Yeah, and then we could see how small the differences would actually be.
A 15" Macbook Pro has a 99.5Wh battery and lasts about 8h; that's 12.5W. A program that decreases battery life by 20% would only mean an increase of 2-3W. Even if the machine and program are running 24/7 and all the energy comes from coal, that means an increase of less than 0.03T of CO2 per year. For comparison, the average carbon footprint of an US citizen is 20 Tons per year.
A 15" Macbook Pro has a 99.5Wh battery and lasts about 8h; that's 12.5W. A program that decreases battery life by 20% would only mean an increase of 2-3W. Even if the machine and program are running 24/7 and all the energy comes from coal, that means an increase of less than 0.03T of CO2 per year. For comparison, the average carbon footprint of an US citizen is 20 Tons per year.