[Attention Surplus Disorder]

I think you have to narrow down the application (more specifically, the req’d wattage or amp-hours) fairly brutally.

The ideal thing that comes to mind would be a solar panel > charger type of affair with about the footprint of a laptop. If you are charging batts for very low power digital devices, that’s one thing. If you need to jump start a Cummins V-10 diesel that’s quite another. And of course, you have to ponder whether there will be sunshine wherever you’re going.

There are very clever fold-up solar chargers https://www.ecokarma.net/best-portable-solar-chargers-and-panels/ under $100 and sometimes $40. Those wouldn’t kill you cost wise if you tried them and they didn’t quite fit the bill.

[Steely Tom]

And of course, you have to ponder whether there will be sunshine wherever you’re going.

You thinking maybe Alberta's Child is headin' off to where the sun don't shine?