| Model | BS21-CSC-S(P) |
| Power | 21W |
| Max Working Voltage (Vmp) | 5V |
| Max Operating Current(Ipm) | 4.2A |
| Open Circuit Voltage (Voc) | 6V |
| Short Circuit Current (Isc) | 4.6A |
| Product Size | Folded Size:303*175*26mm,Unfolded Size:500*303*15mm |
| Weight | 0.58Kg |
| Solar Cell | Sunpower |
| Efficiency | 21% |
| Tolerance | 0~+3% |
| Construction | Surface PET,EVA,Backboard PCB |