I am new to Arduino and I have managed to create a arduino [u]nano[/u] with a soldered [u]RFID tag[/u] on it (FST1000A). Since this entire setup is very small i was hoping to be able to supply power of at least 9-12 volts using either coin cell battery or A23 battery to maintain the compactness of the device.
The idea is to make it portable and small. Therefore I wanted suggestions on whether it is possible and how long will it last, ( hopefully at least 1 month). I am open to suggestions and critiques and any help.
I currently power it using a portable battery charger but that is too bulky. The chip itself uses 4MA and nominal supply is 5V but I want to supply more than 5 (hoping for 9 V or higher). Please help me out here guys