Originally Posted by evnz
I am looking at getting lithium batteries and was told they use a [different] charger than lead acid
Actually a CCCV charger is ideal for both lead acid and for Li-ion.
That's because the intelligence to charge your Li-ion battery resides within your BMS, not within your charger. The BMS will ensure that the charger stops before ANY individual cell is overcharged. Then, after the BMS has balanced the pack a bit, it will allow the charger to come back on, and charge the battery a bit further. At the last cycle, the battery will be top balanced, and the charger will then be able to go to the CV (Constant Voltage) mode, and finish charging the battery. For a detailed discussion of how that works, see this video
Ironically, chargers with a "Li-ion profile" are not as good as a plain old CCCV charger. because A) they give you the wrong impression that they will protect your battery during charging (they don't), and B) they may stop before the battery is full, even if the BMS says it's OK to charge some more.
1) Select a good BMS
2) Get a plain old CCCV charger