PowerSmart 7.2V 2000mAh Ni-Cd Power Tool Battery for RYOBI HP61K, HP721, HP721K, RY721, RY721K2, HP722, Compatible Part Numbers: 1311145, 1400668 (Only Charge with Ryobi 4400100 AC Adapter.),PSE,TRY023" /> Battery Type: Ni-Cd Voltage: 7.20V (Compatible with 7.40V) Capacity: 2000mAh Color: Black Dimension: 90.80 x 57.50 x 105.00 mm||Rate: 14.00 Wh ||Weight: 506.70 g Remarks: Charge with Ryobi 4400100 AC Adapter. Please ensure the product(s) that you are going to buy fits the brand, model, part number and dimension (mentioned above) of your device.