The Power Bar from Jackery is a legit mega power source for your laptop. When you can’t plug in to charge, the Power Bar will give you 20,800 mAh at 85W, which is probably enough to charge your laptop from zero to full unless it’s a monster. Cell phone? Please – it’ll charge up to 10x. It’s safely designed, has a USB C and three 5V/2.4A USB outputs. If you need a ton of power where there are no plugs, you need the Power Bar from Jackery for $150.