Portable jump start packs?

GOOLOO GP4000 $116 with current discount on Amazon. I have seen them go below $100 on occasion.

$100 GOOLOO GP4000 Jump Starter 4000A Peak Car Starter (All Gas,up to 10.0L Diesel Engine) SuperSafe 12V Lithium Jump Box,Auto Battery Booster Pack,Portable Power Bank with USB Quick Charge and Type C Port

https://www.amazon.com/gp/product/B09HJH1S41
Bought them for my entire family. (6 units)
I have used mine about 5 times to jump others. (Ford Explorer, Ford Crown vic,...)
I take my wife's and mine out every 6mo and top them off even though it still shows 4 bars. Only takes about 30min.
And as a bonus, it fits in one of the ESP underseat storage compartments.
Nice peace of mind.

 

This is the one I have. Not as "rugged" looking as some of the others but has helped me out several times. I got it from the recommendation of Wirecutter. ( https://www.nytimes.com/wirecutter/reviews/best-portable-jump-starter/ ). I turn to them for a lot of random stuff.

I just used it last week to jump my boss's car after having the unit sit charged in my truck for a full summer unused in the Florida heat.

 

Noco is among the best and most reliable.