| Model | BT-540K-S | BT-545K-S | BT-555K-S | BT-560K-S |
| Rated Maximum Power at | 540W | 545W | 555W | 560W |
| Open Circuit Voltage(Voc/V) | 49.60 | 49.75 | 49.90 | 50.05 |
| Maximum Power Voltage(Vmp/V) | 41.64 | 41.80 | 41.96 | 42.12 |
| Short Circuit Current(Isc/A) | 13.86 | 13.93 | 14.00 | 14.07 |
| Maximum Power Current(Imp/A) | 12.97 | 13.04 | 13.11 | 13.18 |
| Model Efficiency | 21.1 | 21.3 | 21.5 | 21.7 |
| Standard Test Condition(STC) | Irradiance 1000w/m2, Cell Temperature 25 Centigrade, Air Mass 1.5 | |||