So my experience with batteries so far.
I havent used it much (mainly for a single v60 a day, as my wife uses the ode and the moccamaster and I use the niche and gaggia).
I did a full overnight re-charge and it has just cut out this morning having done 6 lots of 15 grams.
It is still showing three lights when started with no load.
As I have a “grinder problem” according to my wife I am not short of alternatives and this one was really only bought for an upcoming road trip/holiday (when will airbnbs start to provide proper coffee kit….) I am not overly concerned, the coffee it produces is good and I can live with sticking it on to charge daily if needed.
My only real gripe would be the locking mechanism for the motor unit which is the wrong way in my head and has now twice nearly caused me to drop things as when checking its on properly it comes apart.
But the coffee is good and thats what counts :)