I currently have a small inverter that powers my TV and some lights when the grid power goes down and the 12v 100ah gel cell battery is in need of replacement. I would like to use Lifepo4 batteries with a suitable BMS as a replacement but the inverters built in charger doesn’t seem to have any adjustable parameters. The maximum voltage the battery reaches after charging is 13.8 volts and that also appears to be the float voltage. The charge current rating on the inverter is 15 amp max but it normally starts charging around 8 amps and reduces to around 600ma when it is floating. Would this charger work with four 3.2v 100ah Lifepo4 batteries? I could always purchase a new charger but the inverter operates like a UPS and everything is automatic without any intervention from me which is an option I would like to keep if possible.