I know that keeping batteries stored long-term at full charge is not good for battery life. I've seen recommendations that, for long-term storage, battery charge should be maintained around 50-80%, as storage at full charge puts some kind of strain on the batteries. This got me to thinking that perhaps always charging to 100% for daily use is not optimum either, assuming one doesn't need the full charge for range. I fully charge my EM Evo Cross twice daily, M-F, after discharging down to about 60% on each leg of my commute. Under my circumstances, would it be better to instead charge to, say, 80%?