Cheyoll Automotive mini battery portable car jump starter power bank Support 12V car emergency start, portable lighting, and a variety of mobile phones, PSP, MP3/MP4. The jump starter itself can be recharged by the included DC12V power adapter. Phone charging voltage limiting protection circuit does not hurt the phone. Act as a mobile power bank to charge your laptops, mobile phones, PSP, PDA, MP3, etc. Come with a LED light with 3 lighting modes (High light, Fast Strobe, SOS) for illumination and SOS use. (Long press the Power button to turn on the LED light). Phone charging voltage limiting protection circuit does not hurt the phone.