I take this as permission to top off my Vado SL's smallish battery whenever I see fit without worrying about shortening battery service life or guarantee period.
Good lesson on misinformation: Turns out, the folks who were dead-sure that a new cycle starts every time you charge were dead-wrong. Had no idea who was right at the time.
The information that a "charging cycle" is made of the charging increments was clear to aware Specialized e-bike riders a long time ago
Now, it is available in a proper written form, which I greatly appreciate.
Now, you cannot say topping up the battery after each ride does not shorten the battery service life; it does. The lithium-ion battery lives long when it is maintained between the 20 and 80% State Of Charge. For me, it is impractical, so I
do top up my batteries post each ride. However, I rotate my 4 Range Extenders between the rides, and set up Vado SL the way the energy is primarily drawn from Range Extenders. Still, my main battery has accumulated some 140 charging cycles already. Now, the main battery is already below 300 Wh, and Range Extenders are at about 150 Wh, meaning a serious degradation.
You would charge your Vado SL carefree for 2 years and then what?
Taking into account your use of the assistance is very low, you might consider setting the Charge Limit (80%) using the Specialized App, and enjoy your battery healthy for a long, long time!