Syarin Micro USB 5V 2.5A Power Supply Adapter Cable for Raspberry Pi 3 High Quality AC Wall Charger. Input:AC 110-240V/ 50-60Hz ;Output:DC 5V/2500mA. Connect your device to AC wall power jack for power charging. Intelligent Switching circuit will recognize a full battery & automatically switches to a save mode Plug never heats or overcharges the battery.Short circuit protection.