... .Model:EM-5518 3.MOQ:1000PCS 5v li ion battery pack Basic parametersOutput Voltage: DC5.0V±0.25VOutput Current:≥ 500mA ... interface, mobile power, using high-quality ultra-thin Li-Polymer batteries designed, good security; built-in comprehensive protection circuits ... , IPOD, MP3,MP4, PMP, GPS, Bluetooth, digital cameras.emergency battery external battery pack lifepo4 battery pack 5v li ion battery pack