Hitech - Pocket PC Phone Battery Replacement battery for i-MATE Pocket PC, O2 XDA II, QTEK 2020, T-Mobile MDA II, Dopod 696i/699 Pocket PC phones Compatible with DOPOD PH17B , PH17C battery Volt: 3.7V , Capacity: 1200mAh Made of Li-ion Polymer chemistry 100% original manufacturer compatible.