Definitely a hijack.
Current sense termination is really the only sensible way to charge LFP.
This ZM5 unit does not monitor current and it has no alternator temp sensing. If it does not measure the temperature then it can not back off the output current and the alternator will cook itself if it gets to hot.
It's the same as running an engine without a temperature sensor/warning - it will be absolutely fine, until the day it isn't...
It sets the output voltage, holds it there for a set period of time once it is reached and then backs off to a float voltage after that t