Tigra BikeConsole Rechargeable Power Pack for Galaxy S3, S4, S5 and S6 Mounts (2800 mAh Li-Ion Rechargeable Battery Pack) Upgrades BikeConsole for Galaxy into a Rechargeable Case. Doubles 2X the use of apps and triples 3X the talk/browsing time 2800 mAh battery pack that extends your phone use by 240%. Recharges Galaxy S3 and S4 from 0% flat to 100% full. Simple and secure attachment allows you to ride with and without the battery Can be used as a portable battery pack to charge other devices. Weatherproof. LED status light indicates how much battery power is left.