HQRP Li-Polymer 290483-B21 Battery compatible with HP iPaq 5100 5150 5400 5450 5455 5500 5550 5555 51xx 54xx 55xx PDA Models Replacement plus HQRP Universal Screen Protector HQRP&reg; PDA Battery plus HQRP&reg; Universal Screen Protector; 1500 mAh High Capacity, 3.7V, with Longer Runtime; Li-Polymer Rechargeable Internal Battery; 100% compatible with original batteries and chargers; 200 days warranty!