Recharges itself in 10 hours with a 2 amp charger, phone chargers (generally 1 amp) may take up to 20 hours. PowerIQ and Voltage boost technologies combine to give universal full-speed charging for non-quick charge devices. Surge protection, short circuit protection and more advanced safety features keep you and your devices safe. Enhances grip and doesn't leave smudges or fingerprints. Industry leading output of 4.8 amps provides enough power to simultaneously charge any combination of devices at full speed