So I was considering making a small device to remind me to water a plant I have to water every 48 hours. I was gonna just get a small arduino and program it to delay for 48 hours then light up an LED untill reset (if the arduino has a reset button or by a button if it doesnt). I was wondering if I programmed it to just sleep for 48 hours and tried to reduce power usage as much as I could would I be able to run it off a battery or would it chew it up too quickly. I wouldn’t want to be changing the battery more than once every month or two. Also which arduino in perticular would be a good model for this project.