Bought a Fuel Rod on my trip to
Disneyland in the spring. Price was hard to swallow on first impulse purchase, but my phone was close to dying, so I knuckled up and did it, hoping it would prove worthwhile. It did, and I didn't regret it once.
The appeal, in my experience, isn't the capacity of 1 fuel rod. That's a poor way to look at it. The appeal is the ability to get infinite new fuel rods throughout the day, thus granting you infinite charge capacity. No, one rod could never top my phone back off to a full charge, but having them throughout the day kept my phone steady at a medium charge all day long. 2 phones actually, I alternated 1 rod between them. Had I dedicated it to one, I may have topped it off often. I'd get a rod, plug my phone in, shove both in my pocket (Which was easy with the tiny cord they give you. Very compact.)... when the rod went dry, I'd get a new one and repeat.
My problem with any charger I bought before Fuel Rod was that once the charger was dead, it was more dead weight to carry, and my phone was back to a slow burn until it died too. Fuel Rod doesn't have that problem. With Fuel Rod, you never find yourself without a charge option, and you need never carry the dead weight of a dead charger (or eventually a dead phone).
I Spent 4-5 Days in Disneyland. Looked the stations up on a map as I went (and they are on the map), but by the end of the trip I knew where all of them were, so had no trouble getting a new rod when I needed one. They were fairly evenly dispersed throughout both parks. Getting to one was never a hassle, and there was never a wait. Exchanging the rod takes literally seconds. At times I'd just pick up a new one because I was passing a station, even if the old one wasn't empty yet. So I was literally replenishing them faster than I was using them half the time. I never found getting a new one to be a hassle.
Honestly haven't tried it out in Disney World yet, just Disneyland, but I plan to bring the one I bought in California on my Florida trip in the fall and continue getting more value out of it on all future trips to come. Again, that's the appeal.
Thus far my only problem with it is the fact that Universal Studios doesn't have stations. They need to get on board this train.