The Carbon 5 will last and last and last – keeping your phone powered by when you need it (which as you know is pretty much 24/7/365). The Carbon 5 is the only portable charger on the market with a USB recharge cable built-in, as well as a Micro USB cable for all the Samsung and Blackberry smart phone owners. Give this new portable charger and if after 30 days you are not amped with the product or the service return it. Yes, we will collect it from you and give you a refund*. (*Conditions do apply).