> most people I know are already doing this, they're just doing it with a big lithium pouch cell coupled with a BMS/charge controller called a "battery bank"
Precisely. That means you can "not think about it" 4x as much as without it. One of those with USB-C in and a solar charger has gotten us by off grid for years, as well as perfect for long haul travel. No five minutes replaceable mucking about needed.
It's one thing, not a bag of 10, it packs slim, won't slow you down on an all-day all-night "Midnight Madness" scavenger hunt in NYC, and won't get you pulled out of line at the aeroport.
I wouldn't want to backpack with it to be honest. In my car? Sure, why not have a cooler sized battery with some solar panels, perfect solution really.
Also never had trouble flying with batteries. They're always in a ziplock and tossed into a bin, then back into my carryon. You can't check anything with a lithium battery, or, you're not supposed to at least.
False, most people I know are already doing this, they're just doing it with a big lithium pouch cell coupled with a BMS/charge controller called a "battery bank"
>Gotta love those after-market or counterfeit high density inflammable energy packs crammed against your body or the bagful of 9 spares left in your car...
Never had one pop, never left anything lithium powered in a car. A black car on a very hot day in a very hot region can reach ~160f, which is hotter than the recommended storage temp of lithium batteries. Most places with a non-black car won't get hot enough to be a problem. Lithium batteries are fine to store up to ~140F. Do understand that the air in your car being 160f doesn't mean your batteries are, just that they will be eventually. How long is eventually? Ultra-situational. Put your batteries in a cooler, you're probably good forever. Put them loose on the dashboard, probably not good for very long. Same thing goes for your phone, or anything else with a lithium battery. They're not the boogyman, they're not magic, they're subject to the laws of thermodynamics just like everything else.
The reason for caution really is that you don't know the condition of your batteries. They could have been damaged but still function just fine until you put them into some marginal condition and then they're very not fine very quickly.
That's not specific to the batteries I carry in my backpack, that's the battery in your iphone too, and a quick google for "iphone battery fire" is proof of that enough.
That said, if your iphone sets your pants on fire, what're you realistically going to do? Sue apple? You know, the multibillion dollar a year company with so many lawyers that they have them setup in a huge building all their own? Good luck, you have exactly the same amount of recourse I do, ie, none. You also probably have auto insurance, and renters/homeowners insurance, so, it burning down your car/house/etc is well covered at least.
>effectively two day battery life if you are conscious
What people actually don't like doing is being forced to be 'conscious' of their devices. They don't really even like having to charge their devices. Throw a small standby battery in an iphone, have it pop the back off, swap in an iBattery that lives in your iBattery dock (which is also insulated and keeps your iBatteries charged up), and you're off to the races. Apple could make this a really good system.
They won't, because they exist to be as anti-consumer as possible while not pissing them off so much that they look elsewhere because that's what is profitable.