You will not likely overdrive the LEDs unless the driver fails, as they should be at constant-current. But as mentioned, overvoltage could damage the driver, so not recommended. I would even drive below the stated limit (30v) for margin. Also, the battery voltage could be higher than 36v during part of its charge cycle.
I bought such a utility light: 9 LEDs with 10-30v rating. Managed to pop the plastic lens off without damage, although it was glued in place. Found SMT power LEDs in groups of 3, each with driver IC. LEDs were 3 in series per group so required about 10-11v. I could even turn voltage down to around 8v where they dropped off, although LEDs dimmed below 10v.
Dave