Lithium Ion (Li-Ion) batteries provide superior talk and standby times. They can also be recharged at any time without losing performance. Use as a replacement or extra battery for emergencies. Extra capacity battery. Offers up to 315 minutes talk time and 305 hours standby time. BlackBerry C-M2 Extended Li-Ion Battery - BAT-11004-001 also includes:Recharge at any time without losing performanceConvenient replacement or extra battery for emergenciesExtra capacity batteryUp to 315 minutes talk time and 305 hours standby time