Manual log data
| log_time | Voltage (V) | display_scale |
| 0:43 | 4.1 | 100% |
| 10:30 | 3.86 | 75% |
| 12:00 | 3.83 | 75% |
| 13:50 | 3.81 | 75% |
| 15:50 | 3.78 | 50% |
| 17:00 | 3.76 | 50% |
| 22:30 | 3.75 | 50% |
Nomalised data with interpolation of the time axis
prelim-conclusion
1) the capacity of the Li-ion cell is able to confirm to directly proportional to lasting of service time
2) expect a cut off voltage about 3.6V
3) voltage decay under load is expected non-linear at whole capable supply range
4) quick charger with higher-C is not benefiting the cell performance in term of time of discharge or supply voltage unless over charge the cell without aware offset the cell life
precaution
protection circuitry of the Li-ion battery is prone to damage once the discharge current exceeds the limit from time to time, but the Li-ion cell itself will has no permanent damage. Beware the over charge, over discharge and any safety issue with Li-ion battery usage.
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