Input voltage: 6.5~29.4V; 5-in-1 display: 1. Shows the battery capacity; 2. Discharge the battery; 3. The battery balancing; 4. Test the battery internal resistance; 5. Test steering. Dimensions: 3.54 in x 3.54 in x 0.71 in (9.0 cm x 9.0 cm x 1.8 cm) Weight: 1.76 oz (50 g)