Ther are few things to "un-learn" from our lead acid (LA) habits for LiFePo (or any other lithium-based battery)
LA wants to be trickle charged and full all the time for a long life.
LI does NOT
like to be hanging around fully charged. Keep the maximum charge voltage to 3.45V to 3.5V per cell (13.8V-14.0V) for 4 cells. I discharge my batteries to about 50% and disconnect EVERTHING from them whem I do not use the boat
for months at a time. I hook up my starter LA battery to the house and keep that on a shore or solar charger
for the bilge pump
and the like.
Best to have a charger
that can be programmed to charge to 13.8V-14.0V and then stops all together or drops back to 13.3V-13.4V (float) to keep up with any loads.
Tesla knows something about LI batteries (after all, they warrant the batteries for 8 years) and the charger defaults to an 80% charge. You have to set it to "range charge" if you need a 100% full battery for a long trip. After that it defaults back to an 80% charge.
Make sure you have a solenoid that cuts off ALL
loads (not the chargers) when the voltage drops under 3.0V per cell (12V for a battery).
When you charge the voltage will stay under 13.5V for a long, long time and then suddenly start rising. Measure the voltage of each cell with a multi-meter while charging above 13.6V. Make sure each cell has the same voltage within 100mV. If one cell goes higher, place a cable with a 12V headlight bulb across the terminals of the high cell and drain it down for a while. This is to balance the cells at the upper end. Once balanced the cells should stay balanced for at least a year.