This compact and portable charger is compatible with multiple power sources that accept the USB input cable, which is stored in a slot on the side of the charger. It conveniently charges two batteries simultaneously. There are 2 indicator lamps display the status of the battery, the indicator lamp flashes when charging and will be constant on when charging is complete. Moreover, when the battery is about to overheat, the charger will sense and stop charging immediately. Besides that, the charger will automatically detect when the batteries are fully charged and stop charging to prevent damage to your batteries</br> </br> Specification:</br> </br> Product dimension: 80 x 58 x 25mm</br> Input: DC 5V-2.2A (Min)</br> Output: DC 8.4V-600mA </br> Full Charging time: About 2.5 hours</br> Material: ABS</br> </br> It fits for original Sony NP-FZ100 battery and Replacement Sony NP-FZ100 battery from third party, below are the compatible cameras for your reference:</br> </br> Sony A9 / A9 II</br> Sony A6600</br> Sony A7R IV / A7R III / A7 IV / A7 III / A7S III / A7C