I have used a Powermonkey Explorer on my travels for the last 2 or 3 years and has been good. If you fancy one, try their own website and at checkout use the code TROOPS, you should dong it drops the price from about 65 quid to 35 quid.
Bargain. Loads of adapters for all sorts of things, plus a good storage capacity in internal battery.
But agree with Junkyard about windup vs solar (in the UK!).
When I do get called I can usually solve the problem over the phone, so dont need the car. I dont think the campsite is near a pub. So just need another way to charge the phone.
I will get some spare batteries and a windup radio thing.
It charges every kind of portable device you could own, charges itself up from AC or laptop and can charge your gadgets lots of times inbetween recharging it.
Such a cliche, but I don’t leave home without it anymore (well, if I’m away for more than a day anyway!).
I have one of these. It needs FULL BLISTERING sun for 8 hours plus to get any useful charge out of it whatsoever. I’ve often ended up just charging it off USB at the office and using it as a one-shot top up.
I have a power monkey which I keep with me in my commute bag at all times. Its very adaptable system, you can:
charge the power monkey from USB, or from a three pin with USB output, or the solar panel.
Charge the device from the power monkey or the three pin. Since multiple types of devices need only have the powertip changed you can support a lot more stuff with simple selection of power bits.
I also have a power chimp as another back up because that works on AA (or AAA with sleeves that come included) batteries. It gets a bit warm because of the simple electronics to get to 5v but its reliable and easy to use and to get AA batteries is generally quite easy.
7 dayshop are doing the chimp for £20 although I got mine for a bout £15 in one of their recent sales.
It seems like you guys are overcomplicating things. When on bike tour and stopping for shopping etc. the first thing I do is politely ask if they mind charging my phone. The charger plugs into wall sockets, which is dead handy, and weighs very little. I’ve spent weeks camping wild and bothying keeping my appliances topped up like this.