(2200mAh) Replacement for Compaq iPaq External PDA Battery 253514-B21, PE2030, PE2030A, PE2031, PE2031A Replacement for Compaq iPaq External PDA Battery 253514-B21, PE2030, PE2030A, PE2031, PE2031A Compatible with Compaq iPaq 3600, 3630, 3635, 3641, 3650, 3660, 3670, 3700, 3765, 3800, 3900, 5400, 5450, 5455, 5500, ET 5500, ET 5550, ET 5555, H3100, H3600, H3700, H3800, H3830, H3835, H3850, H3870, H3875, H3900, H3950, H3955, H3970, H3975 Li-Polymer, 3.7V, 2200mAh Brand new, one year warranty!