Your design must use a battery to provide power using a USB type A female connector to supply power and charge a mobile phone. The supply must be able to use primary alkaline 1.5V or rechargeable cells in a standard package (for example: AA or AAA size alkaline or NiMH or other similar chemistry and package).
You must research similar existing devices (see sites like instructables and hackaday for examples).
Your design must be your own unique, original design, however it may incorporate elements and ideas from existing designs.
Minimum requirements and specs:
The output must be 5.0V +/-0.2V
Output supply at least 500mA to the load
The output must be short circuit protected
Must be able to accept standard alkaline cells
Indicators for: input power, output on, charging, fault
22 freelancers are bidding on average $203 for this job
i can design this charger, please contact for detail discussion, please spare some time for visit my profile and portfolio thanks ashraf shekh design solutions