... long operation time 3.wide compatible Features:1.Compatible with iphone, ipod, Samsung, Nokia, HTC, PDA, ... Pack via notebook USB Port or wall adaptor with USB charging cable4. Portable, rechargeable and universal ... power pack5. safety with PCM to avoid overdischarge, overcharge and short ... Li-ion and LiFePO4 cells and battery packs with high quality. We produce our own "DLG ...