Replacement RYOBI 1400668 1311145 Battery For RYOBI HP721, RY721K2,HP61K, RY721, HP721K Drill/Driver (1700mAh Ni-Cd 7.2V (Compatible with 7.40V) Black 11.00 Wh Charge with Ryobi 4400100 AC Adapter) Remarks: Only Charge with Ryobi 4400100 AC Adapter. Voltage: 7.20V Color: Black Dimension: 90.80 x 57.50 x 105.00 mm Please ensure the product(s) fits the brand, model, part number and dimension of your device.