The design is optimized for batteries of 1,000 mAh or higher, and the input power source can be any linear/switch-mode power supply capable of catering an output current of minimum 1,500 mA at 18 V.

Oukitel’s K10000 Android Smartphone Packs 10000mAh Battery, Lasts Up To 15 Days Per Charge by Brandon Hill — Monday, December 14, 2015, 11:42 AM EDT Comments ...