Anchor 2nd Gen Astro3 12800mAh 3 port 4A Portable External Battery Charger with PowerIQ technology for iPhone, iPad, Samsung, Nexus and more (black) (accessory)
The battery delivers what it promises, but you also need a powerful charger, otherwise you have no great joy, I myself use a product of anchor, but I somehow had the impression that that was the battery before in use, because the polished faces top a