maybe use a calculator to deduce the flow of power going into the accumulators ?
Like if that special combinator here can get you all the info but what's going in and out of accumulators, then if you have your current production( electric arc signal ) above your max consumption ( electric cord/socket ) you know how much goes into your accumulator
and don't forget that by connecting an accumulator to a power pole and you charge that accumulator, there is a signal "A" that tell you how much it is charged
like, if A 25, it means THAT accumulator in particular is charged at 25% capacity
why do i precise "that accumulator" ??
well, all accumulators on the same grid is charged and discharged evenly ( the same flow on all accumulator, individualy )
and that flow is not correlated to theirs individual charge level, which mean that
IF you control your powerplant pumping loops based on the signal of an accumulator ( to start when A inferior to 25 )that is in a grid with let's say 1000 accumulators in total
that means that the power input-output is divided by 1 000
and then you put some megagrid of accumulators that get you to 1 000 000 accumulators in total
until you fully charge all accumulators in yours network, your powerplant is still reading the powerlevel of the first grid with the historic power of before
and if that powerplant is enough to supply all the power you need, the plant will only start when A under 25
BUT when the powerplant start again, it's not charging only yours 1 000 accumulators from before, now it's charging 1 000 000 which mean that you get 1/1000 of power going into each accumulators, but all of them, and as yours first generation 1000 are more charged that the second generation 1 000000
you WILL get a false reading of the level of charge of yours entire grid and your powerplant will shutdown when the first generation of accumulators are at A above 25
in that particular case, the power will slowly even out between the first and second generation over the cycles, but you will always have a false reading....until you reset that info, wether by draining completely all accumulators, or by charging them all at 100%
have a nice day :=)