My family has had good luck with the Anker brand power banks. Someone gave me a solar rechargeable like the one Cheesy linked. It takes a long time to charge up using solar energy and I just don't know about the quality enough to use it as a primary in a remote area. Someone also gave me a rechargeable Ocoopa hand warmer that I used last hunting season that also doubles as a power bank.
Another thing I like is a single USB charging cable that will work with lightning, micro and USB type C devices. This allows me to recharge batteries with charging ports for my rechargeable flashlights. I hate traveling with multiple cables and adapters.
https://www.bestbuy.com/site/native...pe-c-cable-zebra/6394136.p?skuId=6394136
