PowerSmart 3.7V 1100mah PDA Battery for HP iPAQ PE2050X, PE2051 / iPAQ 2200, h2000, h2200, h2210 Series,(Fits selected models only),Compatible Part Numbers:310798-B21, 311949-001, FA110A, Battery Type: Li-ion ||Voltage: 3.70V ||Capacity: 1100mAh ||Color: Black Dimension: 51.75 x 37.05 x 5.65 mm||Weight: 56.70 g Product Type: Replacement Battery ||Condition: 1 year warranty! Genuine Japan LG Brand Grade A cell and premium microchips ensure high quality Please ensure the product(s) that you are going to buy fits the brand, model, part number and dimension (mentioned above) of your device.