Arduino uno connected a hx711 and a gsm shield

Hi the team
i made the project to connect arduino uno wih hx711 and gsm shield for weight measurement and send it my phone when i call it. It is work very well for 24 hours per day. But i would want to make the project it work for one weight measurement every night and sent it the result my phone. I want to work it the field with 3 or 4 batteries type aa fir a long time. Can anyone help me?
Thanks?

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