LiFePo4 vs Lead Acid...Some points of interest.

FWC wrote:

There are a couple of features that make the Victron more accurate than many of the cheap-o monitors:

For lithium, an important feature is automatic syncing - you can program into the Victron what your fully charged voltage and tail current is, thus when you know the battery is full, the monitor automatically syncs SOC to 100%. This compensates for integral errors, which are always an issue with Ah meters/coulomb counters.