Preparing for the colder weather: the e-bike?

This week looks iffy for riding outside with rain predictions and temperatures in the 40s.

I will take care of this  bike first.  I store the bikes in an unheated garage to keep the wet weather off.  I place cardboard under the tires to provide a buffer between the cold cement.  I also set out a disposable dampness collectors from the hardware store. Throughout the winter I would add air to the tires as needed.  These precautions worked last year and the bike was ready when in the spring.

The battery and charger.

General battery awareness leads me take the it inside for the winter, because the temperature is warmer and better for battery life.

What else should I do?  I found out to only
1. charge the battery to 60-70% .
2. Store in a cool, dry place and out of the sun. Regular house temperatures would be safe.
3. The battery may lose some charge, so check the loss during the winter.  Recharge to 60-70%. Do not let the battery totally discharge. 
4. When you are ready to ride that is the time to charge the battery to full 100%.