Castle Intocircuit® Power External Battery, Battery Backup Portable 11200mAh 5V 2A / 1A Dual USB Power Bank for Apple: iPad mini, iPhone 5 New iPad (Lightning Cable not included) / iPhone 4S 4 3GS 3G iPad 2, iPod Touch; most Android Phones: Samsung Galaxy S3 i9300 S2 S II i9100, Galaxy Nexus, Galaxy Note 2; HTC Sensation, One XV XVS One, EVO 4G, Thunderbolt; Nokia Lumia 920 900 N9; Motorola Razr; LG Optimus; PSP Charger high speed Color Grey (Electronics) 3
Castle Intocircuit® Power External Battery, Battery Backup Portable 11200mAh 5V 2A / 1A Dual USB Power Bank for Apple: iPad mini, iPhone 5 New iPad (Lightning Cable not included) / iPhone 4S 4 3GS 3G iPad 2, iPod Touch; most Android Phones: Samsung Galaxy S3 i9300 S2 S II i9100, Galaxy Nexus, Galaxy Note 2; HTC Sensation, One XV XVS One, EVO 4G, Thunderbolt; Nokia Lumia 920 900 N9; Motorola Razr; LG Optimus; PSP Charger high speed Color Grey (Electronics)
After several months of use (June 2014): - This one is a bit heavy but is more compact than other models (smaller) - Charging is good on the first 50%, then it decreases rapidly - Like all batteries pocket, a portion of the filler is used to self power the system - I do not have the impression that the magazine is "intelligent", ie it automatically cuts the charge after charging smartphone - The appearance and feel I was not packed.
Overall, it's still a good product for a booster battery.