2-Pack Sony HDR-SR8 Battery with Universal Charger- Replacement Sony NP-FV50 Digital Camera Battery and Charger Replacement Sony HDR-SR8 Battery and Charger Universal Charger features adjustable slider to charge different lithium-ion batteries (3.6V/3.7V/7.2V/7.4V) & AA/AAA batteries. Charge your battery by plugging the charger into a USB port. Lifetime Warranty Sony NP-FV50 Battery Specs - Capacity: 1050mAh, Voltage: 7.2V, Upstart Battery Brand On Sale for a Limited Time!