Need help getting smart shunt to synchronise

[TherealKT]

I asked created this post a few months ago and got some good answers.

Relation of Tail Current and Absorption Time

I am looking to get a better understanding of the use of tail current and absorption time in setting up chargers and shunts, specifically when charging LFP. My understanding is that the tail current will specify when absorption charging stops based on the battery current reaching at or below the specified value. For example a 2.0% tail current for a 200AH battery bank will stop absorption charging when the batteries will only receive 4 amps. However, I also understand that using a fixed absor…