See youtube video for demonstration of good performance of the SNT2100 (dual 5.0AH) on a steep (6%) long (100 yard) driveway with dense snow. Includes a comparison with conventional gas powered 2-phase tractor-based blower. Unit blew approximately 7500 pounds of snow on one charge. Each battery recharged in 40 minutes. The snow density was about 142 kg/cubic meter (light snow is ~50kg/cubic meter).