Progo Brand NP-BN1 Professional Li-Ion Rechargeable Digital Camera Battery with Battery Case for SONY Cyber-shot DSC-TX9 DSC-T99 DSC-WX5 DSC-TX5 DSC-TX7 DSC-W310 DSC-W320 DSC-W350 DSC-W330 DSC-W380 DSC-W390 DSC-WX5 Digital Picture Cameras Progo Brand Battery, 100% Compatible with original manufacturer equipments, guaranteed! Integrated microchip prevents overcharging, overheat & provide short circuit protection. High quality Li-Ion battery cell. 960 mAh Capacity Absolutely no memory effect so that you can charge battery at anytime 12 months USA warranty