This battery is made from the highest quality Japanese cells and is designed to meet or exceed manufacturers specifications • Lithium Ion battery • Provides exceptional talk and standby time. • Analog mode: 80 min. talk & 5.5 hrs. of standby time • Digital mode: 140 min. talk & 200 hrs. of standby time • Replaces Panasonic EB-BS310 • Can be used with different types of OEM and aftermarket chargers • Warranty: 4 Years