Presenting the inside of Xiaomi 5200 mAh power bank!
P.S. I tried Snapseed for photo editing and it's really nice ☺

It's so annoying that the case is so big although the inside is so small D:

Snapseed is awesome!

Cool like it.

Next : Your laptop.😆

Most powerbanks and laptop batteries are just a bunch of 18650 lithium-ion batteries connected in some combination of series and parallel to get the desired voltage/capacity.

Give me your recommendations for your best Portable power banks. I'd like to cut through the fluff and find the reliable brands that might also be cheaper than the big names like Anker, etc.

I’ve gone through a few power banks. For example, INIU has mixed opinions online, so it’s worth checking INIU customer service https://pissedconsumer.com/company/... to get a balanced perspective before buying. Every brand has pros and cons, but in my case, INIU has been reliable without the hefty price tag.