Why your outdoorsy friend suddenly has a gummy bear power bank

This is a very poorly researched article. A few things worth considering:

- 20,000 mAh is the rated capacity. Anyone who has tested 18650 batteries (which are the cells typically used in these battery packs) knows the rated capacity != tested capacity.

- Watthours is more important than amp hours

- Tested watt hours as typical loads is more important than amp hours

- It's very normal to see tested capacity to be roughly 70~80% of rated capacity.

- This commenter said they got "At 18W average, I pulled out 55.4Wh" on the Haribo [0]

- The generally considered "gold standard" for ultra light batteries in this range is the Nitecore NB20000 Gen 3, which regularly tests around 56 Wh.

So yes the conclusion is correct - you get roughly the same amount of capacity for a typical load (18W phone) for a cheaper price and slightly less weight. Very curious what battery cells the Haribo uses.

[0] - https://old.reddit.com/r/Ultralight/comments/1li5rxw/20000ma...

I don't think this power bank uses 18650. You could fit 3 18650 in it, but the highest capacity 18650 out there is less than 15Wh and this advertises 77Wh. Even the tested capacity of 55Wh is higher than the before-loss 18650 capacity you could fit in it.

> This is a very poorly researched article

So, yeah, pot, kettle, all that.

I think you're right, however, 18650 batteries do carry, on average, more energy density per volume and weight.

> but the highest capacity 18650 out there is less than 15Wh and this advertises 77Wh.

10x 2000 mAh 18650 batteries in parallel gives you 20 Ah @ 3.7V.

> So, yeah, pot, kettle, all that.

Totally unnecessary comment but thanks.