Portable power bank for cell phone

I think Anker is the BEST.

See https://community.ricksteves.com/travel-forum/tech-tips/best-portable-charger

This is the Anker power bank I bought on Amazon before my trip to Germany. It’s wonderful. Reasonably priced and will charge my phone faster than the regular charger does. I can also get 2 to 3 full charges from the power bank before I have to recharge it. I love Anker
https://a.co/d/i9oHh8b

Thanks, Mardee. I like that it's so light too.

You're welcome! It packed very easily in my purse, too. If you have an iPhone, they don't include the connector for that (they do have a micro usb connector for charging) but I just used my own iPhone cable (minus the plug-in wall thingy).

I have always gotten Anker power banks and have always been very satisfied. Power banks really give me a sense of security that I won't run out of battery just as I have seen the perfect photo to take with my cell phone.

Anker is a great brand for power banks. I just ordered an Iniu power bank from Amazon based on the high ratings and better pricing.

Pay attention to the input and output rates of the power bank. This has a major impact on how long it takes for the power bank to charge itself up and how long for the power bank to charge up another device. The newer phones have the ability to take advantage of the latest rapid charging technologies, called PD or QC. Things to look for include the USB-C connector which permits both input (charging in) and output (charging out). Certain affordable Anker banks only permit USB-C input, but not output. Also look for 3A (or 20+ watt) charging which is much faster than the older 2.1-2.4A charging. If you have a newer phone, it would be a shame to cripple it with a slow charging power bank.

Weight is directly related to capacity. A 10,000 mAh bank is going to weigh about the same no matter which brand you buy. If you are bragging that your particular bank is very lightweight or weighs half as much compared to others, it just means that you have a lower capacity battery. By the same token a high capacity battery can weigh more than a pound.

As noted, you cannot check in a power bank on a plane. You must carry it with you on the plane. And the maximum number of power banks that you can carry is two with a capacity of 100 watt-hours. You can get special permission to carry a power bank up to 160 watt-hr. I can't begin to explain what these numbers means or how they're calculated. Just understand that if you want to hit the max capacity limits, you will end up carrying carrying about 2 to 3 lb of batteries which is a lot! My new 10,000 mAH power bank is about 37 watt-hours and weighs about 7 oz. It should be able to charge up my smartphone two to three times before the bank requires recharging. Just FYI. Cheers