I've got Car Jump Battery Starter/Booster (30% OFF on prime day) for total $63CAD on amazon.ca
not sure if you have the same on amazon.com
Upgraded Car Jump Starter, GOOLOO 800A Peak 18000mAh (Up to 7.0L Gas or 5.5L Diesel Engine) Portable Auto Battery Booster Power Pack Phone Charger with Quick Charge 3.0, Built-in LED Light
https://www.amazon.ca/gp/product/B06...?ie=UTF8&psc=1
It's pretty powerful battery booster as I used my friend's on my car before. Also can be used as a simple charger for phone etc.