Setting the value for the REBULK parameter in the KID

[Vic]

Once the WBJR is working correctly, when we look at the WBJR status screen where it shows the net current into/out of the batteries, if the KID is in Float mode and there is enough PV power available to balance the loads, should we expect to see ZERO Amps showing on that status screen?  (in other words, the Float charge current would be just matching the current we are drawing out of the batteries at any moment)

A Flooded battery that has just been fully-charged,  and is then in Float,  will need some current flowing into the battery to maintain any reasonable Float voltage.

There will be a period of time,  just after the transition to Float,  when current flows from the battery (negative current) to supply any load  --  like the Tare of the CC,  in your case.  Once the Tare losses and self-discharge remove the Surface Charge,   there will be a small current into the battery that is needed to maintain that reasonable Vfloat voltage.

On the old Flooded battery banks here,  this amounts to about 0.3% of nominal 20 Hr Capacity,  at the manufacturer's recommend Vfloat.  There should be some temperature effects on this current.

Vic

[dgd]

Interesting comments from vtmaps concerning forklift batteries.
I would agree that non floating charged banks do stratify and this appears to reduce charge capacity. A local company with 3 forklift and 12 sets of batteries (8 by R220s per set for 48V) can have a couple of charged sets unused for a week or more.
The owner goes for fishing weekends about 300Ks to his rented lakeside home, no grid, so takes one or two sets in trailer with 1k5 inverter and a couple of 300watt PVs with KID, sets it up mostly for lights, small tv and bar chiller. (just keeps sets in trailer)
He always takes poorest performing set and the journey shakes up the R220s and he says its like they have a new lease of life when he gets back and grid charges them again.
He puts it down the the good shaking/abuse they get on the journey that airs and mixes the acid.
..sorry for floating slightly off topic 
dgd