Hitech - 2 Pack of FNB-V87LI Replacement Batteries for Yaesu / Vertex VX-820, VX-821, VX-824, VX-829, VX-920, VX-921, VX-924, and VX-929 2-Way Radios (Li-Ion, 2500mAh) Battery pack is made on-demand and is shipped from Taiwan, ensuring freshness and quality Batteries will take between two and three weeks to arrive after ordering. 100% OEM compatible High-quality Sanyo cells: 7.4V, 2500mAh, Li-Ion chemistry, REQUIRES Li-Ion battery charger Battery case is 100% polycarbonate plastic and is ultrasonically sealed for maximum strength 1 year manufacturer limited warranty. See product description for details