Hans gave some data of the battery of his EsseEsse in his recent post (
https://www.electricmotorcycleforum.com/boards/index.php?topic=11314.0).
That made me look at my charging data at home which I would like to share with you (Ribelle RS MY22).
Having a plug-in-counter installed which should be fairly accurate, I recorded 29 charges over the last 4 months. Not included are the CCS charges outside my home.
In the attached diagrams you see the calculated real capacity of the battery when a charge is linearily extrapolated to 100 % SOC.
Example: Charged from 40% to 80%, counter showed 6,7 kWh. Calculated real capacity is then 6,7 kWh * 100% / (80%-40%) = 16,8 kWh.
At home I slow-charge overnight usually at 8 A (1,8 kW) either to full (if I plan a trip the next day) or only to 80% if nothing specific is planned
(reason: I read that letting a fully charged battery sit at 100 % is detrimental).
The data are to be taken with an accuracy of approximately +/- 0,2 kWh.
Reason for that is that the charging often stopped during the night but the cooling fan of the on-board charger kept running which according to the counter is drawing 55 W of power.
There are two figures odd-out, there I might have misread the numbers on the display of the counter.
Still, what you can see is, that the real capacity of the battery is a bit over 17 kWh.
One time I rode the bike to 0% and charged it to 100% with
17,4 kWh, which is consistent with the Arithmetic mean of all charges to 100%.
'Personal best' was 18,4 kWh charging from 44% to 100%.
Expectedly charging to 100% pumps more into the battery, probably due to the balancing.
What is not clear to me is the difference to the numbers stated by Energica:
21,5 kWh maximal capacity
18,9 kWh nominal capacity (88% of max)
17,4 kWh real capacity (81% of max)
The only explanation I have for that is, that Energica's numbers are from an ideal world with optimum temperatures, beginning and ending charges at optimum SoC etc.
What do you make of that?