Why not charge at full speed during cheap hours/

i was reasonably ok with DESS the last half year, but this week i regularly see optimal forecasts but lousy application…

Why is DESS not charging at full potential during the cheapest two hours?

from 12-13 it charges 10 kWh (4.4 from grid at 3 ct/kWh)

from 13-14 it charges 7.7 kWh (1.9 from grid at -6 ct/kWh)

from 14-15 it charges 9.7 kWh (3 from grid at -8 ct/kWh)

from 15-16 it charges 8.9 kWh (3.7 from grid at -1 ct/kWh)

and still charging from grid between 16-17 ( 9 ct/kWh, at this moment 10kW to battery of which 6kW from grid…)

Battery is now at 83% meaning it can still tak almost 10kWh

Why not 10kWh during all 4 periods and maybe less between the more expensive current hour (16-17).

I’m worried what will happen tomorrow when we have prices of -35 eurocent per kWh between 13-15 hr…

Forecast for tomorrow: