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. Offers up to 210 minutes talk time and 210 hours standby time. Kyocera Standard Li-Ion Battery - TXBAT10163 also includes:Recharge at any time without losing performanceConvenient replacement or extra battery for emergenciesUp to 210 minutes talk time and 210 hours standby time