I have a Zenbook Infinity and yes, it is good, but the battery life is too bad. On linux it lasts 3 hours or less with the OnDemand governor, whilst on windows

I have a Zenbook Infinity and yes, it is good, but the battery life is too bad. On linux it lasts 3 hours or less with the OnDemand governor, whilst on windows it last 4 o 5 hours. I don't know what to do to improve battery life :(. I regret not buying a Macbook Air for the same money instead.