We have chosen Anker battery packs;
Anker Battery Packs - Hiking;
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Successful Hikes somewhat happen with attention to pack weight ,,, at least that is a very important factor for us.
Anker come highly recommended ,,, from different sources, but definitely from the hiking communities. Why it was so difficult to get product specifications on Anker’s website I don’t know ,,, but it was not straight forward.
If you are wondering about the weights of those 2 type of Anker battery packs ,,, the above is accurate.
So far with my limited testing I’m generally impressed with these Anker packs. I really like the 20,000 mAh packs we picked out ( the other pack is a 10,000 mAh ).
Here is the 20 Ah “specs” written on the battery pack;
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So “numbers” are used to sell products & IMO to confuse buyers sometimes. This is my pet peeve with these kinds of products ,,,
I almost have to buy on faith or do massive amounts of internet sleuthing to understand what the thing can do because the performance specs are not necessarily well written on a spec sheet the way Victron does it

.
So What we really wanted to know was;
Weight
Energy storage
Speed of charging
Speed of discharging
(Basically how it will perform & how many times it will charge up our Trail Sat/Comm & iPhones)
Deciphering The Numbers
The 20,000 mAh; from the printing upon the battery 20,000 / 4 @ 14.4v = 72Wh
Ok @ Apple doesn’t provide, so Internet search says this;
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So iPhone 16 Pro; 3,582 mAh @ 3.89v = 14.25Wh
So roughly 72Wh / 14.25Wh = 5.05 iPhone charges ,,, roughly
How long do the 20s take to charge

;
60 minutes test ours went from 17% to 99%;
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The mental checking of the test

,,, there are a lot of numbers written in small print, however I believe the max charge is 65W.
99% less 17% is 82% & 72Wh @ 82% is 59Wh
of course 65W @ 1 hour is 65Wh.
So there is heat & I suppose the spec’d max @ 65W might not be linear ( even though Li battery ). Yadda Yadda Yadda ,,, I believe the 65W max spec, but assume the majority of the charge will average around 60W.
I always factor in “real world” vs factory “max” specs when considering electrical equipment ,,, or posted “miles per gallon” ,,, real world driving have hills etc”.
YMMV.
So - Hiking Solar Panels;
Our conclusion was they are heavy & limited for charging. Thus we opted for the Anker battery packs.