School me on DC/DC chargers and systems

[Robo]

Just a means of increasing the charging current. The D250s is a 20 amp unit, adding the Smartpass allows for a combined charging rate of up to 100amps. Good for larger battery banks.

without smart pass up to 300ah.
with smart pass 80 amps and 28-800ah.

from memory ctek is no good with smart alternators.
I'm fairly sure redark can handle smart alt as the low volt switch off compensate being something like 10v.

I know for fact ford ranger and ctex don't work together, the smart alternator function can be turned off to fix it but at $400 lol.
rangers smart alt saves all of 400mls of fuel over 100klm what a waste of time, fitting manual hubs to disengage front diff would easily save more than that.