I bought this program to code my RC. I have a fiat punto 188 JTD from 2000. When I try to program the RC, I get to the point where the program asks me to press the RC button, but it doesnt give me time to press it and gives an error message saying "Battery e flat". The battery on the RC is...

The message appears with giving me time to press the RC button...
HELP please

I've been trying to program my RC but it keeps giving me "Battery Flat"
Using brand new battery on the RC.
Using FES 3.1.1 and ELM327