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Charging LFP–LTO cell by the TENG with different transformers.
| Transformer coil ratio n | Current amplitude [mA] | Voltage amplitude [V] | Charging time [min] | Discharging capacity [mAh] | Charging power [mW] | Power utilization efficiency [%] |
|---|---|---|---|---|---|---|
| 1.0 | 2.0 ± 0.07 | 391.4 ± 1.8 | 125 | 1.1 | 2.4 ± 0.08 | 1.2 ± 0.04 |
| 6.1 | 11.6 ± 0.4 | 61.9 ± 0.4 | 125 | 12.9 | 16.1 ± 0.6 | 8.4 ± 0.3 |
| 24.4 | 48.4 ± 1.2 | 15.4 ± 0.1 | 23 | 10.7 | 76.9 ± 1.9 | 40.1 ± 1.0 |
| 36.7 | 73.5 ± 0.9 | 9.2 ± 0.4 | 10 | 9.3 | 139.0 ± 1.7 | 72.4 ± 0.9 |
