Replacement Li-ion Battery (850mAh) for Dell Axim X3 / X3i / X30 Dell PDA Battery Type: Li-Ion Volts/AmpH: 3.7V 1700mAh This replacement is designed for Dell Axim X3, X3i, X30 PDA Battery Part No. 310-4263, F2751, W1359, X1111 Brand new, 1 year warranty!