Volts are volts amps are amps.
Plenty of chargers designed for lead work just fine for LI chemistries
so long as the voltage is precisely user-adjustable, or you add external gadgets to handle the charge termination algorithm.
Plenty of chargers designed for LI I would not leave unattended and/or with backup protective safety electronics to prevent dangerous overcharging.
First you need to know your chemistry, desired termination voltage and amps rate, which dictates how long your charge cycle takes.
Whether or not you plan to risk walking away while it's charging, near a dwelling or not
Features like built-in V&A readout, size & weight, how waterproof or not at all, BMS integration, adjustable Full definition, Absorb Hold Time will add to the cost.