Wednesday 31st July - there goes my range again

Tuesday doesn't merit a separate post. Total distance covered was only 29 miles, range estimate started at 48 miles and dropped to 21 which doesn't seem to be low enough to trigger the mysterious battery drop:

Wednesday on the other hand again shows the mysterious loss of range. The days starts well with 49 miles estimated range (it would be so nice to get something neat the start of day estimate; last year that was no problem but no such luck this year).

 Drive 13 miles to work, range drops 13 miles

 and drops another 2 miles during the day. That's alright, a few miles variation is fine:

13 miles home again and we're pretty much on course for the morning 49 mile range estimate, but we're going out again for the evening, so time for a part charge:

I think that 48 minutes of charging, 10A at 240V is probably about 1.5kWh extra battery capacity, anyway it gives us another 6 miles of range:

A brief stop, 40 miles covered today, 11 miles remaining (including the extra from the 48 minute charge).

and 10 minutes later, the car hasn't moved but 10 miles of range have disappeared:

Remember that the 9.7kWh includes three quarters of an hour charging, without a part recharge I actually get less than 9kWh out of a full battery charge:

 I actually managed to double the 2 miles back up to 4 miles before running out of charge, but still leaves at least 8 miles unaccounted for. Subtracting the estimated 1.5kWh top-up would indicate about 8.7kWh for the full capacity of the battery: