **Question:** What is the difference between the lowest and highest cell? **Answer:** * Cell voltages: [3.2450, 3.2437, 3.2431, 3.2441, 3.2423, 3.2437, 3.2430, 3.2431, 3.2419, 3.2434, 3.2425, 3.2522, 3.2423, 3.2437, 3.2435, 3.2437] * Highest voltage = **3.2522 V** (Cell #12) * Lowest voltage = **3.2419 V** (Cell #9) * Voltage difference = **3.2522 V - 3.2419 V = 0.0103 V (10.3 mV)** * This is an **excellent result**. Most BMS tolerate up to 30–50 mV difference before balancing is needed. * → **No balancing required at this point.** ^ # ^ Voltage (V) ^ Resistance (mΩ) ^ Model ^ Full ID ^ Manufacturer ^ Product Type ^ Battery Type ^ Capacity ^ Voltage ^ Production Date ^ | 1 | 3.2450 | 0.20 | LF280K | 04QCB76L10003LECT0001385 | EVE Power | Battery Cell | LiFePO₄ | 280Ah | 3.2V | 26 Dec 2024 | | 2 | 3.2437 | 0.20 | LF280K | 04QCB76L10003LECS0007798 | EVE Power | Battery Cell | LiFePO₄ | 280Ah | 3.2V | 25 Dec 2024 | | 3 | 3.2431 | 0.20 | LF280K | 04QCB76L10003LECS0003780 | EVE Power | Battery Cell | LiFePO₄ | 280Ah | 3.2V | 25 Dec 2024 | | 4 | 3.2441 | 0.20 | LF280K | 04QCB76L10003LECT0003631 | EVE Power | Battery Cell | LiFePO₄ | 280Ah | 3.2V | 26 Dec 2024 | | 5 | 3.2423 | 0.20 | LF280K | 04QCB76L10003LECR0000005 | EVE Power | Battery Cell | LiFePO₄ | 280Ah | 3.2V | 24 Dec 2024 | | 6 | 3.2437 | 0.20 | LF280K | 04QCB76L10003LECP0008386 | EVE Power | Battery Cell | LiFePO₄ | 280Ah | 3.2V | 23 Dec 2024 | | 7 | 3.2430 | 0.20 | LF280K | 04QCB76L10003LECR0001920 | EVE Power | Battery Cell | LiFePO₄ | 280Ah | 3.2V | 24 Dec 2024 | | 8 | 3.2431 | 0.20 | LF280K | 04QCB76L10003LECS0005132 | EVE Power | Battery Cell | LiFePO₄ | 280Ah | 3.2V | 25 Dec 2024 | | 9 | 3.2419 | 0.18 | LF280K | 04QCB76L10003LECR0005666 | EVE Power | Battery Cell | LiFePO₄ | 280Ah | 3.2V | 24 Dec 2024 | | 10 | 3.2434 | 0.20 | LF280K | 04QCB76L10003LECS0002450 | EVE Power | Battery Cell | LiFePO₄ | 280Ah | 3.2V | 25 Dec 2024 | | 11 | 3.2425 | 0.19 | LF280K | 04QCB76L10003LECR0001916 | EVE Power | Battery Cell | LiFePO₄ | 280Ah | 3.2V | 24 Dec 2024 | | 12 | 3.2522 | 0.20 | LF280K | 04QCB76L10003LEA00000443 | EVE Power | Battery Cell | LiFePO₄ | 280Ah | 3.2V | 31 Oct 2024 | | 13 | 3.2423 | 0.19 | LF280K | 04QCB76L10003LECS0001420 | EVE Power | Battery Cell | LiFePO₄ | 280Ah | 3.2V | 25 Dec 2024 | | 14 | 3.2437 | 0.18 | LF280K | 04QCB76L10003LECS0006474 | EVE Power | Battery Cell | LiFePO₄ | 280Ah | 3.2V | 25 Dec 2024 | | 15 | 3.2435 | 0.19 | LF280K | 04QCB76L10003LECS0006478 | EVE Power | Battery Cell | LiFePO₄ | 280Ah | 3.2V | 25 Dec 2024 | | 16 | 3.2437 | 0.19 | LF280K | 04QCB76L10003LECS0006627 | EVE Power | Battery Cell | LiFePO₄ | 280Ah | 3.2V | 25 Dec 2024 | ^ # ^ Voltage (V) ^ Resistance (mΩ) ^ Model ^ Serial ^ Code ^ | 1 | 3.2450 | 0.20 | LF280K | 04QCB76L10003L | ECTD001385 | | 2 | 3.2437 | 0.20 | LF280K | 04QCB76L100031 | ECS0001798 | | 3 | 3.2431 | 0.20 | LF280K | 04QCB76L10003L | ECS0001780 | | 4 | 3.2441 | 0.20 | LF280K | 04QCB76L10003L | ECTD003631 | | 5 | 3.2423 | 0.20 | LF280K | 04QCB76L10003L | ECR0000005 | | 6 | 3.2437 | 0.20 | LF280K | 04QCB76L100031 | ECP0008386 | | 7 | 3.2430 | 0.20 | LF280K | 04QCB76L10003L | ECR0001920 | | 8 | 3.2431 | 0.20 | LF280K | 04QCB76L10003L | ECS0005132 | | 9 | 3.2419 | 0.18 | LF280K | 04QCB76L10003L | ECR0005666 | | 10 | 3.2434 | 0.20 | LF280K | 04QCB76L100031 | ECS0002450 | | 11 | 3.2425 | 0.19 | LF280K | 04QCB76L10003L | ECR0001916 | | 12 | 3.2522 | 0.20 | LF280K | 04QCB76L10003L | EA00000443 | | 13 | 3.2423 | 0.19 | LF280K | 04QCB76L100031 | ECS0001420 | | 14 | 3.2437 | 0.18 | LF280K | 04QCB76L100031 | ECS0006474 | | 15 | 3.2435 | 0.19 | LF280K | 04QCB76L10003L | ECS0006478 | | 16 | 3.2437 | 0.19 | LF280K | 04QCB76L10003L | ECS0006627 | ^ # ^ Voltage (V) ^ Resistance (mΩ) ^ Model ^ Full ID ^ Manufacturer ^ Product Type ^ Battery Type ^ Nominal Capacity ^ Nominal Voltage ^ Production Date ^ | 1 | 3.2450 | 0.20 | LF280K | 04QCB76L10003LECT0001385 | | | | | | | | 2 | 3.2437 | 0.20 | LF280K | 04QCB76L10003LECS0007798 | | | | | | | | 3 | 3.2431 | 0.20 | LF280K | 04QCB76L10003LECS0003780 | | | | | | | | 4 | 3.2441 | 0.20 | LF280K | 04QCB76L10003LECT0003631 | | | | | | | | 5 | 3.2423 | 0.20 | LF280K | 04QCB76L10003LECR0000005 | | | | | | | | 6 | 3.2437 | 0.20 | LF280K | 04QCB76L10003LECP0008386 | | | | | | | | 7 | 3.2430 | 0.20 | LF280K | 04QCB76L10003LECR0001920 | | | | | | | | 8 | 3.2431 | 0.20 | LF280K | 04QCB76L10003LECS0005132 | | | | | | | | 9 | 3.2419 | 0.18 | LF280K | 04QCB76L10003LECR0005666 | | | | | | | | 10 | 3.2434 | 0.20 | LF280K | 04QCB76L10003LECS0002450 | | | | | | | | 11 | 3.2425 | 0.19 | LF280K | 04QCB76L10003LECR0001916 | | | | | | | | 12 | 3.2522 | 0.20 | LF280K | 04QCB76L10003LEA00000443 | | | | | | | | 13 | 3.2423 | 0.19 | LF280K | 04QCB76L10003LECS0001420 | | | | | | | | 14 | 3.2437 | 0.18 | LF280K | 04QCB76L10003LECS0006474 | | | | | | | | 15 | 3.2435 | 0.19 | LF280K | 04QCB76L10003LECS0006478 | | | | | | | | 16 | 3.2437 | 0.19 | LF280K | 04QCB76L10003LECS0006627 | | | | | | |