In my 'el-cheapo' EpEVER BN-series controller, running a 4s "12v" setup, the "boost mode" timer apparently will run for the full time specified. But after that, if the Battery Pack has reached the "Float Voltage" level, it will switch down to "Float Mode" and stay there until "Boost" is re-started by some load pulling the battery below "Boost Reconnect Voltage". Although the Monitor is capable of displaying the charging current, the operating microcode DOESN'T use that value to terminate "Boost Mode".
With LFP, balancing all the cells has occurred when "Boost Mode" current has reached zero. For LFP, there should (IMO), be at least one more parameter in EpEVER's programming: "Minimum Bulk Charging Current". It ain't there.
The battery pack is between a rock and a hard place. With the "Boost Mode" Voltage set at 14.5V for my battery pack, a very long "Boost Duration" time will assure that the cells all become balanced at the peak cell Voltage allowed by BMS (or nearly that much, given sufficient time). But after that has occurred, and current has reached zero, the EpEVER continues to pound the battery and BMS with the full 14.5V until the "Boost Duration" time has been reached.
OTOH, If I set the "Boost Duration" time too short, the battery pack will not be charged very far - EpEVER will see a battery Voltage of 13.8V (my Float Value) and drop to "Float stage", which slowly push only 3.45 Volts onto each cell.
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Anyway, my own current "compromise" values are: "Boost Voltage" = 14.5V, "Boost Duration" = 90 minutes (way longer than yours), "Float Voltage" = 13.8V, and "Boost Return Voltage" = 13.6V. My BMS seems to be OK at handling the excess Boost Duration, but my batteries spend most of the day at 100% SOC - which is not optimal for LFP batteries. Thank goodness, that problem only happens during actual trips.
[ In storage, my folding RV ("Trailmanor") is stored in the garage and not exposed to sun, I recharge to fill in for "phantom loads" only a few times per year. Those "phantom loads are tiny - just the full time heat controller Relay and a Coulomb Counter Battery Monitor. Everything else gets disabled by disconnecting the 12v distribution panel during storage. ]