... .Self-productive protective board PKCELL 4800mAh Power Bank with LED Lighting and SOS Help Signal Two Modes Main parametersOther parametersProduct ... -current,over-voltage,short-circuit,over-load,etc.Other function: Power Intelligent monitoring system Fit for:iPhone,iPad,iPod ... phones,Digital Camera,MP3,MP4,PSP,NDS etc.Compatible with all USB interface charging equipments. Operating environment:-10°C ...