3-slot charging station that can charge three batteries at the same time for different devices, with an LED screen to monitor charging status. High capacity battery each 1800 mAh, delivering up to 160 minutes of use for Osmo Action 4 and Osmo Action 3 cameras. Ideal for travel and outdoor activities. Advanced safety features include protection against overcharge, deep discharge, short circuit, overvoltage, and overcurrent to ensure reliable use. Convenient indicator light: the LED indicator glows green when the battery is fully charged, providing an easy status check. Use scenarios - On location shoots with Osmo Action 3 or 4, charge three batteries simultaneously to keep cameras ready. - While traveling, maintain spare charged batteries for extended filming sessions. - At outdoor events or camping trips, rely on quick, clear charge status and long runtime per battery for all-day use.