There are many that use 3 stage chargers for LiFePO4 but it it does not have a LiFePO4 setting will not charge your battery to 100%. It will be close though. Set it on AGM, as Nomadz said, charge it up and then see what voltage it settles at.
Some battery manufactures do not recommend charging to 100% so as to increase the number of cycles during the batterys lifespan. This maybe 4000 instead of 3000 cycles but at the end of the day the battery will supposedly still have 80% capacity. In some the BMS is set so that you can only get something like 80% capacity from them.
I struggle to understand why a "3 stage" battery charger set to a suitable AGM setting would not charge a LiFePO4 battery to 100%. Our now almost 9 year old 4 cell 300Ah LiFePO4 battery is ALWAYS full once the voltage at the battery terminals reaches 14.2V whether charging at 5 amps or 130A (50A solar + 80A alternator).
Both the Victron SmartShunt and Junctek shunt based battery monitor tell me so.
No absorption time is necessary. Ours then alternator "floats" at 14.0V when driving with the headlights on or c13.35V while the sun shines.
If the DC-DC charger does not exceed say 14.4V on bulk and absorption then up to 13.8V on "float" I would not be concerned for the battery for a few hours driving once it reaches 100% SOC.
-- Edited by Scubadoo on Saturday 12th of November 2022 06:35:20 AM
-- Edited by Scubadoo on Saturday 12th of November 2022 07:57:32 AM
My Sony mobile phone (not sold in Australia as our market is too small) has a setting for 80% maximum charge which is what I have set the charging to for maximum battery life.
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