Lately I've been trying to stay light. I have several Goal Zero products and they're good but I mostly use them when I'm near my truck. They're almost never the lightest option other times.
This is what I use lately. I bought three. They have two features that are important to me. First, they automatically turn on. Not all chargers do that and I like being able to quickly plug in without having to take the charger out and press a button. This way I leave the charger in my pack with a cable plugged in and handy and I'm good to go.
Second, they charge my phone to 80% in about 30 minutes. There are faster chargers out there now, just look for "Power Delivery (PD)". Either way, a fast charger is really nice to have. I can plug my phone in while eating lunch and I'm good to go the rest of the day.
Each one will charge my phone about 4-5x depending on how dead I let it get. Make sure you go into airplane mode every chance you get, that saves a ton of battery power. I usually find I only need one charge a day - I'm not playing video games out there, just tracking my route and taking the occasional photo. Since I have three of them that means I can take only the weight I really need. That's the problem with big chargers. On small trips they're overkill. I bring one charger for every 3ish days I plan to be out, and I'm good to go.
I don't mess around with solar. They're a nice thought but they just don't put out enough power to be useful, especially if you're on the move a lot. I can bring 2 more charger packs for the weight of one panel big enough to actually do something useful. Maybe for a multi-month through hike of the AT they're good. But not for hunting.
