Nemo Grabo Extra Battery This is the extra battery for portable electric vacuum Grabo Technical Specs: Battery Voltage: 14.8V Li-ion; Battery Cell Specification: 2.6 Ah; Rated Power: 16W Dimensions: 3.9×2.8×2.2 inches; Battery Weight: 0.44lbs; Working Temperature: 23° – 140°F Working Time on full charge: 1.5 hours; 2 hour charge time.