Skross SOS Battery Travel Back-up USB Battery/Charger For iPhone & iPod - White Suitable for portable USB devices, e.g. most smartphones, MP3 and MP4 players, game consoles, eBook readers, etc. Designed in Switzerland Input: 5V / 2100mA max.Output: 5V / 1000mA max.Low power mode: 100A Battery: LiPo (lithiumpolymere) 1200mAh / 3.7V (no memory effect) Number of charge cycles: min. 300, Capacity loss: 8% per month