I bought a 2212 1400kv motor. I will use a 7.4v lipo battery, and 40a. is this ok? Will this setting damage my electronics? I hope it can be well. I don't want to spend more money.

I asked for your post to be moved to a more appropriate forum:
https://www.rcgroups.com/power-systems-13/

Originally Posted by maydayday

I bought a 2212 1400kv motor. I will use a 7.4v lipo battery, and 40a. is this ok? Will this setting damage my electronics? I hope it can be well. I don't want to spend more money.

What prop you run has some influence, that said on 2s you should be ok. Banggood sell a 2212 1400kv motor with 30A ESC and recommend 2s-3s.

I have similar motors and run 3s with smaller ESC's