+1 Yeah, it's only rated to 6s. It may work, but it's probably not going to be reliable on an already low end esc.
Specification:
Cont./Burst Current: 150A/1080A
Resistance: 0.0002 ohm
Suitable Car: 1/5, 1/8 on-road and off-road cars / trucks For competitive race
Suitable Brushless Motor: 3.5T...