Solar Operated Coin Based Universal Mobile Battery Charger

Abstract

The growth of mobile phone market is increase day by day and the need for charging the mobile battery is required anytime and anywhere. This paper describes mobile battery charger using solar panel system based on coin and RFID module.Many times on Public Places such as Railway Station & Bus Stop, Unfortunately battery gets discharge during conversation. To overcome this problem the universal mobile battery charger is design. This system is very useful specially in semi urban and rural area where grid power is not available for partial/full time on daily basis. The coin-based mobile battery chargers are designed to solve this problem. This design is based on AVR ATMEGA16, a 40 pin microcontroller with LCD displays showing the actual time left. During the time period, a relay output is latched. This can be used at Hotels, colleges, bus station, Conference centers, Exhibition halls, service offices, Shopping malls, Airports, Train terminals. So that the mobile phone users can reactivate a low battery or dead battery by simply plug in & charging for one rupee.