Most LiIon chemistry is about 4.2V for 100% SoC. But Volt never charges to 100% to maximize lifetime charge cycles, and reduce degradation. A "full" Volt charge is only about 4.0V per cell, or about 285-290V for the whole 96S stack.
3.6V to 3.7V is "nomimal" cell voltage that which the capacity is often rated at. And the "nominal" pack voltage of 352V. It's definitely not "full" at 3.66V.
I don't know what the low voltage cut off is, but it's probably down around 3.2V per cell (around 24% SoC), depending on discharge rate, temperature, and who knows what else...
These are approx. gen 1 numbers, gen 2 has wider SOC/voltage limits.