The device is convenient, handy (hardly bigger than a smart phone) and looks even chic. It comes in a small, practical pocket with the most common plug-in adapters therefore (Micro, Mini USB, old Apple charging plug). My two mobile phones, the Z3 compact and the S4 mini invites it perfectly between 3-4 times. Practical: The Power Pack has two outputs with different boost pressure. If you choose the higher power is the mobile phone, depending on the capacity, loaded within 1er hour. After depletion of the battery pack needs charging power to the power outlet again. This reveals a small weak point., Which can however be easily rectified. Thus, the charging time is a 1A charger (normal mobile phone charger) 13-15 hours. When using a loader with more power (eg, from a Tablet - 2A), the charging time is reduced by half and analog fully recharged within 6-8 hours.
I myself have the power pack always there when I longer leave the house and since then never again have to experience the situation that dying my cell phone, tablet, or the camera. Quality and price are right here. Around so a good buy!