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| Model | KT1205 | KT1210 | KT1215 | KT1220 |
| Rated charging current | 5A | 10A | 15A | 20A |
| Rated discharging current | 5A | 10A | 15A | 20A |
| Short-current protection | 25A | 25A | 25A | 25A |
| System voltage | 12V/24V Auto adapt | |||
| Over current protection | <1.3 maintain for 60s <1.6 maintain for 5s >1.6 shut down immediately |
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| Stand-by lost | <5mA | |||
| Charge voltage drop | ≤0.26V | |||
| Discharge voltage drop | ≤0.15V | |||
| Max solar panel votlage | 21V | |||
| Operating temperature | -35ºC to +55ºC | |||
| Equalize charging voltage | 14.8V | |||
| Bulk charging voltage | 14.5V | |||
| Acceptance charging voltage | 14.2V | |||
| Float charging | 13.8V | |||
| Charge return voltage | 13.2V | |||
| Discharge stop voltage | 11.2V | |||
| Discharge return voltage | 12.6V | |||
| Temperature compensation | N/C | |||
| Control mode | PWM( Pulse Width Modulation ) | |||
| Maximum wire size | 12AWG | |||
| Dimensions / Weight | 140×90.5×28.5mm / 210g | |||