Amp Max Backup Battery 6700mAh in Black

Keep your smart phone charged while you’re on the go with the Amp Max portable charger (Black). The Amp Max features a high density 6700 mAh battery, providing about 45 additional hours of usage for your mobile phone. The Amp series includes an integrated USB charge cable, to refill the charge in your Amp Plus after usage. Amp Plus includes two USB ports which can provide up to 2.4 Amp charge rate to your connected device(s).