3.70V,1100mAh,Li-ion,Hi-quality Replacement Pocket PC Battery for HP iPAQ PE2050X, PE2051, iPAQ h2212e, iPAQ h2215, HP iPAQ 2200, iPAQ h2000, iPAQ h2200, iPAQ h2210 Series , Compatible Part Numbers: 310798-B21, 311949-001, FA110A