Unless your lifpepo4 battery has a built in BMS and even those seem to use lead acid parameters, using lead acid chargers will reduce it's life down to 2-5 years. Lifpeo4 only like bulk charging, not lead acid float, adsorb or other controls. Lifepo4 is nothing like lead acid and they have very different charge requirements, especially upper and lower parameters.
It's a very simple formula which if you stick to it, will give you at least a 15 years of use. Only use bulk charge, in a 12v system that means full charge to 14v then switch off charging, the pack will settle to 13.8v and recharging should start at 13.6v, or 3.4v per cell. Never take your cells over 3.5v and never under 3 volts, the majority of usable energy is stored between 3.1 and 3.4v. So 14v upper and 12v lower. Lifepo4 hate slow charging and floating a lifepo4 cell will render it useless in a few years, when you should be getting 15-20 years out of them at least.
It's the same with storing lifpepo4, with lead acid you have to keep a charge on them at full capacity and then you suffer from sulphication very quickly. With lifepo4, you can store them at 3.2v for years with no supporting charge.
I bought a couple of lifepo4 car batteries, which worked really well. One was in my car and the other was a spare until I worked out their lifespan, used the spare (20ah) for charging cordless power tools through an inverter in my workshop. Made sure the spare only got bulk charge and the other used the car settings. After 3 years the car one was getting stuffed and wouldn't provide the starting charge, whilst the spare is still in use and has lost nothing.