ExpertPower 3.7v 700mAh Li-ion Two-way Radio Battery for Yaesu Vertex FNB-52Li VX-1R Brand New  We guarantee you will receive a brand new, unused battery easily making this a smart buy. Battery Specs - The capacity is 3.7V 700mAh, utilizes Li-ion technology, and the color is Black. Reliability Defined - ExpertPower products are tested to match and/or exceed OEM specs. Quality Guaranteed - Products trademarked ExpertPower are marketed and sold exclusively by ExpertPower. Peace of mind; 1 Year limited warranty  We know a lot could happen in 1 year. If your product fails, help is one phone call away.