It might be sized like two and a half sticks of gum but the Emergency Keychain Charger by Pulsepak is providing your phones up to 2 hours of additional talk time. The purpose of this charger is to provide battery backup to your phone under emergency situations through a portable design. The charger will easily fit to your keyring and is ready to power your phone on the go. Be it an urgent email or an important phone call, you should not miss them anymore. It features a retractable micro-USB or Lightning charging connector so you don’t need a cable to charge your phone from it. The external switch will help you in opening or closing the connector. When not in use, the charger is capable of holding up the charge for up to 3 months. A lithium polymer battery backup of 500 mAh.