SSL-JVC75 Capacity (Wh): 7350mAh, 55Wh Maximum Load: Main Connector: 21W/3.5A X-Tap: 20W/3.3ATotal Combined: 41W Dimensions: 3.46" W x 1.93" H x 3.03" D Weight: 0.79 lbs.
SSL-JVC50 Capacity (Wh): 4900mAh, 37Wh Maximum Load: N/A Dimensions: 2.17" W x 2.01" H x 2.99" D Weight: 0.53 lbs.