THUMBOX Power Tube 10400 XXXL portable external universal battery for cell phone / tablet / smartphone / MP3 player (10400mAh) blue (accessory)
Important: must for charging the battery pack of 3.7V to 5V high margins, thus cause losses of about 20% -25%. This leaves for the charge effectively only 7800mAh - 9120mAh left. This is not mentioned in the product description in the attached Summar
