Got a new installation: Multiplus-II 12/3000 2x120, Cerbo GX, and SmartShunt 500. There are three Battle Born LiFePO4 batteries connected via a Lynx Distributor. All settings are defaults except for Absorption voltage which is set at 14.4, the midpoint of Battle Born's range.
The Multi goes through Bulk charge okay, but then cycles charging amperage -- not the status light --on and off when in Absorption. The absorption light on the Multi stays on constantly, but the charging amperage goes from 0.8 to none based on the voltage. When the Multi is charging at 0.8 amps, the voltage climbs in a minute or so to 14.1. The charging current then stops despite the Absorption light staying on. After a couple of minutes, the small drain from the Cerbo GX causes the voltage to drop to 14.39 at which point the Multi starts charging again at 0.8 amps.
I watched this behavior for just over an hour and the Multi never entered Float stage. I suspect there's a setting...or combination of settings somewhere that need to be adjusted.