Where to keep a battery jumper?

[Scottmcll]

Like many, I have a battery jumper starter brick. In my old ICE car, I kept it in the car and plugged into a USB. I was doing the same in my beloved Mach-E since getting her in Jan., But after reading posts here re 12v battery failures, it finally dawned on me that keeping it in the car would do me no good since in all likelihood, I would be outside of the car when a battery failure occurs, right? So is the best option to leave it in my garage and hope that if a LVB failure happens I'm home? Am I missing something or is there a work-around? Just wondering what you guys are doing.

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[RickMachE]

That's it. And it needs to have a boost mode to work. You also get 5 years / 60,000 miles free roadside assistance...