About a year ago, I bought the Anker IQ It is 5000 mAH I believe.
I got it because of reviews on here and PCt-l.
I was shocked at how heavy it was so, didn't take it on my hike last summer (52 days in eastern Europe)
I took instead a Goal Zero Flip 10 that a hiker had left at my house by mistake. 2700 mAH
It is (guessing here) 1/4 of the weight of the Anker and it definitely gave my phone at least one full charge (don't let it go to zero so, really I felt I got about 1 1/2 charges out of it.
With the Anker, I get about the same (1 to 1 1/2 charges on my phone)
So, I don't understand the hype about Anker for hiking.
It seems very heavy (I'd guess 5 oz?) and doesn't seem to give much charging power.

Does anyone have experience with this Goal Zero Flip 10 power bank?
It is now 2 years old and I'm going on a hike in 2 weeks. (Tazmania), so, I'm wondering if I should rely on a 2 year old power bank.
It seems like it still works well.
I see they are about half the price of the Anker I bought.
Is Anker really all is cracked up to be?
I'm not impressed. anyway.