Tried to be smart but actually screwed up.

It was really cold this morning and my car wouldn’t start. I suspected it was a battery and tried to jump start with another car. I was in a hurry and wasn’t paying much attention to the right colors of the jump cables. So, I connected black to positive on a spare car. On my car I’ve used the right polarity for the battery. Both cars were off. Ive noticed sparks and small smoke coming out of my battery so I disconnected everything immediately. Once I reconnected cabled properly, I started spare car first and then my car and was able to drive it. Electronics seems to be working on both cars.

Unfortunately my mechanic is off for the holidays, thus asking here.

Are there any potential damage I could’ve done to both cars? Is there a way to check it?

submitted by /u/dpak0n4ik
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