The latest and lightest in battery technology Lithium Ion (Li-Ion) batteries provide superior talk and standby times. They can also be recharged at any time without suffering memory effect a condition that can sap a battery’s performance over time. Use as a replacement or extra battery for emergencies. Offers up to 360 minutes talk time and 300 hours standby time. Extra capacity battery. Includes black battery door. Kyocera Extended Li-Ion Battery with Black Door - TXBAT10120 also includes:Recharge at any time without losing performanceConvenient replacement or extra battery for emergenciesExtra capacity batteryUp to 360 minutes talk time and 300 hours standby timeIncludes black battery door