If battery life is all you care about, I'd argue you are not "core market" for FF. You're core-market for OS vendors, who will always be able to give you a bett

If battery life is all you care about, I'd argue you are not "core market" for FF. You're core-market for OS vendors, who will always be able to give you a better battery life by leveraging all the tips and (typically undocumented) tricks that a cross-platform project cannot touch.