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Charging recommendations

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Hello all, I'm about to take ownership of an S85D (hopefully at the end of this month) and I want to get opinions on how best to charge the car in order to best avoid battery degradation. My job is such that I typically know when I need to travel (usually the prior day, so I can charge overnight) and there are long periods of time (weeks sometimes) when I don't have to drive more than 10-15 miles a day. There are days when I don't drive at all (but with a Tesla in the garage, that scenario is pretty much out of the window!) Does it make sense to charge to 80-85%, and then run the battery to about 20-30% before plugging back in (to reduce the # of charging cycles that frankly, might not be needed in order to avoid excessive degradation "activity"). Is that being overprotective of the battery pack and should I just plug it in every day regardless? Thanks!
 
The way I do it is:
- Set my charge target to 50% + whatever miles I need the following day until I come back to charge (basically when I come back home, it should be @ 50%).
- Plug it in every night.
- Don't worry about it.

I was told that's the best for the battery life.

-- Greg
 
Small cycles are better so you're better off charging more often. Short depth-of-charge is good. Going from 100% to 0% and back to 100 is one full charging cycle. The Model S can handle 1,000 of those.

I plug in most evenings*, and charge to about 85%. I have no idea whether this is the best thing or not. But certainly the degradation is minimal.

* sometimes I don't plug in because I expect to go out again, but then don't. And sometimes I just forget. Thanks for reminding me. :)