Re falcon5000

In your photos I was interested in the combined 12V cigarette adapter/step down switching voltage regulator. It looks like it can adjusted to be set to various output voltages. Do you have any details as I have a La Crosse Technology BC900 AA charger which requires 3V DC and want to use it with my Sunlinq folding solar panel? I'm sticking with the normal Steripen/nalgene bottle filter setup which uses Eneloop AA cells for the moment.

It is not as compact as your setup but I find the rechargeable Lithium CR123Rs seem to self discharge quite quickly and cannot be relied on just when they are needed without first topping them up.

24 watts of portable cooling breeze - neat.