... power supply 2.Exquisite design 8.9mm slimmer than iphone4s 3.CE,FCC,RoHs 4.Welcome OEM 5.Distributorships offer 5000mAh ... achieve different shapes,Light weight: much lighter than Li-ion battery packing,Safety: Li-polymer use Solid Polymer Electrolyte Membrane (SPEM) material, which will not ... 8000mAh can be full around 4-5hours by computer USB.3. How long to charge mobile devices by mobile power bank ...