My car battery died recently because I left a light on overnight while it was below 30 degrees outside. I tried jumping the car, but after 5 minutes it still wasn’t turning on. The brake is stiff and can’t be pressed down. After spending 20 minutes trying to jump it I gave up. It has been over a week since my attempts to jump it and it has been pretty cold all of this week. Can it still be jumped? The battery is only 2 years old, but I fear since letting it sit for a week in the cold it might have drained too much. Also is there anything I can do about the stiff brake?
2 different things are going on here. Your battery is flat. And you weren’t jumping the car correctly. You can jump-start a car that doesn’t even have a battery in it.
About the flat battery, it will not be hurt from staying flat overnight. Get it on a car charger, not jumper, if you still can’t get the car jumped. If you do manage to get it jumped (watch a YouTube tutorial to see which cables in which order, make sure the other car is running etc) then run the car for at least a good half hour to an hour before shutting it off again to put some juice back into it.