Battery for HP iPaq H5100, H5400, H5450, H5455, H5500, H5550, H5555 (1400 mAh) Volts/AmpH: 3.7V 1400mAh Replacement for Compaq iPaq H5100, H5400, H5500 PDA Battery Part No. 290485-B21 Brand new, 1 year warranty!