mountainair26, me and others had a related conversation concerning the components in the newer Convoy drivers in the Convoy XHP35 Driver Analysis / Testing / Schematic thread. Long story short here, after I found that their onboard linear regulators work up to 18V of input.
Bear in mind the power dissipation at the onboard MOSFETs still matters. Since they're temperature controlled, they should work straight away with 2S cells driving a 2S emitter. However, they are likely to step down current aggressively, due in part to the larger input to output voltage difference. Reinforcing MOSFET/driver cooling amap and removing the onboard temperature protection is going to be key for proper 2S emitter driving, imho.