This tool is so small you can put it in your glove compartment. I bought one of these for my kids to keep in their car so they never have to worry about a dead battery.
I’ve been using one of these portable jumpers in my shop for a year now and I’m totally amazed at how many jump starts it will do before needing a recharge. Plus, you can use it to power all your computer gadgets too. Worth every stinking penny!