aMagisn AA10 3-slot Battery Charger Type-C Fast Charging Case with TF Card Slots Sports Camera Accessory Replacement for DJI OSMO Action 4/3 Batteries

Features:
【Simultaneous Charging 3 Batteries】The battery charger supports simultaneous charging of 3 batteries at maximum power to make sure they are fully charged and ready to go.
【Smart Charging Management】When the battery is low, the charging hub can intelligently charge the battery at maximum power. It will gradually reduces the charging power once the battery is high and automatically stop charging the battery once it is fully charged.
【Multi-Protection for Safe Usage】Supports input overcurrent overvoltage protection, output overcurrent overvoltage protection, over-temperature protection, electrostatic protection and short-circuit protection, safe and secure.
【Simple and Clear Light Indicator】The battery charger has power indicator(light off: power off, blue light on: power on) and battery level indicator(light off: power off, yellow light on: charging, green light on: fully charged)
【Dual Functions】The charging hub can also be served as a battery and memory card storage box which can hold 3 TF cards at the same time.