just stumbled on this today. I see chicken+egg problem. There is no a-priori reason why this specific make+model will be sufficient de-facto that it will get the universality of access to make it a confident resupply.
My portable power is primarily used for flying and biking with but also does camping with and my power source is universal electricity in civilsation but accept it needs about 8 hours to get back 12,000mah in my USB battery.
The commoditisation of this hydrogen synthesis and fuel cell is really recent and I expect like others say this will much improve over years and its "boys and toys" early adopters.
Searches indicate this has only been announced publically in the last month or so. I don't see it actually available to buy right now. Specs I can glean
Per Hydrogen "core" is 9000mah (given verbally in this video, can't see it in writing just yet)
The core weighs 96g.
The reactor to make power from the core weighs 146g
I don't see buying pricing in UK but Bob quotes
"Lastest update for UK stockists:
Due into UK shops mid to late November.
SRP of Reactor £135 which includes 2 Charged Cores
SRP Extra Cores £12.50
Recharge costs £4 per unit"
The obvious problem is until the infrastructure exists where you live and travel to recharge (or exchange for a recharged) the core back up with hydrogen its recharge whilst on the move is limited. So say you left house with 18,000mah and got back home then posted an echange for recharge for the next trip. I know that hydrogen can be made from water+electricity but until there are frequent such appliances or shops holding stock of charged cores, liberally around, this idea will have issues. Setting aside the replenishing issue, look at capacity/weight, you're carrying 9000mah for 242g, 18000mah for 338g, etc.
A good idea if someone was really into this idea is to buy a kit with a home based hydrogen maker to recharge the cores then you can have the number of cores for your trip.
Personally I'm still sticking with USB batteries as I can recharge from a near-universal mains power socket anywhere, I can carry 12000mah for $40 and 320g excluding recharger. I also am unclear that a hydrogen fuel core is allowed to fly with (just like say a Gas canister cannot be flown).
Still, I see the idea as one which will become increasingly viable in the future as 9000mah per additional 92g is excellent, and this is just first version, I'm sure later will be much better.
Found the original manufacture Brunton refined the produce from and their hydrogren making machine (add water+electricity)
I am optimistic solar will become increasingly viable. New spray-on materials are in the lab, new electronics can regulate the fluctuating power to not require an intermediate battery. I can see today's heavy crude backpacks with combined solar becoming more common and lighter and almost de-facto. For backpacking as you're moving around and so is the sun I think its only practical to have an all-round solar panel. Don't ask me for when, we were all due to be holidaying on the moon by now according to 1970s predictions.
look at that pack's weight 1Kg for only 16L. Dumb technology right now. Solar panel only will charge if pointed directly at sun. Can you imagine folks doing mountain hike horseshoe paths trekking west then north then back east? Spending the noon time with really short trekking poles walking facing the ground?
Mind's eye is these become part of the cloth, spray-on type. If you combined it with say an induction system simply placing gadget inside the backpack it is charged from any available sunlight.
I prefer it. I toured originally with a Raleight roadbike with replaced casette to get more low gears (steep hills, more touring weight), then got a Dawes Super Galaxy which was my tourer for ~20 years. I got a Brompton 10 years ago and it solved the problem of trains which were getting increasingly bike-unfriendly.
I had a bike vandalised on campsite once, and I had a mechanical failure one Scottish middle'o'nowhere tour where I couldn't really thumb my way to civilisation. So the Brompton being with me all the time and being able to find into any public transport or any car trunk, solves those problems. With the Schlumpf Mountain Drive I got low enough gears - I biked all the way up Kirkstone pass with no stopping and sat in saddle and just about 2 mins of pushing at the steepest bit near the top. Bike rides fine, the low-down luggage front+rear makes for an easy ride good handling. The camping gear weight and water up front makes handling better.
There are some negatives. The smaller wheels concentrate the heat more so for long descents in a couple of places I just stopped for a minute or so to take in a view and let the rim cool, did that half way down "The Struggle" to Ambleside. The brakes aren't the best but they were good enough I never lost control.
I think overall its the perfect answer to touring where you want/need maximum flexibility.
The Tarptent Notch and the Brompton are made for each other. The packed length of the tent fits in the front luggage bag widths. I found if I simply place the bike in the vestibule it was near to touching the fly so I pulled it out a few inches and put something underneath one side to lean up against the trekking pole and that worked brilliantly. I put my shoes, tied to the tent apex resting on the bagged bike which kept slugs away enough, and the other side I did the pulling out of the pole to widen the inner on that side (I'm left handed so bike on my right and porch for entry+cooking to my left with the internal space widened on the left). Really good, much better than the Laser Comp single porch where I had to move the bike around each time I wanted to get in/out or cook.
Glad the theory about mesh proved correct, none of my own breath condensation wetting my sleeping bag. The bike also benefitted from high fly, it had less condensation on it than my earlier tent.
If were concerned with security I could tie the bike to the trelling pole so bike nicking would cause tent collapse.
I've left that tent in UK, now back in USA I'm not sure what I'll do next UK trip but I think a hike+camp like I did last year. Means I got no USA tent any more.... might buying another Tarptent not sure if I can sell it in UK for cost of a new one I might that, I kept a MYOG Tyvek groundsheet under it.
Good weight vs battery choice you're made. You're correct, this is a weight vs flexibility point of how you use your gadgets. Most of my phone use is as a device in my pocket or hand for regular living, and backpacking is specific use situation I wasn't going to worry about 100g more. My USB battery works on my phone and tablet and when going deep off-grid I carry a spare not-very-smart phone anyway (waterproof with torch). I use navigation from gadget as a backup to printed or hand-drawn maps.
Whilst not power related, my case is a rubber one with thick corners and a metal shell over its spine to reduce chance of damage from dropping. Any case adds its kinetic energy to the impact to the phone so I was going for min added weight max protection.
My backpack (Golite Jam) the phone fits in the hipbelt pocket and I recharge connecting external battery in the tent. This last one I was bike-camping and phone in top of front pannier.
All these options much better than Solar IMHO as actual stored power is there whilst the sun isn't.