iHome Rechargeable 5 V Lithium-Ion Battery 1-Pack

This 4,400 mAh power bank portable charger packs plenty of power and can be charged with any standard micro USB cable and charger, and it can be connected to almost any device with a standard USB output for universal compatibility. Featuring a Lithium-Ion battery, this charger will hold up to many recharge cycles for a long life and can hold a charge when not in use. This slim charger is thinner than most wallets, making it easy to carry in a pocket or purse.