I turn mine off as much as I can. Going down hill and on flat terrain. Something else that reduces drag is down shifting. Mine has ten gears and third, forth, and fifth are all peddleable without juice from the battery. If I can’t keep the cadence up around 50 - 60 rpm then I look for help from the battery. Yesterday I went for 17 miles with 1,200 ft in elevation gain and still have 72% charge.