AnkerĀ® Astro3E 10.000mAh dual 5V / 3A USB External Battery Power Bank charger for smartphone and tablet White (Accessories)
+ Not too big, with many connection possibilities to Android and Apple devices, LG 4X HD invites my (P880) on 3-4 times, even invites two devices simultaneously, small bag for the battery pack with cable and adapters to stow