
| Büttner MT MPP | MT MPP170 | MT MPP260 | MT MPP440 |
| Battery voltage | 12V | 12V | 12V |
| MPPT | ja | ja | ja |
| External display | display option | display option | display option |
| PV power 12V | 170W | 260W | 440W |
| PV power 24V | N/A | N/A | N/A |
| Maximum charging current solar | 11A | 16A | 25A |
| Rated load current battery | 12/1A | 18/1A | 31/1A |
| PV open circuit voltage | 50V | 50V | 50V |
| Efficiency | 98% | 98% | 98% |
| Charging method | multi-stage | multi-stage | multi-stage |
| Weight | 0.3kg | 0.3kg | 0.3kg |
| Dimensions | 130X77X40mm | 130X77X40mm | 130X77X40mm |
| Connections | 6mm2/AWG10 | 6mm2/AWG10 | 6mm2/AWG10 |
| Lithium-ion battery | adjustable | adjustable | adjustable |
| Büttner MT | MT 150 PP | MT 230 PP | MT 350 PP | MT 559 PP |
| Battery voltage | 12V | 12V | 12V | 12V |
| PWM | yes | yes | yes | yes |
| External display | display option | display option | display option | display option |
| PV power max. 12V | 150W | 230W | 350W | 550W |
| PV power max. 24V | N/A | N/A | N/A | N/A |
| Maximum charging current solar | 9.5A | 16A | 25A | 35A |
| Nominal charging current battery | 9/0.8A | 15/0.8A | 21/1.5A | 33/1.5A |
| PV open circuit voltage | 28V | 28V | 28V | 28V |
| Efficiency | PWM | PWM | PWM | PWM |
| Charging method | multi-stage | multi-stage | multi-stage | multi-stage |
| Weight | 0.3kg | 0.3kg | 0.3kg | 0.3kg |
| Dimensions | 130X77X40mm | 130X77X40mm | 130X77X40mm | 130X77X40mm |
| Connections | 6mm2/AWG10 | 6mm2/AWG10 | 6mm2/AWG10 | 6mm2/AWG10 |
| Lithium-ion battery | ajustable | ajustable | ajustable | ajustable |