I was just about to go to bed when I got the low battery notification, so now I gotta leave my band to charge for a bit before I can turn it. If it's at all feasible, it would be such a big improvement if you could customise battery level alerts. I would for instance like to be alerted an hour before my normal bed time, so that I could have time to charge without postponing my sleep, if the battery is getting low. (I value the sleep analysis feature). It might also be useful if you could decide how low the battery could go before it sends out the low battery notification, for planning reasons.
Or display battery levels on the app (PC and phone) at all times, so that it won't come as a surprise.
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