Carrying around extra batteries for your smart phone may not be the best solution to the problem of not getting all day battery life. You have to make sure to not touch coins or metal to the connectors on the battery or you may have some problems. Carrying around USB cables to charge your phone will give you what you need though is a little inconvenient some times. But what if you are not somewhere that you can plug that USB cable into. A better solution comes in the form a a tube. And it can provide you with enough power to charge up your smart phone.
The Halo Power Charger 2800 gives you exactly what you need with the battery enclosed in the compact tube which is only 4 inches long and 3/4 inch around. While coming in multiple colors, it has the ability to charge up your phone with the normal connections for microUSB, miniUSB and 30 pin iOS connections. They provide these 3 connectors when you buy the product, thereby reducing the space in the carrying case.
Indications are it may take up to 3 hours to charge your smart phone using the Halo Power Charger, but when you are in need, that is less important. And the Halo Power Charger will take up to 6 hours to fully recharge the battery in the compact tube. For an emergency where you must have power to your dying battery for your smart phone, this is a great option. This is available at the company web site for $49.95.