FSA 45
| CUTTING WIDTH | 23 cm (9″) |
| WEIGHT (w/ Integrated Battery)* | 2.3 kg (5.1 lbs.) |
| POWER SOURCE | Battery |
| BATTERY SERIES | AI Series |
| RUN TIME (w/ Integrated Battery) | W/ STIHL PolyCut™ blade: Up to 20 min. W/ Round Quiet Line .065″: Up to 12 min. |
| CHARGE TIME | 210 minutes |
FSA 57
| CUTTING WIDTH | 280 mm (11”) |
| WEIGHT* | 2.7 kg (5.9 lbs.) |
| WEIGHT* (w/ Recommended Battery) | w/ AK 10 3.5 kg (7.7 lbs.) |
| POWER SOURCE | Battery |
| BATTERY SERIES | AK Series |
| RUN TIME (w/ AK 10) | Up to 25 minutes |
FSA 90 R
| CUTTING WIDTH | 38 cm (15″) |
| WEIGHT* | 2.8 kg (6.2 lbs.) |
| WEIGHT* (w/ Recommended Battery) | w/ AP 300 4.5 kg (9.9 lbs.) |
| POWER SOURCE | Battery |
| BATTERY SERIES | AP Series |
| RUN TIME (w/ AP 100) | Up to 10 Minutes |
| RUN TIME (w/ AP 300) | Up to 30 Minutes (Recommended combination) |
| RUN TIME (w/ AR 1000) | Up to 80 Minutes |
| RUN TIME (w/ AR 2000) | Up to 120 Minutes |
| RUN TIME (w/ AR 3000) | Up to 150 Minutes |