Specifications & FeaturesBattery Capacity: 20,000mAhMaximum Output: 15WCharging Technology: Anker’s exclusive PowerIQ and VoltageBoost for optimized, safe device chargingPorts: 1 USB-C port (input/output) and 1 or 2 USB-A ports, depending on the generationTrickle-Charging Mode: Double-tap the power button to turn on a cool-green LED light; this mode provides optimized charging for low-power devices like Bluetooth earbuds.