Model PDAAX56K, 3.7V / 1050mAh, Lithium Ion, 2 Year Warranty, Fits Audiovox SMT 5600, Dopod 310, Dopod 565, Dopod 566, Dopod 575, Dopod 577W, Dopod 586, Dopod 586W, Dopod ST26C, I-Mate SP3, I-Mate SP3i, O2 ST26B, O2 Xphone II, O2 Xphone IIm, Orange SPV C500. Replaces Audiovox BTR5600B, Dopod CPB-35H00044-00, Dopod ST26B, I-Mate 35H00044-00, I-Mate CPB-35H00044-00, I-Mate HTC098306, I-Mate ST26A, O2 CPB-35H00044-00, O2 ST26A, O2 XDA0201, Qtek 40700102, Qtek CPB-35H00044-00, Qtek HTC098306.