SmallRig NP-FW50 Camera Battery Charger SR4081 (4081) SmallRig NP-FW50 camera battery charger 4081 is made of high-quality ABS+PC fireproof material. The surface is frosted high temperature resistant tactile and durable. The built-in battery compartment is the same size as the original camera battery closely fits the camera battery compartment and is installed without jamming. The charger adopts a double-slot design which can charge two batteries at the same time. The LCD screen displays the charging voltage charging current and charging quantity in real-time allowing users to see the charging voltage charging current and quantity more intuitively. The charger has a built-in USB-A charging line and USB-C input port which can be charged in any way through the charger car charger and mobile power supply.Note: For the best charging experience a power adapter with a higher than 5V2.1A output is recommended. Do not use the two input interfaces at the same time. Manually measured weight and size may not be accurate. The kit does not include a USB power adapter. The charger comes with a meter to help display how much you charged (mAh). If the battery is temporarily disconnected the meter will recalculate its charged capacity(mAh).