Safe and Reliable: With FCC, CE and RoHS certifications, multiple protection technologies can keep the power bank from over-charging, over-voltage, over-current and short circuit. When electronic devices surpass AC power limit, it will automatically turn into the protection mode to ensure Ultra-Safety performance. Huge 31200mAh Capacity: The battery provides enough juice to power 12" MacBook for 1.8 times, an iPad Mini 4 for 4 times, an iPhone X for 8 times. The AC power bank is able to charge laptops, phones, cameras, fans, and other electronic gadgets and appliances.