Portable jump starter
Worth its weight in gold
If your car's 12-volt battery drains enough, you won't be able to start your car. You could either call breakdown recovery, or get the car started yourself.
I've used devices like this so many times, I'd consider it essential kit. The one I have is no longer available so this is the nearest I can find. It's small enough to fit in your glovebox (or frunk, if you have one), doubles as a USB charger, and is fantastic to have for emergencies. I can't vouch for the reliability of this particular one but feel free to do some research yourself. It doesn't need much power to get an EV started so you don't have to spend much.
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